/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 22:58:46,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 22:58:46,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 22:58:46,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 22:58:46,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 22:58:46,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 22:58:46,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 22:58:46,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 22:58:46,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 22:58:46,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 22:58:46,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 22:58:46,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 22:58:46,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 22:58:46,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 22:58:46,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 22:58:46,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 22:58:46,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 22:58:46,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 22:58:46,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 22:58:46,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 22:58:46,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 22:58:46,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 22:58:46,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 22:58:46,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 22:58:46,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-10 22:58:46,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-10 22:58:46,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-10 22:58:46,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-10 22:58:46,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-10 22:58:46,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-10 22:58:46,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-10 22:58:46,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-10 22:58:46,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-10 22:58:46,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-10 22:58:46,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-10 22:58:46,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-10 22:58:46,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-10 22:58:46,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-10 22:58:46,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 22:58:46,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 22:58:46,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 22:58:46,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 22:58:46,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 22:58:46,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 22:58:46,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 22:58:46,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 22:58:46,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 22:58:46,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 22:58:46,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 22:58:46,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 22:58:46,735 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 22:58:46,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 22:58:46,735 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 22:58:46,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 22:58:46,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 22:58:46,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 22:58:46,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 22:58:46,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 22:58:46,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 22:58:46,736 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 22:58:46,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 22:58:46,736 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 22:58:46,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 22:58:46,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 22:58:46,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 22:58:46,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 22:58:46,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 22:58:46,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:58:46,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 22:58:46,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 22:58:46,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 22:58:46,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 22:58:46,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 22:58:46,740 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 22:58:46,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 22:58:46,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 22:58:46,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 22:58:46,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 22:58:47,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 22:58:47,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 22:58:47,003 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 22:58:47,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-02-10 22:58:47,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fff56b5/231aaf93f46e45f0b4593dae59e631ee/FLAGfe2927723 [2022-02-10 22:58:47,416 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 22:58:47,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-02-10 22:58:47,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fff56b5/231aaf93f46e45f0b4593dae59e631ee/FLAGfe2927723 [2022-02-10 22:58:47,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fff56b5/231aaf93f46e45f0b4593dae59e631ee [2022-02-10 22:58:47,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 22:58:47,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 22:58:47,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 22:58:47,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 22:58:47,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 22:58:47,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:58:47" (1/1) ... [2022-02-10 22:58:47,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547671b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:47, skipping insertion in model container [2022-02-10 22:58:47,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:58:47" (1/1) ... [2022-02-10 22:58:47,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 22:58:47,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 22:58:48,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-02-10 22:58:48,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:58:48,022 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 22:58:48,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-02-10 22:58:48,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:58:48,049 INFO L208 MainTranslator]: Completed translation [2022-02-10 22:58:48,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48 WrapperNode [2022-02-10 22:58:48,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 22:58:48,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 22:58:48,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 22:58:48,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 22:58:48,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,097 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-02-10 22:58:48,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 22:58:48,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 22:58:48,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 22:58:48,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 22:58:48,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 22:58:48,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 22:58:48,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 22:58:48,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 22:58:48,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (1/1) ... [2022-02-10 22:58:48,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:58:48,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:48,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 22:58:48,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 22:58:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 22:58:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 22:58:48,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 22:58:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 22:58:48,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 22:58:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 22:58:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 22:58:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 22:58:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 22:58:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 22:58:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 22:58:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 22:58:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 22:58:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 22:58:48,214 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 22:58:48,276 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 22:58:48,277 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 22:58:48,405 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 22:58:48,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 22:58:48,439 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 22:58:48,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:58:48 BoogieIcfgContainer [2022-02-10 22:58:48,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 22:58:48,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 22:58:48,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 22:58:48,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 22:58:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:58:47" (1/3) ... [2022-02-10 22:58:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3c7207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:58:48, skipping insertion in model container [2022-02-10 22:58:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:58:48" (2/3) ... [2022-02-10 22:58:48,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3c7207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:58:48, skipping insertion in model container [2022-02-10 22:58:48,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:58:48" (3/3) ... [2022-02-10 22:58:48,449 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-02-10 22:58:48,454 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 22:58:48,454 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 22:58:48,454 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 22:58:48,454 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 22:58:48,496 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,496 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,497 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,497 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,498 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,498 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,498 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,504 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,505 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,505 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,505 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,506 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,519 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,520 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,520 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,520 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,520 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,520 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,521 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,521 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,521 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,521 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,530 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,531 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,531 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,531 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,532 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,532 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,533 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,533 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,533 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,533 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,533 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,534 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,534 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,534 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,534 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,534 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,535 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,535 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,535 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,536 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,536 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,536 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,540 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,540 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,543 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,543 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,543 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,545 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,545 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,545 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,545 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,545 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:58:48,549 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 22:58:48,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 22:58:48,595 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 22:58:48,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 22:58:48,609 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 86 transitions, 188 flow [2022-02-10 22:58:48,683 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-10 22:58:48,708 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:48,709 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:48,710 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:58:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash 146847265, now seen corresponding path program 1 times [2022-02-10 22:58:48,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:48,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889056855] [2022-02-10 22:58:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:48,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:48,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:48,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889056855] [2022-02-10 22:58:48,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889056855] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:58:48,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:58:48,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 22:58:48,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93251030] [2022-02-10 22:58:48,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:58:48,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 22:58:48,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:49,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 22:58:49,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:58:49,029 INFO L87 Difference]: Start difference. First operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:49,082 INFO L93 Difference]: Finished difference Result 332 states and 782 transitions. [2022-02-10 22:58:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 22:58:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-02-10 22:58:49,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:49,102 INFO L225 Difference]: With dead ends: 332 [2022-02-10 22:58:49,102 INFO L226 Difference]: Without dead ends: 330 [2022-02-10 22:58:49,104 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:58:49,107 INFO L934 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:49,108 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:58:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-02-10 22:58:49,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-02-10 22:58:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.370820668693009) internal successors, (780), 329 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 780 transitions. [2022-02-10 22:58:49,183 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 780 transitions. Word has length 62 [2022-02-10 22:58:49,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:49,183 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 780 transitions. [2022-02-10 22:58:49,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 780 transitions. [2022-02-10 22:58:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-10 22:58:49,186 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:49,186 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:49,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 22:58:49,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:58:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:49,193 INFO L85 PathProgramCache]: Analyzing trace with hash -618423457, now seen corresponding path program 1 times [2022-02-10 22:58:49,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:49,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409113454] [2022-02-10 22:58:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:49,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:49,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409113454] [2022-02-10 22:58:49,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409113454] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:58:49,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:58:49,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:58:49,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352553661] [2022-02-10 22:58:49,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:58:49,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:58:49,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:49,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:58:49,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:58:49,495 INFO L87 Difference]: Start difference. First operand 330 states and 780 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:49,590 INFO L93 Difference]: Finished difference Result 450 states and 1092 transitions. [2022-02-10 22:58:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:58:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-02-10 22:58:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:49,596 INFO L225 Difference]: With dead ends: 450 [2022-02-10 22:58:49,596 INFO L226 Difference]: Without dead ends: 450 [2022-02-10 22:58:49,597 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:58:49,598 INFO L934 BasicCegarLoop]: 66 mSDtfsCounter, 108 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:49,598 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 135 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:58:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-02-10 22:58:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 360. [2022-02-10 22:58:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 2.3899721448467965) internal successors, (858), 359 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 858 transitions. [2022-02-10 22:58:49,624 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 858 transitions. Word has length 62 [2022-02-10 22:58:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:49,626 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 858 transitions. [2022-02-10 22:58:49,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 858 transitions. [2022-02-10 22:58:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-10 22:58:49,630 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:49,630 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:49,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 22:58:49,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:58:49,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:49,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1788424323, now seen corresponding path program 1 times [2022-02-10 22:58:49,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:49,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337203319] [2022-02-10 22:58:49,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:49,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:58:49,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:49,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337203319] [2022-02-10 22:58:49,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337203319] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:58:49,845 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:58:49,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:58:49,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704787083] [2022-02-10 22:58:49,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:58:49,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:58:49,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:58:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:58:49,846 INFO L87 Difference]: Start difference. First operand 360 states and 858 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:49,942 INFO L93 Difference]: Finished difference Result 446 states and 1090 transitions. [2022-02-10 22:58:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:58:49,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-02-10 22:58:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:49,946 INFO L225 Difference]: With dead ends: 446 [2022-02-10 22:58:49,946 INFO L226 Difference]: Without dead ends: 446 [2022-02-10 22:58:49,946 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:58:49,949 INFO L934 BasicCegarLoop]: 67 mSDtfsCounter, 83 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:49,950 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 157 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:58:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-02-10 22:58:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 403. [2022-02-10 22:58:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.4228855721393034) internal successors, (974), 402 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 974 transitions. [2022-02-10 22:58:49,962 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 974 transitions. Word has length 67 [2022-02-10 22:58:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:49,963 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 974 transitions. [2022-02-10 22:58:49,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:49,963 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 974 transitions. [2022-02-10 22:58:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:58:49,964 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:49,964 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:49,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 22:58:49,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:58:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash 679645881, now seen corresponding path program 1 times [2022-02-10 22:58:49,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:49,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494196568] [2022-02-10 22:58:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:49,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:50,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:50,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494196568] [2022-02-10 22:58:50,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494196568] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:50,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168580179] [2022-02-10 22:58:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:50,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:50,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:58:50,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 22:58:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:50,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:58:50,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:51,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:51,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168580179] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:51,768 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:51,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:58:51,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949290427] [2022-02-10 22:58:51,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:51,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:58:51,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:58:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:58:51,776 INFO L87 Difference]: Start difference. First operand 403 states and 974 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:54,327 INFO L93 Difference]: Finished difference Result 2098 states and 5141 transitions. [2022-02-10 22:58:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 22:58:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:58:54,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:54,337 INFO L225 Difference]: With dead ends: 2098 [2022-02-10 22:58:54,337 INFO L226 Difference]: Without dead ends: 1648 [2022-02-10 22:58:54,339 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1113, Invalid=6027, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 22:58:54,340 INFO L934 BasicCegarLoop]: 237 mSDtfsCounter, 1102 mSDsluCounter, 3465 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:54,341 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 3477 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:58:54,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-02-10 22:58:54,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 707. [2022-02-10 22:58:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 2.5651558073654392) internal successors, (1811), 706 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1811 transitions. [2022-02-10 22:58:54,377 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1811 transitions. Word has length 69 [2022-02-10 22:58:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:54,378 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 1811 transitions. [2022-02-10 22:58:54,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1811 transitions. [2022-02-10 22:58:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:58:54,380 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:54,380 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:54,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:54,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:54,600 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:58:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 302508043, now seen corresponding path program 2 times [2022-02-10 22:58:54,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:54,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622239402] [2022-02-10 22:58:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:54,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:54,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:54,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622239402] [2022-02-10 22:58:54,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622239402] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:54,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556217473] [2022-02-10 22:58:54,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:58:54,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:54,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:54,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:58:54,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 22:58:54,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:58:54,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:54,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:58:54,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:55,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:56,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556217473] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:56,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:56,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:58:56,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611788008] [2022-02-10 22:58:56,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:56,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:58:56,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:56,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:58:56,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:58:56,062 INFO L87 Difference]: Start difference. First operand 707 states and 1811 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:59,267 INFO L93 Difference]: Finished difference Result 2604 states and 6577 transitions. [2022-02-10 22:58:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 22:58:59,267 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:58:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:59,281 INFO L225 Difference]: With dead ends: 2604 [2022-02-10 22:58:59,281 INFO L226 Difference]: Without dead ends: 2451 [2022-02-10 22:58:59,285 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3418 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1784, Invalid=8116, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 22:58:59,286 INFO L934 BasicCegarLoop]: 202 mSDtfsCounter, 1577 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:59,286 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 3077 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:58:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2022-02-10 22:58:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 867. [2022-02-10 22:58:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6963048498845263) internal successors, (2335), 866 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2335 transitions. [2022-02-10 22:58:59,322 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2335 transitions. Word has length 69 [2022-02-10 22:58:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:59,323 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2335 transitions. [2022-02-10 22:58:59,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2335 transitions. [2022-02-10 22:58:59,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:58:59,327 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:59,327 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:59,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:59,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:59,547 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:58:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash -371365213, now seen corresponding path program 3 times [2022-02-10 22:58:59,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:59,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704820029] [2022-02-10 22:58:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:59,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:59,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704820029] [2022-02-10 22:58:59,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704820029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:59,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622439690] [2022-02-10 22:58:59,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:58:59,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:59,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:59,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:58:59,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 22:58:59,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:58:59,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:59,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:58:59,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:00,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:00,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622439690] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:00,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:00,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:59:00,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928523430] [2022-02-10 22:59:00,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:00,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:59:00,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:00,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:59:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:00,869 INFO L87 Difference]: Start difference. First operand 867 states and 2335 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:04,496 INFO L93 Difference]: Finished difference Result 2667 states and 6760 transitions. [2022-02-10 22:59:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-10 22:59:04,496 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:04,512 INFO L225 Difference]: With dead ends: 2667 [2022-02-10 22:59:04,512 INFO L226 Difference]: Without dead ends: 2439 [2022-02-10 22:59:04,516 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2254, Invalid=11318, Unknown=0, NotChecked=0, Total=13572 [2022-02-10 22:59:04,517 INFO L934 BasicCegarLoop]: 221 mSDtfsCounter, 1710 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:04,519 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 3098 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 22:59:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2022-02-10 22:59:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 843. [2022-02-10 22:59:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.666270783847981) internal successors, (2245), 842 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2245 transitions. [2022-02-10 22:59:04,559 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2245 transitions. Word has length 69 [2022-02-10 22:59:04,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:04,561 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2245 transitions. [2022-02-10 22:59:04,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2245 transitions. [2022-02-10 22:59:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:04,563 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:04,563 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:04,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:04,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:04,786 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:04,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1442639007, now seen corresponding path program 4 times [2022-02-10 22:59:04,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:04,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111923597] [2022-02-10 22:59:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:04,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:05,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:05,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111923597] [2022-02-10 22:59:05,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111923597] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:05,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576003379] [2022-02-10 22:59:05,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:59:05,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:05,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:05,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:05,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 22:59:05,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:59:05,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:05,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:05,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:05,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:05,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576003379] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:05,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:05,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:59:05,962 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197219064] [2022-02-10 22:59:05,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:05,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:59:05,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:59:05,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:05,963 INFO L87 Difference]: Start difference. First operand 843 states and 2245 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:08,514 INFO L93 Difference]: Finished difference Result 2368 states and 5958 transitions. [2022-02-10 22:59:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 22:59:08,515 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:08,524 INFO L225 Difference]: With dead ends: 2368 [2022-02-10 22:59:08,525 INFO L226 Difference]: Without dead ends: 2146 [2022-02-10 22:59:08,528 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3455 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1497, Invalid=9009, Unknown=0, NotChecked=0, Total=10506 [2022-02-10 22:59:08,528 INFO L934 BasicCegarLoop]: 233 mSDtfsCounter, 1258 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:08,528 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 3133 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:59:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-02-10 22:59:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 843. [2022-02-10 22:59:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.652019002375297) internal successors, (2233), 842 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2233 transitions. [2022-02-10 22:59:08,584 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2233 transitions. Word has length 69 [2022-02-10 22:59:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:08,585 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2233 transitions. [2022-02-10 22:59:08,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2233 transitions. [2022-02-10 22:59:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:08,588 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:08,588 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:08,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:08,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:08,796 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash -281754549, now seen corresponding path program 5 times [2022-02-10 22:59:08,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:08,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023936447] [2022-02-10 22:59:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:09,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:09,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023936447] [2022-02-10 22:59:09,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023936447] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:09,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121351170] [2022-02-10 22:59:09,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:59:09,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:09,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:09,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:09,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 22:59:09,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:59:09,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:09,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:09,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:09,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:10,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121351170] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:10,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:10,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:59:10,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262749179] [2022-02-10 22:59:10,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:10,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:59:10,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:59:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:10,049 INFO L87 Difference]: Start difference. First operand 843 states and 2233 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:12,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:12,269 INFO L93 Difference]: Finished difference Result 2392 states and 6232 transitions. [2022-02-10 22:59:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 22:59:12,270 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:12,279 INFO L225 Difference]: With dead ends: 2392 [2022-02-10 22:59:12,280 INFO L226 Difference]: Without dead ends: 2290 [2022-02-10 22:59:12,281 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1351, Invalid=6305, Unknown=0, NotChecked=0, Total=7656 [2022-02-10 22:59:12,282 INFO L934 BasicCegarLoop]: 179 mSDtfsCounter, 1116 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:12,282 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 2539 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:59:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-02-10 22:59:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 887. [2022-02-10 22:59:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 2.6930022573363432) internal successors, (2386), 886 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 2386 transitions. [2022-02-10 22:59:12,323 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 2386 transitions. Word has length 69 [2022-02-10 22:59:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:12,323 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 2386 transitions. [2022-02-10 22:59:12,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 2386 transitions. [2022-02-10 22:59:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:12,326 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:12,326 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:12,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:12,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:12,549 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:12,549 INFO L85 PathProgramCache]: Analyzing trace with hash -955627805, now seen corresponding path program 6 times [2022-02-10 22:59:12,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:12,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319796490] [2022-02-10 22:59:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:12,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:12,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:12,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319796490] [2022-02-10 22:59:12,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319796490] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:12,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853098021] [2022-02-10 22:59:12,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:59:12,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:12,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:12,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:12,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 22:59:12,817 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:59:12,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:12,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:12,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:13,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:13,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853098021] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:13,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:13,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:59:13,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777850529] [2022-02-10 22:59:13,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:13,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:59:13,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:59:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:13,728 INFO L87 Difference]: Start difference. First operand 887 states and 2386 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:16,104 INFO L93 Difference]: Finished difference Result 2108 states and 5506 transitions. [2022-02-10 22:59:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 22:59:16,105 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:16,116 INFO L225 Difference]: With dead ends: 2108 [2022-02-10 22:59:16,117 INFO L226 Difference]: Without dead ends: 1991 [2022-02-10 22:59:16,118 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1149, Invalid=5331, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 22:59:16,119 INFO L934 BasicCegarLoop]: 195 mSDtfsCounter, 710 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:16,119 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3819 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 22:59:16,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2022-02-10 22:59:16,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 875. [2022-02-10 22:59:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.6739130434782608) internal successors, (2337), 874 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2337 transitions. [2022-02-10 22:59:16,151 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2337 transitions. Word has length 69 [2022-02-10 22:59:16,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:16,151 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2337 transitions. [2022-02-10 22:59:16,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2337 transitions. [2022-02-10 22:59:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:16,154 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:16,154 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:16,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:16,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:16,360 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1554749941, now seen corresponding path program 7 times [2022-02-10 22:59:16,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:16,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420719673] [2022-02-10 22:59:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:16,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:16,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:16,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420719673] [2022-02-10 22:59:16,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420719673] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:16,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666643611] [2022-02-10 22:59:16,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:59:16,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:16,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:16,608 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:16,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 22:59:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:16,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:16,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:17,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:17,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666643611] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:17,564 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:17,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:59:17,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164424278] [2022-02-10 22:59:17,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:17,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:59:17,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:59:17,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:17,565 INFO L87 Difference]: Start difference. First operand 875 states and 2337 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:19,308 INFO L93 Difference]: Finished difference Result 1938 states and 5172 transitions. [2022-02-10 22:59:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 22:59:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:19,317 INFO L225 Difference]: With dead ends: 1938 [2022-02-10 22:59:19,317 INFO L226 Difference]: Without dead ends: 1887 [2022-02-10 22:59:19,318 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=897, Invalid=4073, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 22:59:19,318 INFO L934 BasicCegarLoop]: 156 mSDtfsCounter, 622 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:19,318 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 2313 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:59:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2022-02-10 22:59:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 891. [2022-02-10 22:59:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.6932584269662923) internal successors, (2397), 890 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2397 transitions. [2022-02-10 22:59:19,346 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2397 transitions. Word has length 69 [2022-02-10 22:59:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:19,346 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 2397 transitions. [2022-02-10 22:59:19,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2397 transitions. [2022-02-10 22:59:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:19,349 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:19,349 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:19,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:19,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:19,572 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash 880876685, now seen corresponding path program 8 times [2022-02-10 22:59:19,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:19,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920692128] [2022-02-10 22:59:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:19,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:19,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:19,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920692128] [2022-02-10 22:59:19,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920692128] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:19,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686846934] [2022-02-10 22:59:19,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:59:19,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:19,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:19,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 22:59:19,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:59:19,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:19,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:19,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:20,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:20,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686846934] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:20,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:20,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:59:20,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681708676] [2022-02-10 22:59:20,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:20,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:59:20,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:20,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:59:20,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:20,755 INFO L87 Difference]: Start difference. First operand 891 states and 2397 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:22,192 INFO L93 Difference]: Finished difference Result 1788 states and 4789 transitions. [2022-02-10 22:59:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 22:59:22,192 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:22,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:22,200 INFO L225 Difference]: With dead ends: 1788 [2022-02-10 22:59:22,200 INFO L226 Difference]: Without dead ends: 1722 [2022-02-10 22:59:22,201 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=839, Invalid=3853, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 22:59:22,203 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 709 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:22,203 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1962 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:59:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-02-10 22:59:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 871. [2022-02-10 22:59:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 2.6735632183908047) internal successors, (2326), 870 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2326 transitions. [2022-02-10 22:59:22,235 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2326 transitions. Word has length 69 [2022-02-10 22:59:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:22,235 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 2326 transitions. [2022-02-10 22:59:22,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2326 transitions. [2022-02-10 22:59:22,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:22,238 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:22,238 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:22,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-02-10 22:59:22,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-10 22:59:22,451 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1872132149, now seen corresponding path program 9 times [2022-02-10 22:59:22,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:22,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507586212] [2022-02-10 22:59:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:22,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:22,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:22,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507586212] [2022-02-10 22:59:22,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507586212] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:22,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953230359] [2022-02-10 22:59:22,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:59:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:22,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:22,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 22:59:22,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:59:22,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:22,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:22,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:23,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:23,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953230359] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:23,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:23,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:59:23,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046197495] [2022-02-10 22:59:23,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:23,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:59:23,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:59:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:23,598 INFO L87 Difference]: Start difference. First operand 871 states and 2326 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:25,944 INFO L93 Difference]: Finished difference Result 2062 states and 5485 transitions. [2022-02-10 22:59:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 22:59:25,944 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:25,951 INFO L225 Difference]: With dead ends: 2062 [2022-02-10 22:59:25,951 INFO L226 Difference]: Without dead ends: 2011 [2022-02-10 22:59:25,952 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1206, Invalid=4800, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 22:59:25,952 INFO L934 BasicCegarLoop]: 163 mSDtfsCounter, 780 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:25,953 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 2459 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:59:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-02-10 22:59:25,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 887. [2022-02-10 22:59:25,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 2.6975169300225734) internal successors, (2390), 886 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 2390 transitions. [2022-02-10 22:59:25,981 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 2390 transitions. Word has length 69 [2022-02-10 22:59:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:25,981 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 2390 transitions. [2022-02-10 22:59:25,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:25,982 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 2390 transitions. [2022-02-10 22:59:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:25,984 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:25,984 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:26,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:26,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:26,197 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:26,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1198258893, now seen corresponding path program 10 times [2022-02-10 22:59:26,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:26,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123549628] [2022-02-10 22:59:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:26,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:26,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:26,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123549628] [2022-02-10 22:59:26,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123549628] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:26,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248645101] [2022-02-10 22:59:26,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:59:26,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:26,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:26,422 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:26,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 22:59:26,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:59:26,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:26,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:26,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:26,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:27,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248645101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:27,422 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:27,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-10 22:59:27,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392710600] [2022-02-10 22:59:27,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:27,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:59:27,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:27,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:59:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:27,423 INFO L87 Difference]: Start difference. First operand 887 states and 2390 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:28,875 INFO L93 Difference]: Finished difference Result 1772 states and 4693 transitions. [2022-02-10 22:59:28,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 22:59:28,876 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:28,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:28,880 INFO L225 Difference]: With dead ends: 1772 [2022-02-10 22:59:28,880 INFO L226 Difference]: Without dead ends: 1706 [2022-02-10 22:59:28,881 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=795, Invalid=3111, Unknown=0, NotChecked=0, Total=3906 [2022-02-10 22:59:28,882 INFO L934 BasicCegarLoop]: 181 mSDtfsCounter, 625 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:28,883 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2327 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:59:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2022-02-10 22:59:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 867. [2022-02-10 22:59:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6732101616628174) internal successors, (2315), 866 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:28,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2315 transitions. [2022-02-10 22:59:28,905 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2315 transitions. Word has length 69 [2022-02-10 22:59:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:28,905 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2315 transitions. [2022-02-10 22:59:28,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2315 transitions. [2022-02-10 22:59:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:28,908 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:28,908 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:28,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:29,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-10 22:59:29,133 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:29,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:29,134 INFO L85 PathProgramCache]: Analyzing trace with hash 48795301, now seen corresponding path program 11 times [2022-02-10 22:59:29,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:29,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871978950] [2022-02-10 22:59:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:29,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:29,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:29,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871978950] [2022-02-10 22:59:29,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871978950] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:29,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632339282] [2022-02-10 22:59:29,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:59:29,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:29,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:29,177 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:29,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 22:59:29,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:59:29,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:29,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 22:59:29,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:29,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:29,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632339282] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:29,556 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:29,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-10 22:59:29,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050424410] [2022-02-10 22:59:29,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:29,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:59:29,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:29,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:59:29,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:59:29,557 INFO L87 Difference]: Start difference. First operand 867 states and 2315 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:29,591 INFO L93 Difference]: Finished difference Result 890 states and 2337 transitions. [2022-02-10 22:59:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:59:29,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:29,600 INFO L225 Difference]: With dead ends: 890 [2022-02-10 22:59:29,600 INFO L226 Difference]: Without dead ends: 890 [2022-02-10 22:59:29,600 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:59:29,601 INFO L934 BasicCegarLoop]: 76 mSDtfsCounter, 25 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:29,601 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 258 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:59:29,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-02-10 22:59:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 812. [2022-02-10 22:59:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 2.62268803945746) internal successors, (2127), 811 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2127 transitions. [2022-02-10 22:59:29,617 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2127 transitions. Word has length 69 [2022-02-10 22:59:29,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:29,617 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 2127 transitions. [2022-02-10 22:59:29,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2127 transitions. [2022-02-10 22:59:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:29,622 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:29,622 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:29,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:29,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 22:59:29,835 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:29,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash -908930907, now seen corresponding path program 12 times [2022-02-10 22:59:29,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:29,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80549959] [2022-02-10 22:59:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:29,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:30,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:30,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80549959] [2022-02-10 22:59:30,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80549959] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:30,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113367057] [2022-02-10 22:59:30,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:59:30,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:30,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:30,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:30,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 22:59:30,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:59:30,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:30,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 22:59:30,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:30,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:31,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113367057] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:31,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:31,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 38 [2022-02-10 22:59:31,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188282054] [2022-02-10 22:59:31,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:31,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 22:59:31,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:31,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 22:59:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:59:31,594 INFO L87 Difference]: Start difference. First operand 812 states and 2127 transitions. Second operand has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:34,666 INFO L93 Difference]: Finished difference Result 2429 states and 6136 transitions. [2022-02-10 22:59:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 22:59:34,667 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:34,672 INFO L225 Difference]: With dead ends: 2429 [2022-02-10 22:59:34,672 INFO L226 Difference]: Without dead ends: 2276 [2022-02-10 22:59:34,673 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1779, Invalid=7533, Unknown=0, NotChecked=0, Total=9312 [2022-02-10 22:59:34,674 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 1254 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:34,674 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 2496 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:59:34,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2022-02-10 22:59:34,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 924. [2022-02-10 22:59:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 2.6901408450704225) internal successors, (2483), 923 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2483 transitions. [2022-02-10 22:59:34,706 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2483 transitions. Word has length 69 [2022-02-10 22:59:34,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:34,707 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2483 transitions. [2022-02-10 22:59:34,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2483 transitions. [2022-02-10 22:59:34,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:34,709 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:34,710 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:34,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-10 22:59:34,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 22:59:34,931 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:34,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:34,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1582804163, now seen corresponding path program 13 times [2022-02-10 22:59:34,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:34,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073126101] [2022-02-10 22:59:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:34,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:35,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:35,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073126101] [2022-02-10 22:59:35,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073126101] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:35,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789537011] [2022-02-10 22:59:35,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:59:35,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:35,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:35,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:35,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 22:59:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:35,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:35,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:35,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:36,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789537011] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:36,252 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:36,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 22:59:36,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671708723] [2022-02-10 22:59:36,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:36,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 22:59:36,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 22:59:36,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:59:36,253 INFO L87 Difference]: Start difference. First operand 924 states and 2483 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:38,669 INFO L93 Difference]: Finished difference Result 2468 states and 6446 transitions. [2022-02-10 22:59:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 22:59:38,669 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:38,676 INFO L225 Difference]: With dead ends: 2468 [2022-02-10 22:59:38,676 INFO L226 Difference]: Without dead ends: 2240 [2022-02-10 22:59:38,677 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1135, Invalid=4871, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 22:59:38,677 INFO L934 BasicCegarLoop]: 164 mSDtfsCounter, 879 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:38,678 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 2454 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:59:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-02-10 22:59:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 1068. [2022-02-10 22:59:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 2.7544517338331773) internal successors, (2939), 1067 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 2939 transitions. [2022-02-10 22:59:38,709 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 2939 transitions. Word has length 69 [2022-02-10 22:59:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:38,709 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 2939 transitions. [2022-02-10 22:59:38,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 2939 transitions. [2022-02-10 22:59:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:38,712 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:38,712 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:38,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:38,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-10 22:59:38,927 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash -343361627, now seen corresponding path program 14 times [2022-02-10 22:59:38,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:38,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390934158] [2022-02-10 22:59:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:38,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:39,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:39,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390934158] [2022-02-10 22:59:39,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390934158] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:39,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71360335] [2022-02-10 22:59:39,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:59:39,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:39,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:39,131 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:39,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 22:59:39,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:59:39,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:39,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:39,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:39,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:40,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71360335] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:40,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:40,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 22:59:40,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632418257] [2022-02-10 22:59:40,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:40,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 22:59:40,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 22:59:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:59:40,107 INFO L87 Difference]: Start difference. First operand 1068 states and 2939 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:42,191 INFO L93 Difference]: Finished difference Result 2026 states and 5403 transitions. [2022-02-10 22:59:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 22:59:42,193 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:42,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:42,198 INFO L225 Difference]: With dead ends: 2026 [2022-02-10 22:59:42,198 INFO L226 Difference]: Without dead ends: 1924 [2022-02-10 22:59:42,199 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=854, Invalid=3838, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 22:59:42,199 INFO L934 BasicCegarLoop]: 130 mSDtfsCounter, 563 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:42,200 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 2080 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:59:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-02-10 22:59:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1064. [2022-02-10 22:59:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 2.750705550329257) internal successors, (2924), 1063 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 2924 transitions. [2022-02-10 22:59:42,227 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 2924 transitions. Word has length 69 [2022-02-10 22:59:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:42,227 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 2924 transitions. [2022-02-10 22:59:42,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 2924 transitions. [2022-02-10 22:59:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:42,230 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:42,230 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:42,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:42,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:42,446 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1942125631, now seen corresponding path program 15 times [2022-02-10 22:59:42,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:42,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972222336] [2022-02-10 22:59:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:42,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:42,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:42,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972222336] [2022-02-10 22:59:42,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972222336] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:42,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882371139] [2022-02-10 22:59:42,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:59:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:42,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:42,681 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:42,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 22:59:42,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:59:42,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:42,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:42,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:43,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:43,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882371139] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:43,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:43,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 22:59:43,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083288871] [2022-02-10 22:59:43,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:43,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 22:59:43,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:43,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 22:59:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:59:43,658 INFO L87 Difference]: Start difference. First operand 1064 states and 2924 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:44,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:44,369 INFO L93 Difference]: Finished difference Result 1621 states and 4399 transitions. [2022-02-10 22:59:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 22:59:44,370 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:44,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:44,374 INFO L225 Difference]: With dead ends: 1621 [2022-02-10 22:59:44,374 INFO L226 Difference]: Without dead ends: 1570 [2022-02-10 22:59:44,375 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1501, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:59:44,375 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 325 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:44,376 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1959 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:59:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-02-10 22:59:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1060. [2022-02-10 22:59:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 2.7469310670443816) internal successors, (2909), 1059 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 2909 transitions. [2022-02-10 22:59:44,403 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 2909 transitions. Word has length 69 [2022-02-10 22:59:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:44,403 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 2909 transitions. [2022-02-10 22:59:44,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2909 transitions. [2022-02-10 22:59:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:44,406 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:44,407 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:44,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:44,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 22:59:44,619 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2019223453, now seen corresponding path program 16 times [2022-02-10 22:59:44,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:44,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727841581] [2022-02-10 22:59:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:44,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:44,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:44,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727841581] [2022-02-10 22:59:44,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727841581] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:44,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937421905] [2022-02-10 22:59:44,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:59:44,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:44,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:44,837 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:44,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 22:59:44,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:59:44,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:44,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:44,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:45,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:45,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937421905] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:45,743 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:45,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 22:59:45,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923944930] [2022-02-10 22:59:45,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:45,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:59:45,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:59:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:59:45,745 INFO L87 Difference]: Start difference. First operand 1060 states and 2909 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:48,897 INFO L93 Difference]: Finished difference Result 2839 states and 7556 transitions. [2022-02-10 22:59:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 22:59:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:48,906 INFO L225 Difference]: With dead ends: 2839 [2022-02-10 22:59:48,907 INFO L226 Difference]: Without dead ends: 2692 [2022-02-10 22:59:48,908 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1699, Invalid=7231, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 22:59:48,908 INFO L934 BasicCegarLoop]: 172 mSDtfsCounter, 826 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:48,908 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2512 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:59:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-02-10 22:59:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1172. [2022-02-10 22:59:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.788215200683177) internal successors, (3265), 1171 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3265 transitions. [2022-02-10 22:59:48,944 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3265 transitions. Word has length 69 [2022-02-10 22:59:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:48,945 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3265 transitions. [2022-02-10 22:59:48,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3265 transitions. [2022-02-10 22:59:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:48,947 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:48,948 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:48,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:49,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:49,171 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash -205219233, now seen corresponding path program 17 times [2022-02-10 22:59:49,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:49,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198621580] [2022-02-10 22:59:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:49,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:49,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198621580] [2022-02-10 22:59:49,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198621580] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:49,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434465378] [2022-02-10 22:59:49,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:59:49,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:49,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:49,353 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:49,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 22:59:49,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:59:49,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:49,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:49,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:49,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:50,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434465378] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:50,195 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:50,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 22:59:50,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218447514] [2022-02-10 22:59:50,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:50,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:59:50,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:59:50,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:59:50,196 INFO L87 Difference]: Start difference. First operand 1172 states and 3265 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:51,886 INFO L93 Difference]: Finished difference Result 2465 states and 6507 transitions. [2022-02-10 22:59:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 22:59:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:51,890 INFO L225 Difference]: With dead ends: 2465 [2022-02-10 22:59:51,890 INFO L226 Difference]: Without dead ends: 2258 [2022-02-10 22:59:51,891 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=989, Invalid=5017, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 22:59:51,892 INFO L934 BasicCegarLoop]: 173 mSDtfsCounter, 583 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:51,892 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2671 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:59:51,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-02-10 22:59:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1172. [2022-02-10 22:59:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.774551665243382) internal successors, (3249), 1171 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3249 transitions. [2022-02-10 22:59:51,925 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3249 transitions. Word has length 69 [2022-02-10 22:59:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:51,925 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3249 transitions. [2022-02-10 22:59:51,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3249 transitions. [2022-02-10 22:59:51,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:51,934 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:51,934 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:51,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-02-10 22:59:52,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:52,148 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:52,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash 464520227, now seen corresponding path program 18 times [2022-02-10 22:59:52,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:52,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296037864] [2022-02-10 22:59:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:52,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:52,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296037864] [2022-02-10 22:59:52,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296037864] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:52,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372075515] [2022-02-10 22:59:52,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:59:52,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:52,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:52,360 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:52,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 22:59:52,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:59:52,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:52,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:52,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:52,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:53,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372075515] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:53,367 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:53,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 22:59:53,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179823325] [2022-02-10 22:59:53,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:53,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:59:53,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:59:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:59:53,369 INFO L87 Difference]: Start difference. First operand 1172 states and 3249 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:54,807 INFO L93 Difference]: Finished difference Result 2091 states and 5680 transitions. [2022-02-10 22:59:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 22:59:54,807 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:54,811 INFO L225 Difference]: With dead ends: 2091 [2022-02-10 22:59:54,811 INFO L226 Difference]: Without dead ends: 2025 [2022-02-10 22:59:54,812 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=729, Invalid=3303, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 22:59:54,813 INFO L934 BasicCegarLoop]: 165 mSDtfsCounter, 454 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:54,817 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 2351 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:59:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2022-02-10 22:59:54,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1180. [2022-02-10 22:59:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 2.7777777777777777) internal successors, (3275), 1179 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3275 transitions. [2022-02-10 22:59:54,846 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3275 transitions. Word has length 69 [2022-02-10 22:59:54,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:54,846 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 3275 transitions. [2022-02-10 22:59:54,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3275 transitions. [2022-02-10 22:59:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:54,849 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:54,849 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:54,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:55,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:55,074 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash -956181783, now seen corresponding path program 19 times [2022-02-10 22:59:55,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:55,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352201298] [2022-02-10 22:59:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:55,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:55,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352201298] [2022-02-10 22:59:55,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352201298] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:55,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516128256] [2022-02-10 22:59:55,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:59:55,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:55,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:55,271 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:55,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 22:59:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:55,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:55,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:55,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:56,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516128256] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:56,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:56,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 22:59:56,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031739438] [2022-02-10 22:59:56,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:56,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:59:56,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:56,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:59:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:59:56,202 INFO L87 Difference]: Start difference. First operand 1180 states and 3275 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:57,366 INFO L93 Difference]: Finished difference Result 2014 states and 5484 transitions. [2022-02-10 22:59:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 22:59:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 22:59:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:57,369 INFO L225 Difference]: With dead ends: 2014 [2022-02-10 22:59:57,369 INFO L226 Difference]: Without dead ends: 1963 [2022-02-10 22:59:57,369 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=560, Invalid=2746, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 22:59:57,370 INFO L934 BasicCegarLoop]: 146 mSDtfsCounter, 411 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:57,370 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 2125 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:59:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-02-10 22:59:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1176. [2022-02-10 22:59:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 2.774468085106383) internal successors, (3260), 1175 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 3260 transitions. [2022-02-10 22:59:57,392 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 3260 transitions. Word has length 69 [2022-02-10 22:59:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:57,392 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 3260 transitions. [2022-02-10 22:59:57,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 3260 transitions. [2022-02-10 22:59:57,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 22:59:57,394 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:57,395 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:57,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-10 22:59:57,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:57,607 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:57,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:57,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1313391633, now seen corresponding path program 20 times [2022-02-10 22:59:57,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:57,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088504946] [2022-02-10 22:59:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:57,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:57,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088504946] [2022-02-10 22:59:57,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088504946] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:57,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578730199] [2022-02-10 22:59:57,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:59:57,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:57,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:57,830 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:59:57,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 22:59:57,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:59:57,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:57,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:57,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:58,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:58,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578730199] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:58,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:58,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 22:59:58,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584898036] [2022-02-10 22:59:58,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:58,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:59:58,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:59:58,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:59:58,840 INFO L87 Difference]: Start difference. First operand 1176 states and 3260 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:00,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:00,138 INFO L93 Difference]: Finished difference Result 2014 states and 5492 transitions. [2022-02-10 23:00:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 23:00:00,139 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:00,142 INFO L225 Difference]: With dead ends: 2014 [2022-02-10 23:00:00,142 INFO L226 Difference]: Without dead ends: 1948 [2022-02-10 23:00:00,142 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=677, Invalid=2629, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 23:00:00,143 INFO L934 BasicCegarLoop]: 149 mSDtfsCounter, 420 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:00,143 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 2250 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-02-10 23:00:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1184. [2022-02-10 23:00:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 2.7810650887573964) internal successors, (3290), 1183 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3290 transitions. [2022-02-10 23:00:00,169 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3290 transitions. Word has length 69 [2022-02-10 23:00:00,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:00,169 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 3290 transitions. [2022-02-10 23:00:00,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:00,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3290 transitions. [2022-02-10 23:00:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:00,172 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:00,173 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:00,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-02-10 23:00:00,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-10 23:00:00,398 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1560873653, now seen corresponding path program 21 times [2022-02-10 23:00:00,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:00,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298317268] [2022-02-10 23:00:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:00,612 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:00,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298317268] [2022-02-10 23:00:00,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298317268] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:00,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973174307] [2022-02-10 23:00:00,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:00:00,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:00,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:00,614 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:00,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 23:00:00,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:00:00,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:00,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:00,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:01,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:01,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973174307] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:01,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:01,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:01,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847351106] [2022-02-10 23:00:01,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:01,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:01,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:01,580 INFO L87 Difference]: Start difference. First operand 1184 states and 3290 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:03,643 INFO L93 Difference]: Finished difference Result 2258 states and 6093 transitions. [2022-02-10 23:00:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 23:00:03,644 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:03,647 INFO L225 Difference]: With dead ends: 2258 [2022-02-10 23:00:03,647 INFO L226 Difference]: Without dead ends: 2156 [2022-02-10 23:00:03,648 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=876, Invalid=4094, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 23:00:03,648 INFO L934 BasicCegarLoop]: 153 mSDtfsCounter, 580 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:03,649 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 2424 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2022-02-10 23:00:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1176. [2022-02-10 23:00:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 2.777872340425532) internal successors, (3264), 1175 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 3264 transitions. [2022-02-10 23:00:03,670 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 3264 transitions. Word has length 69 [2022-02-10 23:00:03,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:03,670 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 3264 transitions. [2022-02-10 23:00:03,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:03,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 3264 transitions. [2022-02-10 23:00:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:03,672 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:03,672 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:03,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:03,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-10 23:00:03,896 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:03,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:03,896 INFO L85 PathProgramCache]: Analyzing trace with hash -448606385, now seen corresponding path program 22 times [2022-02-10 23:00:03,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:03,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777764267] [2022-02-10 23:00:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:03,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:04,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:04,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777764267] [2022-02-10 23:00:04,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777764267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:04,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054649466] [2022-02-10 23:00:04,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:00:04,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:04,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:04,090 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:04,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 23:00:04,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:00:04,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:04,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:04,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:04,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:04,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054649466] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:04,982 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:04,982 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:04,982 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834140097] [2022-02-10 23:00:04,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:04,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:04,982 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:04,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:04,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:04,983 INFO L87 Difference]: Start difference. First operand 1176 states and 3264 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:05,654 INFO L93 Difference]: Finished difference Result 1749 states and 4783 transitions. [2022-02-10 23:00:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 23:00:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:05,657 INFO L225 Difference]: With dead ends: 1749 [2022-02-10 23:00:05,657 INFO L226 Difference]: Without dead ends: 1698 [2022-02-10 23:00:05,657 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=419, Invalid=1651, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 23:00:05,658 INFO L934 BasicCegarLoop]: 133 mSDtfsCounter, 348 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:05,658 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1669 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:00:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-02-10 23:00:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1172. [2022-02-10 23:00:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.774551665243382) internal successors, (3249), 1171 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:05,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3249 transitions. [2022-02-10 23:00:05,675 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3249 transitions. Word has length 69 [2022-02-10 23:00:05,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:05,676 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3249 transitions. [2022-02-10 23:00:05,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3249 transitions. [2022-02-10 23:00:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:05,678 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:05,678 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:05,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-10 23:00:05,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:05,878 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1704619901, now seen corresponding path program 23 times [2022-02-10 23:00:05,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:05,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457631847] [2022-02-10 23:00:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:05,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:06,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:06,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457631847] [2022-02-10 23:00:06,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457631847] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:06,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133614170] [2022-02-10 23:00:06,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:00:06,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:06,112 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:06,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 23:00:06,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:00:06,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:06,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:06,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:06,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:06,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133614170] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:06,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:06,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:00:06,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719343278] [2022-02-10 23:00:06,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:06,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:06,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:07,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:07,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:07,000 INFO L87 Difference]: Start difference. First operand 1172 states and 3249 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:09,193 INFO L93 Difference]: Finished difference Result 2791 states and 7406 transitions. [2022-02-10 23:00:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 23:00:09,194 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:09,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:09,197 INFO L225 Difference]: With dead ends: 2791 [2022-02-10 23:00:09,197 INFO L226 Difference]: Without dead ends: 2512 [2022-02-10 23:00:09,198 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1200, Invalid=5442, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 23:00:09,198 INFO L934 BasicCegarLoop]: 171 mSDtfsCounter, 1028 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:09,199 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 2147 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2022-02-10 23:00:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1356. [2022-02-10 23:00:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 2.8243542435424356) internal successors, (3827), 1355 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3827 transitions. [2022-02-10 23:00:09,218 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3827 transitions. Word has length 69 [2022-02-10 23:00:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:09,218 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 3827 transitions. [2022-02-10 23:00:09,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3827 transitions. [2022-02-10 23:00:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:09,220 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:09,220 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:09,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-02-10 23:00:09,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:09,421 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:09,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1350904859, now seen corresponding path program 24 times [2022-02-10 23:00:09,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:09,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482407746] [2022-02-10 23:00:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:09,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:09,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:09,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482407746] [2022-02-10 23:00:09,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482407746] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:09,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646429306] [2022-02-10 23:00:09,654 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:00:09,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:09,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:09,655 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:09,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 23:00:09,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:00:09,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:09,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:09,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:10,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:10,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646429306] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:10,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:10,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:00:10,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29028033] [2022-02-10 23:00:10,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:10,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:10,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:10,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:10,617 INFO L87 Difference]: Start difference. First operand 1356 states and 3827 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:13,459 INFO L93 Difference]: Finished difference Result 3128 states and 8471 transitions. [2022-02-10 23:00:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 23:00:13,459 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:13,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:13,464 INFO L225 Difference]: With dead ends: 3128 [2022-02-10 23:00:13,464 INFO L226 Difference]: Without dead ends: 2975 [2022-02-10 23:00:13,464 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1264, Invalid=6926, Unknown=0, NotChecked=0, Total=8190 [2022-02-10 23:00:13,465 INFO L934 BasicCegarLoop]: 162 mSDtfsCounter, 816 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:13,465 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2627 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2022-02-10 23:00:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1572. [2022-02-10 23:00:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 2.872692552514322) internal successors, (4513), 1571 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 4513 transitions. [2022-02-10 23:00:13,491 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 4513 transitions. Word has length 69 [2022-02-10 23:00:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:13,491 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 4513 transitions. [2022-02-10 23:00:13,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 4513 transitions. [2022-02-10 23:00:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:13,495 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:13,495 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:13,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:13,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-10 23:00:13,701 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:13,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:13,701 INFO L85 PathProgramCache]: Analyzing trace with hash 934582399, now seen corresponding path program 25 times [2022-02-10 23:00:13,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:13,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910664184] [2022-02-10 23:00:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:13,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:13,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:13,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910664184] [2022-02-10 23:00:13,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910664184] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:13,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145089194] [2022-02-10 23:00:13,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:00:13,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:13,908 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:13,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 23:00:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:13,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:13,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:14,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:14,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145089194] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:14,880 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:14,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:00:14,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029117844] [2022-02-10 23:00:14,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:14,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:14,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:14,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:14,881 INFO L87 Difference]: Start difference. First operand 1572 states and 4513 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:15,587 INFO L93 Difference]: Finished difference Result 2317 states and 6471 transitions. [2022-02-10 23:00:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 23:00:15,588 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:15,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:15,591 INFO L225 Difference]: With dead ends: 2317 [2022-02-10 23:00:15,591 INFO L226 Difference]: Without dead ends: 2266 [2022-02-10 23:00:15,592 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=1664, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 23:00:15,592 INFO L934 BasicCegarLoop]: 140 mSDtfsCounter, 380 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:15,592 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1669 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:00:15,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2022-02-10 23:00:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1568. [2022-02-10 23:00:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 2.8704530950861518) internal successors, (4498), 1567 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 4498 transitions. [2022-02-10 23:00:15,618 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 4498 transitions. Word has length 69 [2022-02-10 23:00:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:15,618 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 4498 transitions. [2022-02-10 23:00:15,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 4498 transitions. [2022-02-10 23:00:15,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:15,621 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:15,621 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:15,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:15,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-10 23:00:15,846 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash 331809321, now seen corresponding path program 26 times [2022-02-10 23:00:15,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:15,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336476680] [2022-02-10 23:00:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:15,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:16,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:16,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336476680] [2022-02-10 23:00:16,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336476680] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:16,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125416112] [2022-02-10 23:00:16,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:00:16,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:16,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:16,049 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:16,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 23:00:16,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:00:16,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:16,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:16,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:16,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:17,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125416112] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:17,009 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:17,009 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:00:17,009 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968134914] [2022-02-10 23:00:17,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:17,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:17,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:17,010 INFO L87 Difference]: Start difference. First operand 1568 states and 4498 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:19,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:19,684 INFO L93 Difference]: Finished difference Result 3173 states and 8646 transitions. [2022-02-10 23:00:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 23:00:19,685 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:19,690 INFO L225 Difference]: With dead ends: 3173 [2022-02-10 23:00:19,690 INFO L226 Difference]: Without dead ends: 2882 [2022-02-10 23:00:19,691 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1228, Invalid=5744, Unknown=0, NotChecked=0, Total=6972 [2022-02-10 23:00:19,691 INFO L934 BasicCegarLoop]: 189 mSDtfsCounter, 803 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:19,691 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 2913 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-02-10 23:00:19,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1452. [2022-02-10 23:00:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 2.8442453480358374) internal successors, (4127), 1451 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4127 transitions. [2022-02-10 23:00:19,731 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4127 transitions. Word has length 69 [2022-02-10 23:00:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:19,731 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 4127 transitions. [2022-02-10 23:00:19,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4127 transitions. [2022-02-10 23:00:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:19,733 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:19,733 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:19,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:19,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 23:00:19,934 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash -104609969, now seen corresponding path program 27 times [2022-02-10 23:00:19,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:19,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334304077] [2022-02-10 23:00:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:19,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:20,145 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:20,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334304077] [2022-02-10 23:00:20,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334304077] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:20,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144062756] [2022-02-10 23:00:20,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:00:20,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:20,147 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:20,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 23:00:20,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:00:20,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:20,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:20,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:20,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:20,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144062756] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:20,966 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:20,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:20,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982553103] [2022-02-10 23:00:20,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:20,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:20,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:20,967 INFO L87 Difference]: Start difference. First operand 1452 states and 4127 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:23,796 INFO L93 Difference]: Finished difference Result 3152 states and 8503 transitions. [2022-02-10 23:00:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 23:00:23,796 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:23,801 INFO L225 Difference]: With dead ends: 3152 [2022-02-10 23:00:23,802 INFO L226 Difference]: Without dead ends: 2981 [2022-02-10 23:00:23,802 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3091 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1769, Invalid=7737, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 23:00:23,803 INFO L934 BasicCegarLoop]: 188 mSDtfsCounter, 1083 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:23,803 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 2541 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-02-10 23:00:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1524. [2022-02-10 23:00:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.866053841103086) internal successors, (4365), 1523 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4365 transitions. [2022-02-10 23:00:23,838 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4365 transitions. Word has length 69 [2022-02-10 23:00:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:23,838 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 4365 transitions. [2022-02-10 23:00:23,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4365 transitions. [2022-02-10 23:00:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:23,841 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:23,841 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:23,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:24,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:24,055 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:24,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1709394251, now seen corresponding path program 28 times [2022-02-10 23:00:24,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:24,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144955054] [2022-02-10 23:00:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:24,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:24,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:24,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144955054] [2022-02-10 23:00:24,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144955054] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:24,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166419938] [2022-02-10 23:00:24,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:00:24,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:24,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:24,250 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:24,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 23:00:24,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:00:24,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:24,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:24,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:24,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:25,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166419938] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:25,082 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:25,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:25,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315610549] [2022-02-10 23:00:25,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:25,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:25,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:25,083 INFO L87 Difference]: Start difference. First operand 1524 states and 4365 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:26,695 INFO L93 Difference]: Finished difference Result 2664 states and 7210 transitions. [2022-02-10 23:00:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 23:00:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:26,700 INFO L225 Difference]: With dead ends: 2664 [2022-02-10 23:00:26,700 INFO L226 Difference]: Without dead ends: 2457 [2022-02-10 23:00:26,700 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=970, Invalid=4882, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 23:00:26,701 INFO L934 BasicCegarLoop]: 161 mSDtfsCounter, 683 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:26,701 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2359 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2022-02-10 23:00:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1384. [2022-02-10 23:00:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 2.81706435285611) internal successors, (3896), 1383 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 3896 transitions. [2022-02-10 23:00:26,724 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 3896 transitions. Word has length 69 [2022-02-10 23:00:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:26,724 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 3896 transitions. [2022-02-10 23:00:26,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 3896 transitions. [2022-02-10 23:00:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:26,727 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:26,727 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:26,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-10 23:00:26,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:26,951 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:26,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:26,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1915833585, now seen corresponding path program 29 times [2022-02-10 23:00:26,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:26,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579112744] [2022-02-10 23:00:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:26,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:27,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:27,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579112744] [2022-02-10 23:00:27,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579112744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:27,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136022670] [2022-02-10 23:00:27,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:00:27,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:27,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:27,165 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:27,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 23:00:27,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:00:27,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:27,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:27,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:27,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:28,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136022670] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:28,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:28,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:28,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024304204] [2022-02-10 23:00:28,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:28,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:28,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:28,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:28,118 INFO L87 Difference]: Start difference. First operand 1384 states and 3896 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:31,402 INFO L93 Difference]: Finished difference Result 3219 states and 8750 transitions. [2022-02-10 23:00:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 23:00:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:31,408 INFO L225 Difference]: With dead ends: 3219 [2022-02-10 23:00:31,408 INFO L226 Difference]: Without dead ends: 3087 [2022-02-10 23:00:31,409 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3968 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1837, Invalid=9719, Unknown=0, NotChecked=0, Total=11556 [2022-02-10 23:00:31,410 INFO L934 BasicCegarLoop]: 197 mSDtfsCounter, 948 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:31,410 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2820 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2022-02-10 23:00:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 1488. [2022-02-10 23:00:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 2.828513786146604) internal successors, (4206), 1487 states have internal predecessors, (4206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4206 transitions. [2022-02-10 23:00:31,442 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4206 transitions. Word has length 69 [2022-02-10 23:00:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:31,442 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 4206 transitions. [2022-02-10 23:00:31,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4206 transitions. [2022-02-10 23:00:31,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:31,445 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:31,445 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:31,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:31,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:31,659 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:31,660 INFO L85 PathProgramCache]: Analyzing trace with hash 958431701, now seen corresponding path program 30 times [2022-02-10 23:00:31,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:31,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136391215] [2022-02-10 23:00:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:31,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:31,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:31,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136391215] [2022-02-10 23:00:31,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136391215] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:31,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549756954] [2022-02-10 23:00:31,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:00:31,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:31,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:31,848 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:31,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 23:00:31,908 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:00:31,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:31,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:31,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:32,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:32,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549756954] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:32,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:32,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:32,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642862468] [2022-02-10 23:00:32,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:32,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:32,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:32,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:32,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:32,713 INFO L87 Difference]: Start difference. First operand 1488 states and 4206 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:34,947 INFO L93 Difference]: Finished difference Result 3009 states and 8256 transitions. [2022-02-10 23:00:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 23:00:34,948 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:34,952 INFO L225 Difference]: With dead ends: 3009 [2022-02-10 23:00:34,952 INFO L226 Difference]: Without dead ends: 2907 [2022-02-10 23:00:34,953 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1195, Invalid=6637, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 23:00:34,953 INFO L934 BasicCegarLoop]: 170 mSDtfsCounter, 627 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:34,954 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 2403 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2022-02-10 23:00:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1504. [2022-02-10 23:00:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 2.8276779773785763) internal successors, (4250), 1503 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 4250 transitions. [2022-02-10 23:00:34,981 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 4250 transitions. Word has length 69 [2022-02-10 23:00:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:34,981 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 4250 transitions. [2022-02-10 23:00:34,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 4250 transitions. [2022-02-10 23:00:34,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:34,984 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:34,984 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:35,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:35,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-02-10 23:00:35,184 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:35,185 INFO L85 PathProgramCache]: Analyzing trace with hash 601221851, now seen corresponding path program 31 times [2022-02-10 23:00:35,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:35,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074169669] [2022-02-10 23:00:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:35,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:35,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:35,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074169669] [2022-02-10 23:00:35,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074169669] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:35,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656590298] [2022-02-10 23:00:35,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:00:35,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:35,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:35,394 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:35,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 23:00:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:35,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:35,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:35,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:36,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656590298] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:36,227 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:36,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:36,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666512689] [2022-02-10 23:00:36,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:36,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:36,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:36,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:36,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:36,228 INFO L87 Difference]: Start difference. First operand 1504 states and 4250 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:38,703 INFO L93 Difference]: Finished difference Result 3046 states and 8326 transitions. [2022-02-10 23:00:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 23:00:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:38,708 INFO L225 Difference]: With dead ends: 3046 [2022-02-10 23:00:38,708 INFO L226 Difference]: Without dead ends: 2914 [2022-02-10 23:00:38,709 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1245, Invalid=5895, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 23:00:38,709 INFO L934 BasicCegarLoop]: 180 mSDtfsCounter, 793 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:38,709 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2534 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2022-02-10 23:00:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1604. [2022-02-10 23:00:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 2.835308796007486) internal successors, (4545), 1603 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 4545 transitions. [2022-02-10 23:00:38,746 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 4545 transitions. Word has length 69 [2022-02-10 23:00:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:38,747 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 4545 transitions. [2022-02-10 23:00:38,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 4545 transitions. [2022-02-10 23:00:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:38,751 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:38,751 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:38,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:38,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:38,975 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash -819480159, now seen corresponding path program 32 times [2022-02-10 23:00:38,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:38,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119256581] [2022-02-10 23:00:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:38,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:39,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:39,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119256581] [2022-02-10 23:00:39,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119256581] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:39,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14521649] [2022-02-10 23:00:39,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:00:39,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:39,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:39,171 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:39,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 23:00:39,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:00:39,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:39,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:39,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:39,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:40,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14521649] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:40,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:40,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:40,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648770903] [2022-02-10 23:00:40,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:40,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:40,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:40,158 INFO L87 Difference]: Start difference. First operand 1604 states and 4545 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:43,674 INFO L93 Difference]: Finished difference Result 3721 states and 10256 transitions. [2022-02-10 23:00:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-10 23:00:43,674 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:43,680 INFO L225 Difference]: With dead ends: 3721 [2022-02-10 23:00:43,680 INFO L226 Difference]: Without dead ends: 3568 [2022-02-10 23:00:43,681 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1592, Invalid=9120, Unknown=0, NotChecked=0, Total=10712 [2022-02-10 23:00:43,681 INFO L934 BasicCegarLoop]: 179 mSDtfsCounter, 643 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:43,682 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 2574 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-02-10 23:00:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 1820. [2022-02-10 23:00:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1819 states have (on average 2.862561847168774) internal successors, (5207), 1819 states have internal predecessors, (5207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 5207 transitions. [2022-02-10 23:00:43,726 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 5207 transitions. Word has length 69 [2022-02-10 23:00:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:43,726 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 5207 transitions. [2022-02-10 23:00:43,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 5207 transitions. [2022-02-10 23:00:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:43,730 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:43,730 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:43,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:43,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:43,952 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1466007099, now seen corresponding path program 33 times [2022-02-10 23:00:43,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:43,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753232158] [2022-02-10 23:00:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:44,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:44,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753232158] [2022-02-10 23:00:44,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753232158] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:44,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775393395] [2022-02-10 23:00:44,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:00:44,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:44,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:44,175 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:44,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 23:00:44,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:00:44,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:44,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:44,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:44,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:45,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775393395] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:45,007 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:45,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:00:45,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817810420] [2022-02-10 23:00:45,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:45,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:00:45,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:45,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:00:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:00:45,008 INFO L87 Difference]: Start difference. First operand 1820 states and 5207 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:45,890 INFO L93 Difference]: Finished difference Result 2637 states and 7401 transitions. [2022-02-10 23:00:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 23:00:45,891 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:45,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:45,895 INFO L225 Difference]: With dead ends: 2637 [2022-02-10 23:00:45,895 INFO L226 Difference]: Without dead ends: 2586 [2022-02-10 23:00:45,896 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=550, Invalid=2312, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 23:00:45,896 INFO L934 BasicCegarLoop]: 139 mSDtfsCounter, 285 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:45,896 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2089 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:00:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2022-02-10 23:00:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 1816. [2022-02-10 23:00:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1815 states have (on average 2.860606060606061) internal successors, (5192), 1815 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 5192 transitions. [2022-02-10 23:00:45,923 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 5192 transitions. Word has length 69 [2022-02-10 23:00:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:45,923 INFO L470 AbstractCegarLoop]: Abstraction has 1816 states and 5192 transitions. [2022-02-10 23:00:45,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 5192 transitions. [2022-02-10 23:00:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:45,926 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:45,926 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:45,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:46,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-10 23:00:46,126 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:46,127 INFO L85 PathProgramCache]: Analyzing trace with hash 407050943, now seen corresponding path program 34 times [2022-02-10 23:00:46,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:46,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350582811] [2022-02-10 23:00:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:46,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:46,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350582811] [2022-02-10 23:00:46,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350582811] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:46,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820162412] [2022-02-10 23:00:46,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:00:46,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:46,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:46,331 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:46,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 23:00:46,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:00:46,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:46,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:46,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:46,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:47,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820162412] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:47,187 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:47,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:00:47,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730694650] [2022-02-10 23:00:47,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:47,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:47,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:47,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:47,188 INFO L87 Difference]: Start difference. First operand 1816 states and 5192 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:49,390 INFO L93 Difference]: Finished difference Result 3602 states and 9801 transitions. [2022-02-10 23:00:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 23:00:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:49,396 INFO L225 Difference]: With dead ends: 3602 [2022-02-10 23:00:49,396 INFO L226 Difference]: Without dead ends: 3398 [2022-02-10 23:00:49,397 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1217, Invalid=4945, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 23:00:49,397 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 948 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:49,398 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2317 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-02-10 23:00:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1932. [2022-02-10 23:00:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.8788192646297257) internal successors, (5559), 1931 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5559 transitions. [2022-02-10 23:00:49,446 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5559 transitions. Word has length 69 [2022-02-10 23:00:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:49,446 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5559 transitions. [2022-02-10 23:00:49,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5559 transitions. [2022-02-10 23:00:49,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:49,449 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:49,449 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:49,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:49,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-10 23:00:49,650 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:49,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:49,650 INFO L85 PathProgramCache]: Analyzing trace with hash -266822313, now seen corresponding path program 35 times [2022-02-10 23:00:49,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:49,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088178275] [2022-02-10 23:00:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:49,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:49,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:49,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088178275] [2022-02-10 23:00:49,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088178275] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:49,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199868530] [2022-02-10 23:00:49,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:00:49,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:49,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:49,843 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:49,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 23:00:49,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:00:49,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:49,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:49,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:50,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:50,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199868530] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:50,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:50,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:00:50,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783122080] [2022-02-10 23:00:50,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:50,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:50,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:50,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:50,780 INFO L87 Difference]: Start difference. First operand 1932 states and 5559 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:52,642 INFO L93 Difference]: Finished difference Result 3241 states and 8902 transitions. [2022-02-10 23:00:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 23:00:52,643 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:52,648 INFO L225 Difference]: With dead ends: 3241 [2022-02-10 23:00:52,648 INFO L226 Difference]: Without dead ends: 3013 [2022-02-10 23:00:52,648 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=851, Invalid=3571, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 23:00:52,649 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 734 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:52,649 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 2295 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2022-02-10 23:00:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 1908. [2022-02-10 23:00:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.859465128474043) internal successors, (5453), 1907 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5453 transitions. [2022-02-10 23:00:52,686 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5453 transitions. Word has length 69 [2022-02-10 23:00:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:52,687 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5453 transitions. [2022-02-10 23:00:52,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5453 transitions. [2022-02-10 23:00:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:52,689 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:52,689 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:52,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-10 23:00:52,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-10 23:00:52,890 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:52,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1230124231, now seen corresponding path program 36 times [2022-02-10 23:00:52,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:52,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483376297] [2022-02-10 23:00:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:53,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:53,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483376297] [2022-02-10 23:00:53,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483376297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:53,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129690076] [2022-02-10 23:00:53,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:00:53,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:53,080 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:53,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 23:00:53,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:00:53,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:53,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:53,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:53,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:54,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129690076] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:54,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:54,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:00:54,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411413353] [2022-02-10 23:00:54,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:54,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:54,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:54,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:54,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:54,003 INFO L87 Difference]: Start difference. First operand 1908 states and 5453 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:57,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:57,315 INFO L93 Difference]: Finished difference Result 4001 states and 10852 transitions. [2022-02-10 23:00:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 23:00:57,316 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:00:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:57,322 INFO L225 Difference]: With dead ends: 4001 [2022-02-10 23:00:57,322 INFO L226 Difference]: Without dead ends: 3797 [2022-02-10 23:00:57,323 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1510, Invalid=7046, Unknown=0, NotChecked=0, Total=8556 [2022-02-10 23:00:57,323 INFO L934 BasicCegarLoop]: 176 mSDtfsCounter, 1023 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:57,323 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 2493 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-02-10 23:00:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2128. [2022-02-10 23:00:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.8913963328631875) internal successors, (6150), 2127 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 6150 transitions. [2022-02-10 23:00:57,359 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 6150 transitions. Word has length 69 [2022-02-10 23:00:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:57,360 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 6150 transitions. [2022-02-10 23:00:57,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 6150 transitions. [2022-02-10 23:00:57,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:00:57,363 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:57,363 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:57,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:57,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-10 23:00:57,564 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1903997487, now seen corresponding path program 37 times [2022-02-10 23:00:57,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:57,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831103538] [2022-02-10 23:00:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:57,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:57,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:57,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831103538] [2022-02-10 23:00:57,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831103538] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:57,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124403539] [2022-02-10 23:00:57,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:00:57,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:57,788 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:00:57,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 23:00:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:57,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:00:57,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:58,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:58,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124403539] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:58,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:58,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:00:58,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351322653] [2022-02-10 23:00:58,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:58,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:58,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:58,703 INFO L87 Difference]: Start difference. First operand 2128 states and 6150 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:00,867 INFO L93 Difference]: Finished difference Result 3980 states and 11079 transitions. [2022-02-10 23:01:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 23:01:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:00,874 INFO L225 Difference]: With dead ends: 3980 [2022-02-10 23:01:00,874 INFO L226 Difference]: Without dead ends: 3701 [2022-02-10 23:01:00,875 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1114, Invalid=4738, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 23:01:00,875 INFO L934 BasicCegarLoop]: 179 mSDtfsCounter, 749 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:00,875 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2874 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:01:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2022-02-10 23:01:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 2280. [2022-02-10 23:01:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2279 states have (on average 2.9258446687143485) internal successors, (6668), 2279 states have internal predecessors, (6668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 6668 transitions. [2022-02-10 23:01:00,950 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 6668 transitions. Word has length 69 [2022-02-10 23:01:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:00,951 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 6668 transitions. [2022-02-10 23:01:00,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 6668 transitions. [2022-02-10 23:01:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:01:00,956 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:00,956 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:00,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:01,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-10 23:01:01,180 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:01,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1018159229, now seen corresponding path program 38 times [2022-02-10 23:01:01,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:01,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822966437] [2022-02-10 23:01:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:01,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:01,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:01,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822966437] [2022-02-10 23:01:01,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822966437] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:01,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361213066] [2022-02-10 23:01:01,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:01:01,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:01,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:01,387 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:01,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 23:01:01,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:01:01,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:01,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:01:01,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:01,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:02,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361213066] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:02,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:02,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-10 23:01:02,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300783060] [2022-02-10 23:01:02,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:02,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:01:02,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:01:02,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:01:02,355 INFO L87 Difference]: Start difference. First operand 2280 states and 6668 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:04,931 INFO L93 Difference]: Finished difference Result 3893 states and 10806 transitions. [2022-02-10 23:01:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 23:01:04,931 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:04,936 INFO L225 Difference]: With dead ends: 3893 [2022-02-10 23:01:04,937 INFO L226 Difference]: Without dead ends: 3614 [2022-02-10 23:01:04,937 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1263, Invalid=5379, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 23:01:04,943 INFO L934 BasicCegarLoop]: 185 mSDtfsCounter, 834 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:04,943 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2684 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:01:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-02-10 23:01:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 2084. [2022-02-10 23:01:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 2.8886221795487277) internal successors, (6017), 2083 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 6017 transitions. [2022-02-10 23:01:04,974 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 6017 transitions. Word has length 69 [2022-02-10 23:01:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:04,974 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 6017 transitions. [2022-02-10 23:01:04,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:04,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 6017 transitions. [2022-02-10 23:01:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:01:04,978 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:04,978 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:04,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:05,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-02-10 23:01:05,178 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:05,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1255613195, now seen corresponding path program 39 times [2022-02-10 23:01:05,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:05,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163130844] [2022-02-10 23:01:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:05,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:05,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:05,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163130844] [2022-02-10 23:01:05,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163130844] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:05,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619252704] [2022-02-10 23:01:05,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:01:05,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:05,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:05,376 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:05,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 23:01:05,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:01:05,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:05,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:01:05,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:05,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:06,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619252704] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:06,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:06,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:01:06,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909595738] [2022-02-10 23:01:06,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:06,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:06,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:06,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:06,205 INFO L87 Difference]: Start difference. First operand 2084 states and 6017 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:08,980 INFO L93 Difference]: Finished difference Result 3843 states and 10657 transitions. [2022-02-10 23:01:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 23:01:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:08,986 INFO L225 Difference]: With dead ends: 3843 [2022-02-10 23:01:08,986 INFO L226 Difference]: Without dead ends: 3741 [2022-02-10 23:01:08,987 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2972 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1683, Invalid=7247, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 23:01:08,987 INFO L934 BasicCegarLoop]: 199 mSDtfsCounter, 708 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:08,987 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 3251 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:01:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2022-02-10 23:01:09,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 2184. [2022-02-10 23:01:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.913421896472744) internal successors, (6360), 2183 states have internal predecessors, (6360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6360 transitions. [2022-02-10 23:01:09,034 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6360 transitions. Word has length 69 [2022-02-10 23:01:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:09,034 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6360 transitions. [2022-02-10 23:01:09,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6360 transitions. [2022-02-10 23:01:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:01:09,039 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:09,039 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:09,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:09,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-10 23:01:09,263 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:09,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 581739939, now seen corresponding path program 40 times [2022-02-10 23:01:09,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:09,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133030145] [2022-02-10 23:01:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:09,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:09,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133030145] [2022-02-10 23:01:09,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133030145] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:09,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786832199] [2022-02-10 23:01:09,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:01:09,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:09,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:09,454 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:09,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 23:01:09,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:01:09,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:09,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:01:09,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:09,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:10,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786832199] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:10,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:10,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:01:10,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515010794] [2022-02-10 23:01:10,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:10,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:10,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:10,244 INFO L87 Difference]: Start difference. First operand 2184 states and 6360 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:12,834 INFO L93 Difference]: Finished difference Result 3751 states and 10350 transitions. [2022-02-10 23:01:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 23:01:12,834 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:12,840 INFO L225 Difference]: With dead ends: 3751 [2022-02-10 23:01:12,840 INFO L226 Difference]: Without dead ends: 3580 [2022-02-10 23:01:12,841 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2804 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1668, Invalid=7074, Unknown=0, NotChecked=0, Total=8742 [2022-02-10 23:01:12,842 INFO L934 BasicCegarLoop]: 181 mSDtfsCounter, 980 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:12,842 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2326 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:01:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2022-02-10 23:01:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 2168. [2022-02-10 23:01:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 2.896169820027688) internal successors, (6276), 2167 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 6276 transitions. [2022-02-10 23:01:12,876 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 6276 transitions. Word has length 69 [2022-02-10 23:01:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:12,876 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 6276 transitions. [2022-02-10 23:01:12,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 6276 transitions. [2022-02-10 23:01:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:01:12,880 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:12,880 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:12,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:13,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-10 23:01:13,081 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1899223137, now seen corresponding path program 41 times [2022-02-10 23:01:13,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:13,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870994045] [2022-02-10 23:01:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:13,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:13,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870994045] [2022-02-10 23:01:13,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870994045] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:13,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325510634] [2022-02-10 23:01:13,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:01:13,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:13,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:13,284 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:13,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 23:01:13,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:01:13,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:13,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:01:13,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:13,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:14,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325510634] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:14,053 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:14,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:01:14,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347365156] [2022-02-10 23:01:14,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:14,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:14,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:14,054 INFO L87 Difference]: Start difference. First operand 2168 states and 6276 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:15,662 INFO L93 Difference]: Finished difference Result 3345 states and 9249 transitions. [2022-02-10 23:01:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 23:01:15,662 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:15,668 INFO L225 Difference]: With dead ends: 3345 [2022-02-10 23:01:15,668 INFO L226 Difference]: Without dead ends: 3138 [2022-02-10 23:01:15,669 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1631 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=931, Invalid=4769, Unknown=0, NotChecked=0, Total=5700 [2022-02-10 23:01:15,669 INFO L934 BasicCegarLoop]: 160 mSDtfsCounter, 555 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:15,669 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 2469 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:01:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-02-10 23:01:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2113. [2022-02-10 23:01:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.882102272727273) internal successors, (6087), 2112 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 6087 transitions. [2022-02-10 23:01:15,701 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 6087 transitions. Word has length 69 [2022-02-10 23:01:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:15,701 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 6087 transitions. [2022-02-10 23:01:15,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 6087 transitions. [2022-02-10 23:01:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:01:15,706 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:15,706 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:15,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:15,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:15,928 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash -555610421, now seen corresponding path program 42 times [2022-02-10 23:01:15,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:15,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639526721] [2022-02-10 23:01:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:16,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:16,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639526721] [2022-02-10 23:01:16,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639526721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:16,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889534309] [2022-02-10 23:01:16,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:01:16,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:16,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:16,124 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:16,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 23:01:16,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:01:16,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:16,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:01:16,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:16,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:16,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889534309] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:16,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:16,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:01:16,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672906816] [2022-02-10 23:01:16,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:16,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:16,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:16,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:16,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:16,991 INFO L87 Difference]: Start difference. First operand 2113 states and 6087 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:20,401 INFO L93 Difference]: Finished difference Result 4562 states and 12684 transitions. [2022-02-10 23:01:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-10 23:01:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:20,408 INFO L225 Difference]: With dead ends: 4562 [2022-02-10 23:01:20,408 INFO L226 Difference]: Without dead ends: 4460 [2022-02-10 23:01:20,409 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1894, Invalid=9236, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 23:01:20,409 INFO L934 BasicCegarLoop]: 176 mSDtfsCounter, 850 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:20,409 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 2609 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:01:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2022-02-10 23:01:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 2153. [2022-02-10 23:01:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.8945167286245352) internal successors, (6229), 2152 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 6229 transitions. [2022-02-10 23:01:20,447 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 6229 transitions. Word has length 69 [2022-02-10 23:01:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:20,447 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 6229 transitions. [2022-02-10 23:01:20,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 6229 transitions. [2022-02-10 23:01:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:01:20,450 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:20,450 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:20,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:20,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:20,651 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:20,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1229483677, now seen corresponding path program 43 times [2022-02-10 23:01:20,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:20,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352381355] [2022-02-10 23:01:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:20,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:20,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:20,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352381355] [2022-02-10 23:01:20,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352381355] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:20,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799778320] [2022-02-10 23:01:20,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:01:20,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:20,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:20,821 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:20,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 23:01:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:20,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:01:20,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:21,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:21,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799778320] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:21,659 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:21,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:01:21,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933339665] [2022-02-10 23:01:21,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:21,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:21,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:21,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:21,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:21,660 INFO L87 Difference]: Start difference. First operand 2153 states and 6229 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:24,269 INFO L93 Difference]: Finished difference Result 3918 states and 10968 transitions. [2022-02-10 23:01:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 23:01:24,273 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:24,279 INFO L225 Difference]: With dead ends: 3918 [2022-02-10 23:01:24,280 INFO L226 Difference]: Without dead ends: 3786 [2022-02-10 23:01:24,280 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1555, Invalid=7187, Unknown=0, NotChecked=0, Total=8742 [2022-02-10 23:01:24,281 INFO L934 BasicCegarLoop]: 188 mSDtfsCounter, 652 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:24,281 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2699 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:01:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2022-02-10 23:01:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 2133. [2022-02-10 23:01:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 2132 states have (on average 2.882739212007505) internal successors, (6146), 2132 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 6146 transitions. [2022-02-10 23:01:24,319 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 6146 transitions. Word has length 69 [2022-02-10 23:01:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:24,319 INFO L470 AbstractCegarLoop]: Abstraction has 2133 states and 6146 transitions. [2022-02-10 23:01:24,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 6146 transitions. [2022-02-10 23:01:24,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:01:24,324 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:24,324 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:24,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:24,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-10 23:01:24,539 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1961445015, now seen corresponding path program 44 times [2022-02-10 23:01:24,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:24,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571990309] [2022-02-10 23:01:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:24,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:24,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:24,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571990309] [2022-02-10 23:01:24,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571990309] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:24,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153821232] [2022-02-10 23:01:24,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:01:24,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:24,710 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:24,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 23:01:24,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:01:24,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:24,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:01:24,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:25,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:25,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153821232] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:25,589 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:25,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:01:25,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32907439] [2022-02-10 23:01:25,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:25,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:25,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:25,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:25,590 INFO L87 Difference]: Start difference. First operand 2133 states and 6146 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:30,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:30,356 INFO L93 Difference]: Finished difference Result 4865 states and 13513 transitions. [2022-02-10 23:01:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 23:01:30,357 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:30,364 INFO L225 Difference]: With dead ends: 4865 [2022-02-10 23:01:30,364 INFO L226 Difference]: Without dead ends: 4712 [2022-02-10 23:01:30,365 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4604 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2220, Invalid=11120, Unknown=0, NotChecked=0, Total=13340 [2022-02-10 23:01:30,366 INFO L934 BasicCegarLoop]: 203 mSDtfsCounter, 899 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:30,366 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 3166 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 23:01:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2022-02-10 23:01:30,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 2445. [2022-02-10 23:01:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 2444 states have (on average 2.911620294599018) internal successors, (7116), 2444 states have internal predecessors, (7116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 7116 transitions. [2022-02-10 23:01:30,418 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 7116 transitions. Word has length 69 [2022-02-10 23:01:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:30,419 INFO L470 AbstractCegarLoop]: Abstraction has 2445 states and 7116 transitions. [2022-02-10 23:01:30,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 7116 transitions. [2022-02-10 23:01:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-10 23:01:30,423 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:30,423 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:30,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:30,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-10 23:01:30,623 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:30,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:30,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1287571759, now seen corresponding path program 45 times [2022-02-10 23:01:30,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:30,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515503916] [2022-02-10 23:01:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:30,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:30,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515503916] [2022-02-10 23:01:30,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515503916] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:30,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66359362] [2022-02-10 23:01:30,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:01:30,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:30,802 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:30,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 23:01:30,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:01:30,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:30,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:01:30,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:31,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:31,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66359362] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:31,591 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:31,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-10 23:01:31,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425101770] [2022-02-10 23:01:31,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:31,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:31,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:31,592 INFO L87 Difference]: Start difference. First operand 2445 states and 7116 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:33,917 INFO L93 Difference]: Finished difference Result 4139 states and 11689 transitions. [2022-02-10 23:01:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 23:01:33,918 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-10 23:01:33,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:33,923 INFO L225 Difference]: With dead ends: 4139 [2022-02-10 23:01:33,924 INFO L226 Difference]: Without dead ends: 3941 [2022-02-10 23:01:33,924 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1289, Invalid=5683, Unknown=0, NotChecked=0, Total=6972 [2022-02-10 23:01:33,924 INFO L934 BasicCegarLoop]: 170 mSDtfsCounter, 858 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:33,925 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 2332 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:01:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2022-02-10 23:01:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 2485. [2022-02-10 23:01:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 2.9041867954911433) internal successors, (7214), 2484 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 7214 transitions. [2022-02-10 23:01:33,959 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 7214 transitions. Word has length 69 [2022-02-10 23:01:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:33,960 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 7214 transitions. [2022-02-10 23:01:33,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 7214 transitions. [2022-02-10 23:01:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:01:33,963 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:33,963 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:33,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:34,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-10 23:01:34,164 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1319302325, now seen corresponding path program 46 times [2022-02-10 23:01:34,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:34,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917680818] [2022-02-10 23:01:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:34,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:34,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:34,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917680818] [2022-02-10 23:01:34,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917680818] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:34,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989925629] [2022-02-10 23:01:34,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:01:34,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:34,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:34,389 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:34,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 23:01:34,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:01:34,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:34,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:01:34,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:34,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:35,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989925629] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:35,672 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:35,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:01:35,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247533376] [2022-02-10 23:01:35,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:35,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:01:35,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:35,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:01:35,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:01:35,673 INFO L87 Difference]: Start difference. First operand 2485 states and 7214 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:39,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:39,962 INFO L93 Difference]: Finished difference Result 5274 states and 14861 transitions. [2022-02-10 23:01:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-10 23:01:39,962 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:01:39,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:39,970 INFO L225 Difference]: With dead ends: 5274 [2022-02-10 23:01:39,970 INFO L226 Difference]: Without dead ends: 4920 [2022-02-10 23:01:39,971 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5834 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1835, Invalid=16255, Unknown=0, NotChecked=0, Total=18090 [2022-02-10 23:01:39,971 INFO L934 BasicCegarLoop]: 293 mSDtfsCounter, 1419 mSDsluCounter, 5558 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 5435 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:39,971 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 5435 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 23:01:39,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2022-02-10 23:01:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 2796. [2022-02-10 23:01:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2796 states, 2795 states have (on average 2.929159212880143) internal successors, (8187), 2795 states have internal predecessors, (8187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 8187 transitions. [2022-02-10 23:01:40,019 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 8187 transitions. Word has length 74 [2022-02-10 23:01:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:40,019 INFO L470 AbstractCegarLoop]: Abstraction has 2796 states and 8187 transitions. [2022-02-10 23:01:40,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 8187 transitions. [2022-02-10 23:01:40,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:01:40,022 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:40,022 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:40,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-10 23:01:40,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:40,223 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:40,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:40,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1906029941, now seen corresponding path program 47 times [2022-02-10 23:01:40,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:40,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391527620] [2022-02-10 23:01:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:40,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:40,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:40,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391527620] [2022-02-10 23:01:40,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391527620] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:40,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539030775] [2022-02-10 23:01:40,467 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:01:40,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:40,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:40,468 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:40,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 23:01:40,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:01:40,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:40,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:01:40,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:41,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:41,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539030775] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:41,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:41,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:01:41,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220473858] [2022-02-10 23:01:41,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:41,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:01:41,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:01:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:01:41,789 INFO L87 Difference]: Start difference. First operand 2796 states and 8187 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:46,193 INFO L93 Difference]: Finished difference Result 5568 states and 15569 transitions. [2022-02-10 23:01:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 23:01:46,193 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:01:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:46,201 INFO L225 Difference]: With dead ends: 5568 [2022-02-10 23:01:46,201 INFO L226 Difference]: Without dead ends: 5466 [2022-02-10 23:01:46,202 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4992 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1621, Invalid=14129, Unknown=0, NotChecked=0, Total=15750 [2022-02-10 23:01:46,203 INFO L934 BasicCegarLoop]: 262 mSDtfsCounter, 1472 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 4809 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:46,203 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1472 Valid, 4809 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 23:01:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2022-02-10 23:01:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 2896. [2022-02-10 23:01:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2895 states have (on average 2.9409326424870468) internal successors, (8514), 2895 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 8514 transitions. [2022-02-10 23:01:46,257 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 8514 transitions. Word has length 74 [2022-02-10 23:01:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:46,257 INFO L470 AbstractCegarLoop]: Abstraction has 2896 states and 8514 transitions. [2022-02-10 23:01:46,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 8514 transitions. [2022-02-10 23:01:46,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:01:46,261 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:46,261 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:46,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 23:01:46,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-10 23:01:46,461 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1715064099, now seen corresponding path program 48 times [2022-02-10 23:01:46,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:46,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383972816] [2022-02-10 23:01:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:46,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:46,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:46,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383972816] [2022-02-10 23:01:46,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383972816] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:46,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891438986] [2022-02-10 23:01:46,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:01:46,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:46,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:46,715 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:46,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 23:01:46,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:01:46,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:46,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:01:46,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:47,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:48,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891438986] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:48,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:48,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:01:48,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758999808] [2022-02-10 23:01:48,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:48,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:01:48,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:48,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:01:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:01:48,169 INFO L87 Difference]: Start difference. First operand 2896 states and 8514 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:53,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:53,050 INFO L93 Difference]: Finished difference Result 5080 states and 14216 transitions. [2022-02-10 23:01:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-10 23:01:53,050 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:01:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:53,057 INFO L225 Difference]: With dead ends: 5080 [2022-02-10 23:01:53,058 INFO L226 Difference]: Without dead ends: 4912 [2022-02-10 23:01:53,059 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5624 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1764, Invalid=15528, Unknown=0, NotChecked=0, Total=17292 [2022-02-10 23:01:53,059 INFO L934 BasicCegarLoop]: 273 mSDtfsCounter, 1331 mSDsluCounter, 5991 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 5894 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:53,059 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 5894 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:01:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2022-02-10 23:01:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 2864. [2022-02-10 23:01:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2863 states have (on average 2.9332867621376177) internal successors, (8398), 2863 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 8398 transitions. [2022-02-10 23:01:53,105 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 8398 transitions. Word has length 74 [2022-02-10 23:01:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:53,105 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 8398 transitions. [2022-02-10 23:01:53,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 8398 transitions. [2022-02-10 23:01:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:01:53,109 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:53,110 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:53,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-10 23:01:53,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:53,310 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:53,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:53,310 INFO L85 PathProgramCache]: Analyzing trace with hash -69525451, now seen corresponding path program 49 times [2022-02-10 23:01:53,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:53,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120011775] [2022-02-10 23:01:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:53,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:53,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:53,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120011775] [2022-02-10 23:01:53,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120011775] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:53,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342436800] [2022-02-10 23:01:53,528 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:01:53,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:53,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:53,529 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:01:53,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 23:01:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:53,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:01:53,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:54,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:54,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342436800] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:54,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:54,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:01:54,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407721741] [2022-02-10 23:01:54,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:54,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:01:54,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:54,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:01:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:01:54,861 INFO L87 Difference]: Start difference. First operand 2864 states and 8398 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:59,932 INFO L93 Difference]: Finished difference Result 6011 states and 16769 transitions. [2022-02-10 23:01:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-10 23:01:59,933 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:01:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:59,941 INFO L225 Difference]: With dead ends: 6011 [2022-02-10 23:01:59,942 INFO L226 Difference]: Without dead ends: 5858 [2022-02-10 23:01:59,943 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6417 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2075, Invalid=17107, Unknown=0, NotChecked=0, Total=19182 [2022-02-10 23:01:59,943 INFO L934 BasicCegarLoop]: 288 mSDtfsCounter, 1565 mSDsluCounter, 5182 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 5145 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:59,943 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 5145 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 23:01:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5858 states. [2022-02-10 23:01:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5858 to 3012. [2022-02-10 23:01:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3011 states have (on average 2.948189970109598) internal successors, (8877), 3011 states have internal predecessors, (8877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 8877 transitions. [2022-02-10 23:02:00,031 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 8877 transitions. Word has length 74 [2022-02-10 23:02:00,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:00,031 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 8877 transitions. [2022-02-10 23:02:00,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 8877 transitions. [2022-02-10 23:02:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:00,035 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:00,035 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:00,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:00,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-02-10 23:02:00,235 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash -743398707, now seen corresponding path program 50 times [2022-02-10 23:02:00,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:00,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731016953] [2022-02-10 23:02:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:00,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:00,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:00,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731016953] [2022-02-10 23:02:00,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731016953] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:00,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120145273] [2022-02-10 23:02:00,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:02:00,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:00,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:00,462 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:00,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 23:02:00,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:02:00,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:00,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:00,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:01,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:01,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120145273] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:01,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:01,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:01,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951057191] [2022-02-10 23:02:01,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:01,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:01,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:01,779 INFO L87 Difference]: Start difference. First operand 3012 states and 8877 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:07,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:07,603 INFO L93 Difference]: Finished difference Result 5413 states and 15179 transitions. [2022-02-10 23:02:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-10 23:02:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:02:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:07,611 INFO L225 Difference]: With dead ends: 5413 [2022-02-10 23:02:07,611 INFO L226 Difference]: Without dead ends: 5179 [2022-02-10 23:02:07,612 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7768 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2381, Invalid=19969, Unknown=0, NotChecked=0, Total=22350 [2022-02-10 23:02:07,612 INFO L934 BasicCegarLoop]: 280 mSDtfsCounter, 1402 mSDsluCounter, 6020 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 5912 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:07,612 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 5912 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:02:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2022-02-10 23:02:07,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 2892. [2022-02-10 23:02:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2891 states have (on average 2.9356624005534417) internal successors, (8487), 2891 states have internal predecessors, (8487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 8487 transitions. [2022-02-10 23:02:07,658 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 8487 transitions. Word has length 74 [2022-02-10 23:02:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:07,658 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 8487 transitions. [2022-02-10 23:02:07,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 8487 transitions. [2022-02-10 23:02:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:07,662 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:07,662 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:07,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:07,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-02-10 23:02:07,863 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1084664455, now seen corresponding path program 51 times [2022-02-10 23:02:07,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:07,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754686266] [2022-02-10 23:02:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:08,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:08,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754686266] [2022-02-10 23:02:08,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754686266] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:08,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841351969] [2022-02-10 23:02:08,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:02:08,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:08,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:08,099 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:08,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 23:02:08,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:02:08,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:08,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:08,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:08,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:09,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841351969] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:09,324 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:09,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:09,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001363869] [2022-02-10 23:02:09,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:09,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:09,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:09,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:09,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:09,325 INFO L87 Difference]: Start difference. First operand 2892 states and 8487 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:11,207 INFO L93 Difference]: Finished difference Result 4228 states and 12033 transitions. [2022-02-10 23:02:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 23:02:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:02:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:11,214 INFO L225 Difference]: With dead ends: 4228 [2022-02-10 23:02:11,214 INFO L226 Difference]: Without dead ends: 4126 [2022-02-10 23:02:11,215 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=873, Invalid=6609, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 23:02:11,215 INFO L934 BasicCegarLoop]: 205 mSDtfsCounter, 1009 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:11,215 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 2673 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:02:11,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2022-02-10 23:02:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3090. [2022-02-10 23:02:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 3089 states have (on average 2.9494982194885075) internal successors, (9111), 3089 states have internal predecessors, (9111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 9111 transitions. [2022-02-10 23:02:11,263 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 9111 transitions. Word has length 74 [2022-02-10 23:02:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:11,263 INFO L470 AbstractCegarLoop]: Abstraction has 3090 states and 9111 transitions. [2022-02-10 23:02:11,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 9111 transitions. [2022-02-10 23:02:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:11,267 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:11,267 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:11,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:11,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:11,468 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash 440163693, now seen corresponding path program 52 times [2022-02-10 23:02:11,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:11,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066022908] [2022-02-10 23:02:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:11,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:11,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066022908] [2022-02-10 23:02:11,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066022908] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:11,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228386192] [2022-02-10 23:02:11,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:02:11,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:11,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:11,764 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:11,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 23:02:11,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:02:11,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:11,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:11,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:12,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:12,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228386192] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:12,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:12,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:12,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800070569] [2022-02-10 23:02:12,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:12,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:12,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:12,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1414, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:12,890 INFO L87 Difference]: Start difference. First operand 3090 states and 9111 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:18,890 INFO L93 Difference]: Finished difference Result 6445 states and 17787 transitions. [2022-02-10 23:02:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-10 23:02:18,890 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:02:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:18,900 INFO L225 Difference]: With dead ends: 6445 [2022-02-10 23:02:18,900 INFO L226 Difference]: Without dead ends: 6241 [2022-02-10 23:02:18,901 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10039 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3586, Invalid=24806, Unknown=0, NotChecked=0, Total=28392 [2022-02-10 23:02:18,901 INFO L934 BasicCegarLoop]: 336 mSDtfsCounter, 2052 mSDsluCounter, 6342 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 6282 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:18,901 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2052 Valid, 6282 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-10 23:02:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-02-10 23:02:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 3246. [2022-02-10 23:02:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3245 states have (on average 2.9781201848998458) internal successors, (9664), 3245 states have internal predecessors, (9664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 9664 transitions. [2022-02-10 23:02:18,962 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 9664 transitions. Word has length 74 [2022-02-10 23:02:18,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:18,962 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 9664 transitions. [2022-02-10 23:02:18,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 9664 transitions. [2022-02-10 23:02:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:18,967 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:18,967 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:18,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:19,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-10 23:02:19,168 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash -233709563, now seen corresponding path program 53 times [2022-02-10 23:02:19,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:19,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046039507] [2022-02-10 23:02:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:19,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:19,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:19,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046039507] [2022-02-10 23:02:19,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046039507] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:19,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493827914] [2022-02-10 23:02:19,434 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:02:19,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:19,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:19,435 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:19,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 23:02:19,525 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:02:19,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:19,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:20,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:20,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493827914] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:20,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:20,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:20,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114696401] [2022-02-10 23:02:20,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:20,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:20,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:20,659 INFO L87 Difference]: Start difference. First operand 3246 states and 9664 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:24,695 INFO L93 Difference]: Finished difference Result 5507 states and 15504 transitions. [2022-02-10 23:02:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-10 23:02:24,695 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:02:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:24,702 INFO L225 Difference]: With dead ends: 5507 [2022-02-10 23:02:24,702 INFO L226 Difference]: Without dead ends: 5147 [2022-02-10 23:02:24,703 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6105 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2686, Invalid=15674, Unknown=0, NotChecked=0, Total=18360 [2022-02-10 23:02:24,703 INFO L934 BasicCegarLoop]: 248 mSDtfsCounter, 1526 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:24,703 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 4101 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 23:02:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2022-02-10 23:02:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 3221. [2022-02-10 23:02:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3220 states have (on average 2.966770186335404) internal successors, (9553), 3220 states have internal predecessors, (9553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 9553 transitions. [2022-02-10 23:02:24,751 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 9553 transitions. Word has length 74 [2022-02-10 23:02:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:24,752 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 9553 transitions. [2022-02-10 23:02:24,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 9553 transitions. [2022-02-10 23:02:24,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:24,756 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:24,756 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:24,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:24,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-10 23:02:24,956 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:24,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:24,957 INFO L85 PathProgramCache]: Analyzing trace with hash 126938247, now seen corresponding path program 54 times [2022-02-10 23:02:24,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:24,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180881479] [2022-02-10 23:02:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:24,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:25,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:25,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180881479] [2022-02-10 23:02:25,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180881479] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:25,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123545697] [2022-02-10 23:02:25,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:02:25,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:25,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:25,220 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:25,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 23:02:25,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:02:25,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:25,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:25,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:25,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:26,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123545697] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:26,652 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:26,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:26,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518392155] [2022-02-10 23:02:26,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:26,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:26,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:26,653 INFO L87 Difference]: Start difference. First operand 3221 states and 9553 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:32,969 INFO L93 Difference]: Finished difference Result 6719 states and 18885 transitions. [2022-02-10 23:02:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-10 23:02:32,969 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:02:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:32,979 INFO L225 Difference]: With dead ends: 6719 [2022-02-10 23:02:32,979 INFO L226 Difference]: Without dead ends: 6566 [2022-02-10 23:02:32,981 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7810 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2198, Invalid=20452, Unknown=0, NotChecked=0, Total=22650 [2022-02-10 23:02:32,981 INFO L934 BasicCegarLoop]: 288 mSDtfsCounter, 1402 mSDsluCounter, 5473 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 5456 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:32,981 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 5456 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 23:02:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2022-02-10 23:02:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 3397. [2022-02-10 23:02:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3396 states have (on average 2.989693757361602) internal successors, (10153), 3396 states have internal predecessors, (10153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:33,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 10153 transitions. [2022-02-10 23:02:33,044 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 10153 transitions. Word has length 74 [2022-02-10 23:02:33,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:33,044 INFO L470 AbstractCegarLoop]: Abstraction has 3397 states and 10153 transitions. [2022-02-10 23:02:33,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 10153 transitions. [2022-02-10 23:02:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:33,049 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:33,049 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:33,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:33,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:33,250 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash -546935009, now seen corresponding path program 55 times [2022-02-10 23:02:33,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:33,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735179773] [2022-02-10 23:02:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:33,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:33,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:33,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735179773] [2022-02-10 23:02:33,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735179773] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:33,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193994368] [2022-02-10 23:02:33,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:02:33,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:33,467 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:33,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 23:02:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:33,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:33,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:34,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:34,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193994368] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:34,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:34,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:34,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628924152] [2022-02-10 23:02:34,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:34,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:34,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1450, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:34,832 INFO L87 Difference]: Start difference. First operand 3397 states and 10153 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:40,804 INFO L93 Difference]: Finished difference Result 6005 states and 16919 transitions. [2022-02-10 23:02:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-10 23:02:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:02:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:40,813 INFO L225 Difference]: With dead ends: 6005 [2022-02-10 23:02:40,813 INFO L226 Difference]: Without dead ends: 5762 [2022-02-10 23:02:40,814 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8101 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2207, Invalid=21049, Unknown=0, NotChecked=0, Total=23256 [2022-02-10 23:02:40,814 INFO L934 BasicCegarLoop]: 313 mSDtfsCounter, 1517 mSDsluCounter, 4912 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:40,815 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 4939 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:02:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2022-02-10 23:02:40,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 3365. [2022-02-10 23:02:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 3364 states have (on average 2.977705112960761) internal successors, (10017), 3364 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 10017 transitions. [2022-02-10 23:02:40,870 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 10017 transitions. Word has length 74 [2022-02-10 23:02:40,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:40,870 INFO L470 AbstractCegarLoop]: Abstraction has 3365 states and 10017 transitions. [2022-02-10 23:02:40,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 10017 transitions. [2022-02-10 23:02:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:40,874 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:40,874 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:40,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-10 23:02:41,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:41,075 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:41,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1507884503, now seen corresponding path program 56 times [2022-02-10 23:02:41,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:41,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520704949] [2022-02-10 23:02:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:41,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:41,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:41,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520704949] [2022-02-10 23:02:41,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520704949] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:41,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900712242] [2022-02-10 23:02:41,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:02:41,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:41,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:41,328 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:41,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 23:02:41,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:02:41,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:41,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:41,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:41,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:42,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900712242] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:42,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:42,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:42,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208129602] [2022-02-10 23:02:42,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:42,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:42,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:42,666 INFO L87 Difference]: Start difference. First operand 3365 states and 10017 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:48,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:48,014 INFO L93 Difference]: Finished difference Result 6318 states and 17865 transitions. [2022-02-10 23:02:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-10 23:02:48,014 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:02:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:48,023 INFO L225 Difference]: With dead ends: 6318 [2022-02-10 23:02:48,024 INFO L226 Difference]: Without dead ends: 6165 [2022-02-10 23:02:48,024 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5970 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1786, Invalid=16304, Unknown=0, NotChecked=0, Total=18090 [2022-02-10 23:02:48,025 INFO L934 BasicCegarLoop]: 294 mSDtfsCounter, 1066 mSDsluCounter, 7119 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 6998 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:48,025 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 6998 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 23:02:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6165 states. [2022-02-10 23:02:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6165 to 3465. [2022-02-10 23:02:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3465 states, 3464 states have (on average 2.9988452655889146) internal successors, (10388), 3464 states have internal predecessors, (10388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 10388 transitions. [2022-02-10 23:02:48,085 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 10388 transitions. Word has length 74 [2022-02-10 23:02:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:48,085 INFO L470 AbstractCegarLoop]: Abstraction has 3465 states and 10388 transitions. [2022-02-10 23:02:48,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 10388 transitions. [2022-02-10 23:02:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:48,090 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:48,090 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:48,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:48,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:48,292 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2113209537, now seen corresponding path program 57 times [2022-02-10 23:02:48,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:48,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108953339] [2022-02-10 23:02:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:48,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:48,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108953339] [2022-02-10 23:02:48,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108953339] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:48,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526562857] [2022-02-10 23:02:48,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:02:48,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:48,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:48,552 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:48,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 23:02:48,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:02:48,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:48,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:48,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:49,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:49,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526562857] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:49,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:49,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:49,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505175627] [2022-02-10 23:02:49,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:49,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:49,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:49,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:49,947 INFO L87 Difference]: Start difference. First operand 3465 states and 10388 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:54,540 INFO L93 Difference]: Finished difference Result 5684 states and 16183 transitions. [2022-02-10 23:02:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-10 23:02:54,540 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:02:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:54,549 INFO L225 Difference]: With dead ends: 5684 [2022-02-10 23:02:54,549 INFO L226 Difference]: Without dead ends: 5441 [2022-02-10 23:02:54,550 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1628, Invalid=14884, Unknown=0, NotChecked=0, Total=16512 [2022-02-10 23:02:54,551 INFO L934 BasicCegarLoop]: 300 mSDtfsCounter, 1025 mSDsluCounter, 6165 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 6123 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:54,551 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 6123 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 23:02:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2022-02-10 23:02:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 3401. [2022-02-10 23:02:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 3400 states have (on average 2.981176470588235) internal successors, (10136), 3400 states have internal predecessors, (10136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 10136 transitions. [2022-02-10 23:02:54,616 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 10136 transitions. Word has length 74 [2022-02-10 23:02:54,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:54,616 INFO L470 AbstractCegarLoop]: Abstraction has 3401 states and 10136 transitions. [2022-02-10 23:02:54,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 10136 transitions. [2022-02-10 23:02:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:02:54,622 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:54,622 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:54,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:54,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-10 23:02:54,837 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1327806731, now seen corresponding path program 58 times [2022-02-10 23:02:54,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:54,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069000609] [2022-02-10 23:02:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:55,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:55,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069000609] [2022-02-10 23:02:55,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069000609] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:55,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471865197] [2022-02-10 23:02:55,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:02:55,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:55,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:55,063 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:02:55,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 23:02:55,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:02:55,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:55,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:02:55,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:55,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:56,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471865197] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:56,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:56,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:02:56,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232863669] [2022-02-10 23:02:56,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:56,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:02:56,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:56,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:02:56,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:02:56,354 INFO L87 Difference]: Start difference. First operand 3401 states and 10136 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:02,038 INFO L93 Difference]: Finished difference Result 6166 states and 17524 transitions. [2022-02-10 23:03:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-10 23:03:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:03:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:02,048 INFO L225 Difference]: With dead ends: 6166 [2022-02-10 23:03:02,048 INFO L226 Difference]: Without dead ends: 5953 [2022-02-10 23:03:02,049 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7977 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2229, Invalid=21027, Unknown=0, NotChecked=0, Total=23256 [2022-02-10 23:03:02,049 INFO L934 BasicCegarLoop]: 286 mSDtfsCounter, 1150 mSDsluCounter, 5019 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 5053 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:02,049 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 5053 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 23:03:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2022-02-10 23:03:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 3585. [2022-02-10 23:03:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 2.9815848214285716) internal successors, (10686), 3584 states have internal predecessors, (10686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 10686 transitions. [2022-02-10 23:03:02,108 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 10686 transitions. Word has length 74 [2022-02-10 23:03:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:02,108 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 10686 transitions. [2022-02-10 23:03:02,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 10686 transitions. [2022-02-10 23:03:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:03:02,113 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:02,113 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:02,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-10 23:03:02,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-02-10 23:03:02,314 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash -485881909, now seen corresponding path program 59 times [2022-02-10 23:03:02,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:02,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568476298] [2022-02-10 23:03:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:02,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:02,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:02,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568476298] [2022-02-10 23:03:02,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568476298] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:02,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759482405] [2022-02-10 23:03:02,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:03:02,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:02,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:02,555 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:02,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 23:03:02,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:03:02,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:02,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:03:02,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:03,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:03,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759482405] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:03,877 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:03,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:03:03,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991804801] [2022-02-10 23:03:03,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:03,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:03:03,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:03,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:03:03,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:03:03,877 INFO L87 Difference]: Start difference. First operand 3585 states and 10686 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:10,258 INFO L93 Difference]: Finished difference Result 7074 states and 20143 transitions. [2022-02-10 23:03:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-10 23:03:10,258 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:03:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:10,269 INFO L225 Difference]: With dead ends: 7074 [2022-02-10 23:03:10,269 INFO L226 Difference]: Without dead ends: 6921 [2022-02-10 23:03:10,270 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8503 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2703, Invalid=21477, Unknown=0, NotChecked=0, Total=24180 [2022-02-10 23:03:10,270 INFO L934 BasicCegarLoop]: 327 mSDtfsCounter, 1146 mSDsluCounter, 7164 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 7146 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:10,270 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 7146 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3642 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 23:03:10,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6921 states. [2022-02-10 23:03:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6921 to 3673. [2022-02-10 23:03:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 3672 states have (on average 2.9891067538126364) internal successors, (10976), 3672 states have internal predecessors, (10976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 10976 transitions. [2022-02-10 23:03:10,347 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 10976 transitions. Word has length 74 [2022-02-10 23:03:10,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:10,347 INFO L470 AbstractCegarLoop]: Abstraction has 3673 states and 10976 transitions. [2022-02-10 23:03:10,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:10,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 10976 transitions. [2022-02-10 23:03:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:03:10,353 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:10,353 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:10,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:10,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-02-10 23:03:10,577 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:10,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1159755165, now seen corresponding path program 60 times [2022-02-10 23:03:10,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:10,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690199487] [2022-02-10 23:03:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:10,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:10,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:10,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690199487] [2022-02-10 23:03:10,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690199487] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:10,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378090749] [2022-02-10 23:03:10,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:03:10,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:10,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:10,813 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:10,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 23:03:10,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:03:10,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:10,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:03:10,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:11,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:12,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378090749] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:12,146 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:12,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:03:12,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279360595] [2022-02-10 23:03:12,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:12,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:03:12,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:12,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:03:12,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:03:12,148 INFO L87 Difference]: Start difference. First operand 3673 states and 10976 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:18,896 INFO L93 Difference]: Finished difference Result 6595 states and 18831 transitions. [2022-02-10 23:03:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-10 23:03:18,897 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:03:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:18,907 INFO L225 Difference]: With dead ends: 6595 [2022-02-10 23:03:18,907 INFO L226 Difference]: Without dead ends: 6397 [2022-02-10 23:03:18,908 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9186 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2527, Invalid=23233, Unknown=0, NotChecked=0, Total=25760 [2022-02-10 23:03:18,909 INFO L934 BasicCegarLoop]: 306 mSDtfsCounter, 1128 mSDsluCounter, 6646 mSDsCounter, 0 mSdLazyCounter, 3397 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 6625 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:18,909 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 6625 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3397 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-10 23:03:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2022-02-10 23:03:18,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 3669. [2022-02-10 23:03:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 3668 states have (on average 2.9850054525627043) internal successors, (10949), 3668 states have internal predecessors, (10949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 10949 transitions. [2022-02-10 23:03:18,974 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 10949 transitions. Word has length 74 [2022-02-10 23:03:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:18,974 INFO L470 AbstractCegarLoop]: Abstraction has 3669 states and 10949 transitions. [2022-02-10 23:03:18,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 10949 transitions. [2022-02-10 23:03:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:03:18,979 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:18,979 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:18,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:19,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:19,180 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash -410298985, now seen corresponding path program 61 times [2022-02-10 23:03:19,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:19,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846339927] [2022-02-10 23:03:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:19,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:19,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:19,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846339927] [2022-02-10 23:03:19,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846339927] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:19,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906592120] [2022-02-10 23:03:19,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:03:19,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:19,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:19,432 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:19,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 23:03:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:19,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:03:19,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:20,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:20,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906592120] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:20,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:20,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:03:20,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465355217] [2022-02-10 23:03:20,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:20,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:03:20,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:03:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:03:20,586 INFO L87 Difference]: Start difference. First operand 3669 states and 10949 transitions. Second operand has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:23,001 INFO L93 Difference]: Finished difference Result 5647 states and 16189 transitions. [2022-02-10 23:03:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 23:03:23,002 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:03:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:23,011 INFO L225 Difference]: With dead ends: 5647 [2022-02-10 23:03:23,011 INFO L226 Difference]: Without dead ends: 5545 [2022-02-10 23:03:23,012 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1246, Invalid=9056, Unknown=0, NotChecked=0, Total=10302 [2022-02-10 23:03:23,012 INFO L934 BasicCegarLoop]: 220 mSDtfsCounter, 853 mSDsluCounter, 3941 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3942 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:23,013 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3942 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:03:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-02-10 23:03:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 3825. [2022-02-10 23:03:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3824 states have (on average 2.9973849372384938) internal successors, (11462), 3824 states have internal predecessors, (11462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 11462 transitions. [2022-02-10 23:03:23,097 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 11462 transitions. Word has length 74 [2022-02-10 23:03:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:23,097 INFO L470 AbstractCegarLoop]: Abstraction has 3825 states and 11462 transitions. [2022-02-10 23:03:23,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 11462 transitions. [2022-02-10 23:03:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:03:23,102 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:23,102 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:23,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-10 23:03:23,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:23,303 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash -389581599, now seen corresponding path program 62 times [2022-02-10 23:03:23,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:23,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865561662] [2022-02-10 23:03:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:23,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:23,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:23,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865561662] [2022-02-10 23:03:23,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865561662] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:23,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796921780] [2022-02-10 23:03:23,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:03:23,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:23,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:23,538 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:23,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 23:03:23,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:03:23,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:23,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:03:23,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:24,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:24,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796921780] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:24,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:24,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:03:24,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135443367] [2022-02-10 23:03:24,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:03:24,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:03:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1436, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:03:24,742 INFO L87 Difference]: Start difference. First operand 3825 states and 11462 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:27,763 INFO L93 Difference]: Finished difference Result 5455 states and 15725 transitions. [2022-02-10 23:03:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 23:03:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:03:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:27,772 INFO L225 Difference]: With dead ends: 5455 [2022-02-10 23:03:27,772 INFO L226 Difference]: Without dead ends: 5353 [2022-02-10 23:03:27,772 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2678 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1115, Invalid=7815, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 23:03:27,773 INFO L934 BasicCegarLoop]: 212 mSDtfsCounter, 874 mSDsluCounter, 4244 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:27,773 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 4228 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:03:27,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2022-02-10 23:03:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3853. [2022-02-10 23:03:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3853 states, 3852 states have (on average 2.9976635514018692) internal successors, (11547), 3852 states have internal predecessors, (11547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 11547 transitions. [2022-02-10 23:03:27,833 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 11547 transitions. Word has length 74 [2022-02-10 23:03:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:27,833 INFO L470 AbstractCegarLoop]: Abstraction has 3853 states and 11547 transitions. [2022-02-10 23:03:27,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 11547 transitions. [2022-02-10 23:03:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:03:27,838 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:27,838 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:27,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:28,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-10 23:03:28,039 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1034082361, now seen corresponding path program 63 times [2022-02-10 23:03:28,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:28,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233189548] [2022-02-10 23:03:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:28,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:28,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233189548] [2022-02-10 23:03:28,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233189548] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:28,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985279327] [2022-02-10 23:03:28,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:03:28,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:28,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:28,284 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:28,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 23:03:28,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:03:28,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:28,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:03:28,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:28,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:29,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985279327] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:29,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:29,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:03:29,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569173229] [2022-02-10 23:03:29,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:29,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:03:29,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:03:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:03:29,458 INFO L87 Difference]: Start difference. First operand 3853 states and 11547 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:37,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:37,892 INFO L93 Difference]: Finished difference Result 8370 states and 23518 transitions. [2022-02-10 23:03:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-02-10 23:03:37,893 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:03:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:37,905 INFO L225 Difference]: With dead ends: 8370 [2022-02-10 23:03:37,905 INFO L226 Difference]: Without dead ends: 8136 [2022-02-10 23:03:37,907 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16880 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=5486, Invalid=38404, Unknown=0, NotChecked=0, Total=43890 [2022-02-10 23:03:37,907 INFO L934 BasicCegarLoop]: 362 mSDtfsCounter, 1992 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 3399 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 6964 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 3399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:37,907 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 6964 Invalid, 3782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 3399 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 23:03:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8136 states. [2022-02-10 23:03:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8136 to 4121. [2022-02-10 23:03:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4121 states, 4120 states have (on average 3.013592233009709) internal successors, (12416), 4120 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 12416 transitions. [2022-02-10 23:03:37,987 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 12416 transitions. Word has length 74 [2022-02-10 23:03:37,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:37,987 INFO L470 AbstractCegarLoop]: Abstraction has 4121 states and 12416 transitions. [2022-02-10 23:03:37,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:37,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 12416 transitions. [2022-02-10 23:03:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:03:37,993 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:37,993 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:38,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:38,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-10 23:03:38,193 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:38,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1509045113, now seen corresponding path program 64 times [2022-02-10 23:03:38,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:38,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881908725] [2022-02-10 23:03:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:38,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:38,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:38,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881908725] [2022-02-10 23:03:38,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881908725] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:38,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323994990] [2022-02-10 23:03:38,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:03:38,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:38,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:38,461 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:38,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 23:03:38,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:03:38,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:38,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:03:38,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:39,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:39,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323994990] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:39,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:39,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:03:39,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850660147] [2022-02-10 23:03:39,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:39,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:03:39,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:39,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:03:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:03:39,825 INFO L87 Difference]: Start difference. First operand 4121 states and 12416 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:47,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:47,382 INFO L93 Difference]: Finished difference Result 8546 states and 24271 transitions. [2022-02-10 23:03:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-10 23:03:47,382 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:03:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:47,395 INFO L225 Difference]: With dead ends: 8546 [2022-02-10 23:03:47,395 INFO L226 Difference]: Without dead ends: 8261 [2022-02-10 23:03:47,396 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12173 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2808, Invalid=30498, Unknown=0, NotChecked=0, Total=33306 [2022-02-10 23:03:47,397 INFO L934 BasicCegarLoop]: 350 mSDtfsCounter, 1511 mSDsluCounter, 6927 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 3650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:47,397 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 6916 Invalid, 3650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 23:03:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8261 states. [2022-02-10 23:03:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8261 to 4401. [2022-02-10 23:03:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4400 states have (on average 3.0322727272727272) internal successors, (13342), 4400 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 13342 transitions. [2022-02-10 23:03:47,478 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 13342 transitions. Word has length 74 [2022-02-10 23:03:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:47,478 INFO L470 AbstractCegarLoop]: Abstraction has 4401 states and 13342 transitions. [2022-02-10 23:03:47,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 13342 transitions. [2022-02-10 23:03:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:03:47,484 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:47,484 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:47,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:47,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:47,684 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:47,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash 835171857, now seen corresponding path program 65 times [2022-02-10 23:03:47,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:47,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868206142] [2022-02-10 23:03:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:47,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:47,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868206142] [2022-02-10 23:03:47,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868206142] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:47,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905407325] [2022-02-10 23:03:47,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:03:47,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:47,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:47,947 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:47,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 23:03:48,029 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:03:48,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:48,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:03:48,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:48,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:49,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905407325] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:49,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:49,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:03:49,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423651139] [2022-02-10 23:03:49,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:49,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:03:49,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:49,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:03:49,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:03:49,340 INFO L87 Difference]: Start difference. First operand 4401 states and 13342 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:56,622 INFO L93 Difference]: Finished difference Result 7638 states and 21892 transitions. [2022-02-10 23:03:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-10 23:03:56,622 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:03:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:56,637 INFO L225 Difference]: With dead ends: 7638 [2022-02-10 23:03:56,638 INFO L226 Difference]: Without dead ends: 7227 [2022-02-10 23:03:56,639 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9807 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2682, Invalid=25040, Unknown=0, NotChecked=0, Total=27722 [2022-02-10 23:03:56,640 INFO L934 BasicCegarLoop]: 298 mSDtfsCounter, 1298 mSDsluCounter, 7232 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 7179 SdHoareTripleChecker+Invalid, 3954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:56,640 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 7179 Invalid, 3954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-10 23:03:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2022-02-10 23:03:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 4649. [2022-02-10 23:03:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4648 states have (on average 3.0395869191049916) internal successors, (14128), 4648 states have internal predecessors, (14128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 14128 transitions. [2022-02-10 23:03:56,723 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 14128 transitions. Word has length 74 [2022-02-10 23:03:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:56,724 INFO L470 AbstractCegarLoop]: Abstraction has 4649 states and 14128 transitions. [2022-02-10 23:03:56,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 14128 transitions. [2022-02-10 23:03:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:03:56,730 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:56,730 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:56,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-10 23:03:56,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-10 23:03:56,931 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash -125777637, now seen corresponding path program 66 times [2022-02-10 23:03:56,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:56,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480827747] [2022-02-10 23:03:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:57,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:57,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480827747] [2022-02-10 23:03:57,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480827747] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:57,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113994567] [2022-02-10 23:03:57,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:03:57,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:57,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:57,208 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:03:57,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 23:03:57,338 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:03:57,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:57,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:03:57,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:57,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:58,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113994567] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:58,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:58,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:03:58,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915133413] [2022-02-10 23:03:58,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:58,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:03:58,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:03:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:03:58,639 INFO L87 Difference]: Start difference. First operand 4649 states and 14128 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:07,887 INFO L93 Difference]: Finished difference Result 9639 states and 27462 transitions. [2022-02-10 23:04:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-02-10 23:04:07,887 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:04:07,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:07,903 INFO L225 Difference]: With dead ends: 9639 [2022-02-10 23:04:07,903 INFO L226 Difference]: Without dead ends: 9426 [2022-02-10 23:04:07,905 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15082 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3428, Invalid=36772, Unknown=0, NotChecked=0, Total=40200 [2022-02-10 23:04:07,905 INFO L934 BasicCegarLoop]: 365 mSDtfsCounter, 1823 mSDsluCounter, 7653 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 7536 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:04:07,905 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 7536 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 3724 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 23:04:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2022-02-10 23:04:08,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 4912. [2022-02-10 23:04:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4911 states have (on average 3.058440236204439) internal successors, (15020), 4911 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:08,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 15020 transitions. [2022-02-10 23:04:08,017 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 15020 transitions. Word has length 74 [2022-02-10 23:04:08,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:08,017 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 15020 transitions. [2022-02-10 23:04:08,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 15020 transitions. [2022-02-10 23:04:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:04:08,024 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:08,024 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:04:08,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-10 23:04:08,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-10 23:04:08,225 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:08,225 INFO L85 PathProgramCache]: Analyzing trace with hash -799650893, now seen corresponding path program 67 times [2022-02-10 23:04:08,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:08,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981787536] [2022-02-10 23:04:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:08,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:08,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981787536] [2022-02-10 23:04:08,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981787536] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:08,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814853561] [2022-02-10 23:04:08,485 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:04:08,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:08,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:08,486 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:08,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 23:04:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:08,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:04:08,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:09,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:09,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814853561] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:09,768 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:09,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:04:09,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394811502] [2022-02-10 23:04:09,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:09,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:04:09,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:04:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:04:09,769 INFO L87 Difference]: Start difference. First operand 4912 states and 15020 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:15,997 INFO L93 Difference]: Finished difference Result 8084 states and 23396 transitions. [2022-02-10 23:04:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-02-10 23:04:15,998 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:04:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:16,011 INFO L225 Difference]: With dead ends: 8084 [2022-02-10 23:04:16,011 INFO L226 Difference]: Without dead ends: 7760 [2022-02-10 23:04:16,013 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9845 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2738, Invalid=25318, Unknown=0, NotChecked=0, Total=28056 [2022-02-10 23:04:16,013 INFO L934 BasicCegarLoop]: 314 mSDtfsCounter, 1633 mSDsluCounter, 5800 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:04:16,013 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 5794 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 3054 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-10 23:04:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2022-02-10 23:04:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 4936. [2022-02-10 23:04:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4936 states, 4935 states have (on average 3.059371833839919) internal successors, (15098), 4935 states have internal predecessors, (15098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 15098 transitions. [2022-02-10 23:04:16,106 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 15098 transitions. Word has length 74 [2022-02-10 23:04:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:16,106 INFO L470 AbstractCegarLoop]: Abstraction has 4936 states and 15098 transitions. [2022-02-10 23:04:16,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 15098 transitions. [2022-02-10 23:04:16,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:04:16,114 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:16,114 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:04:16,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-10 23:04:16,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-10 23:04:16,314 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:16,315 INFO L85 PathProgramCache]: Analyzing trace with hash -537638723, now seen corresponding path program 68 times [2022-02-10 23:04:16,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:16,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252220389] [2022-02-10 23:04:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:16,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:16,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:16,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252220389] [2022-02-10 23:04:16,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252220389] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:16,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204878703] [2022-02-10 23:04:16,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:04:16,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:16,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:16,568 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:16,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 23:04:16,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:04:16,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:16,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:04:16,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:17,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:17,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204878703] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:17,922 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:17,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:04:17,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933143319] [2022-02-10 23:04:17,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:17,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:04:17,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:04:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:04:17,923 INFO L87 Difference]: Start difference. First operand 4936 states and 15098 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:25,381 INFO L93 Difference]: Finished difference Result 8215 states and 23694 transitions. [2022-02-10 23:04:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-02-10 23:04:25,381 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:04:25,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:25,394 INFO L225 Difference]: With dead ends: 8215 [2022-02-10 23:04:25,394 INFO L226 Difference]: Without dead ends: 7804 [2022-02-10 23:04:25,397 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11234 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2914, Invalid=28592, Unknown=0, NotChecked=0, Total=31506 [2022-02-10 23:04:25,397 INFO L934 BasicCegarLoop]: 318 mSDtfsCounter, 1323 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 6259 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:04:25,397 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 6259 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-10 23:04:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2022-02-10 23:04:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4956. [2022-02-10 23:04:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4956 states, 4955 states have (on average 3.053279515640767) internal successors, (15129), 4955 states have internal predecessors, (15129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4956 states to 4956 states and 15129 transitions. [2022-02-10 23:04:25,482 INFO L78 Accepts]: Start accepts. Automaton has 4956 states and 15129 transitions. Word has length 74 [2022-02-10 23:04:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:25,482 INFO L470 AbstractCegarLoop]: Abstraction has 4956 states and 15129 transitions. [2022-02-10 23:04:25,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4956 states and 15129 transitions. [2022-02-10 23:04:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:04:25,489 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:25,489 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:04:25,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-10 23:04:25,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-02-10 23:04:25,690 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2122505823, now seen corresponding path program 69 times [2022-02-10 23:04:25,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:25,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681968410] [2022-02-10 23:04:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:25,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:25,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:25,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681968410] [2022-02-10 23:04:25,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681968410] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:25,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119747283] [2022-02-10 23:04:25,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:04:25,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:25,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:25,911 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:25,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 23:04:26,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:04:26,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:26,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:04:26,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:26,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:27,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119747283] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:27,261 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:27,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:04:27,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012984430] [2022-02-10 23:04:27,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:27,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:04:27,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:27,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:04:27,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:04:27,262 INFO L87 Difference]: Start difference. First operand 4956 states and 15129 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:33,888 INFO L93 Difference]: Finished difference Result 8235 states and 23774 transitions. [2022-02-10 23:04:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-02-10 23:04:33,888 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:04:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:33,902 INFO L225 Difference]: With dead ends: 8235 [2022-02-10 23:04:33,902 INFO L226 Difference]: Without dead ends: 7911 [2022-02-10 23:04:33,903 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10814 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2796, Invalid=27654, Unknown=0, NotChecked=0, Total=30450 [2022-02-10 23:04:33,903 INFO L934 BasicCegarLoop]: 332 mSDtfsCounter, 1451 mSDsluCounter, 5476 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:04:33,903 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5512 Invalid, 3218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 23:04:33,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7911 states. [2022-02-10 23:04:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7911 to 4745. [2022-02-10 23:04:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4744 states have (on average 3.0413153456998314) internal successors, (14428), 4744 states have internal predecessors, (14428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 14428 transitions. [2022-02-10 23:04:33,993 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 14428 transitions. Word has length 74 [2022-02-10 23:04:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:33,993 INFO L470 AbstractCegarLoop]: Abstraction has 4745 states and 14428 transitions. [2022-02-10 23:04:33,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 14428 transitions. [2022-02-10 23:04:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:04:34,000 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:34,000 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:04:34,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 23:04:34,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:34,201 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1337103017, now seen corresponding path program 70 times [2022-02-10 23:04:34,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:34,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462163446] [2022-02-10 23:04:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:34,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:34,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462163446] [2022-02-10 23:04:34,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462163446] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:34,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969656792] [2022-02-10 23:04:34,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:04:34,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:34,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:34,453 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:34,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 23:04:34,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:04:34,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:34,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:04:34,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:35,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:35,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969656792] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:35,792 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:35,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:04:35,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135718568] [2022-02-10 23:04:35,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:35,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:04:35,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:04:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1466, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:04:35,793 INFO L87 Difference]: Start difference. First operand 4745 states and 14428 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:42,191 INFO L93 Difference]: Finished difference Result 7744 states and 22450 transitions. [2022-02-10 23:04:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-02-10 23:04:42,191 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:04:42,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:42,204 INFO L225 Difference]: With dead ends: 7744 [2022-02-10 23:04:42,204 INFO L226 Difference]: Without dead ends: 7501 [2022-02-10 23:04:42,206 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9594 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2653, Invalid=24737, Unknown=0, NotChecked=0, Total=27390 [2022-02-10 23:04:42,206 INFO L934 BasicCegarLoop]: 275 mSDtfsCounter, 1171 mSDsluCounter, 5668 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:04:42,206 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 5666 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:04:42,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-02-10 23:04:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 4951. [2022-02-10 23:04:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4950 states have (on average 3.041212121212121) internal successors, (15054), 4950 states have internal predecessors, (15054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 15054 transitions. [2022-02-10 23:04:42,325 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 15054 transitions. Word has length 74 [2022-02-10 23:04:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:42,325 INFO L470 AbstractCegarLoop]: Abstraction has 4951 states and 15054 transitions. [2022-02-10 23:04:42,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 15054 transitions. [2022-02-10 23:04:42,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:04:42,333 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:42,333 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:04:42,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-10 23:04:42,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:42,533 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash -476585623, now seen corresponding path program 71 times [2022-02-10 23:04:42,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:42,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701826237] [2022-02-10 23:04:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:42,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:42,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701826237] [2022-02-10 23:04:42,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701826237] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:42,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227713794] [2022-02-10 23:04:42,787 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:04:42,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:42,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:42,788 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:42,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 23:04:42,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:04:42,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:42,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:04:42,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:43,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:44,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227713794] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:44,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:44,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:04:44,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994909950] [2022-02-10 23:04:44,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:44,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:04:44,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:04:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:04:44,108 INFO L87 Difference]: Start difference. First operand 4951 states and 15054 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:04:54,284 INFO L93 Difference]: Finished difference Result 9912 states and 28532 transitions. [2022-02-10 23:04:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-02-10 23:04:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:04:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:04:54,301 INFO L225 Difference]: With dead ends: 9912 [2022-02-10 23:04:54,301 INFO L226 Difference]: Without dead ends: 9708 [2022-02-10 23:04:54,303 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19618 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=4533, Invalid=45419, Unknown=0, NotChecked=0, Total=49952 [2022-02-10 23:04:54,303 INFO L934 BasicCegarLoop]: 394 mSDtfsCounter, 1340 mSDsluCounter, 8535 mSDsCounter, 0 mSdLazyCounter, 4310 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 8503 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 4310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:04:54,303 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 8503 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 4310 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-10 23:04:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9708 states. [2022-02-10 23:04:54,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9708 to 5027. [2022-02-10 23:04:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5027 states, 5026 states have (on average 3.047950656585754) internal successors, (15319), 5026 states have internal predecessors, (15319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 15319 transitions. [2022-02-10 23:04:54,407 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 15319 transitions. Word has length 74 [2022-02-10 23:04:54,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:04:54,407 INFO L470 AbstractCegarLoop]: Abstraction has 5027 states and 15319 transitions. [2022-02-10 23:04:54,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 15319 transitions. [2022-02-10 23:04:54,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:04:54,414 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:04:54,414 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:04:54,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-10 23:04:54,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:54,615 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:04:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:04:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1150458879, now seen corresponding path program 72 times [2022-02-10 23:04:54,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:04:54,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673412014] [2022-02-10 23:04:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:04:54,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:04:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:04:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:54,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:04:54,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673412014] [2022-02-10 23:04:54,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673412014] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:04:54,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703963412] [2022-02-10 23:04:54,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:04:54,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:04:54,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:04:54,852 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:04:54,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 23:04:54,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:04:54,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:04:54,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:04:54,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:04:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:55,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:04:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:04:56,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703963412] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:04:56,268 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:04:56,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-10 23:04:56,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7915849] [2022-02-10 23:04:56,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:04:56,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 23:04:56,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:04:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 23:04:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:04:56,269 INFO L87 Difference]: Start difference. First operand 5027 states and 15319 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:05,570 INFO L93 Difference]: Finished difference Result 8845 states and 25299 transitions. [2022-02-10 23:05:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-02-10 23:05:05,571 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:05:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:05,619 INFO L225 Difference]: With dead ends: 8845 [2022-02-10 23:05:05,619 INFO L226 Difference]: Without dead ends: 8545 [2022-02-10 23:05:05,620 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15500 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3798, Invalid=37614, Unknown=0, NotChecked=0, Total=41412 [2022-02-10 23:05:05,620 INFO L934 BasicCegarLoop]: 364 mSDtfsCounter, 1369 mSDsluCounter, 7311 mSDsCounter, 0 mSdLazyCounter, 3731 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 7306 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 3731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:05,620 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 7306 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 3731 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-10 23:05:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2022-02-10 23:05:05,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 4983. [2022-02-10 23:05:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4982 states have (on average 3.0497792051384987) internal successors, (15194), 4982 states have internal predecessors, (15194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 15194 transitions. [2022-02-10 23:05:05,704 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 15194 transitions. Word has length 74 [2022-02-10 23:05:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:05,704 INFO L470 AbstractCegarLoop]: Abstraction has 4983 states and 15194 transitions. [2022-02-10 23:05:05,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 15194 transitions. [2022-02-10 23:05:05,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:05:05,711 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:05,711 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:05,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:05,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-02-10 23:05:05,911 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1173322375, now seen corresponding path program 73 times [2022-02-10 23:05:05,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:05,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177204474] [2022-02-10 23:05:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:06,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:06,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177204474] [2022-02-10 23:05:06,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177204474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:06,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191053442] [2022-02-10 23:05:06,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:05:06,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:06,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:06,156 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:06,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 23:05:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:06,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:05:06,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:06,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:07,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191053442] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:07,313 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:07,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:05:07,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723382840] [2022-02-10 23:05:07,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:07,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:05:07,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:05:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:05:07,314 INFO L87 Difference]: Start difference. First operand 4983 states and 15194 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:10,106 INFO L93 Difference]: Finished difference Result 7537 states and 22138 transitions. [2022-02-10 23:05:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 23:05:10,106 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:05:10,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:10,120 INFO L225 Difference]: With dead ends: 7537 [2022-02-10 23:05:10,120 INFO L226 Difference]: Without dead ends: 7435 [2022-02-10 23:05:10,121 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1361, Invalid=10411, Unknown=0, NotChecked=0, Total=11772 [2022-02-10 23:05:10,121 INFO L934 BasicCegarLoop]: 228 mSDtfsCounter, 778 mSDsluCounter, 4310 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:10,121 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 4300 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:05:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2022-02-10 23:05:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 5155. [2022-02-10 23:05:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 3.053744664338378) internal successors, (15739), 5154 states have internal predecessors, (15739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 15739 transitions. [2022-02-10 23:05:10,206 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 15739 transitions. Word has length 74 [2022-02-10 23:05:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:10,206 INFO L470 AbstractCegarLoop]: Abstraction has 5155 states and 15739 transitions. [2022-02-10 23:05:10,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 15739 transitions. [2022-02-10 23:05:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:05:10,213 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:10,213 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:10,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:10,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:10,414 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1152604989, now seen corresponding path program 74 times [2022-02-10 23:05:10,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:10,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129568509] [2022-02-10 23:05:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:10,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:10,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129568509] [2022-02-10 23:05:10,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129568509] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:10,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191551688] [2022-02-10 23:05:10,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:05:10,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:10,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:10,650 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:10,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 23:05:10,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:05:10,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:10,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:05:10,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:11,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:11,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191551688] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:11,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:11,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:05:11,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053443565] [2022-02-10 23:05:11,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:11,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:05:11,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:11,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:05:11,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:05:11,729 INFO L87 Difference]: Start difference. First operand 5155 states and 15739 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:14,481 INFO L93 Difference]: Finished difference Result 7381 states and 21761 transitions. [2022-02-10 23:05:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 23:05:14,481 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:05:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:14,494 INFO L225 Difference]: With dead ends: 7381 [2022-02-10 23:05:14,494 INFO L226 Difference]: Without dead ends: 7279 [2022-02-10 23:05:14,495 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3061 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1201, Invalid=8899, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 23:05:14,495 INFO L934 BasicCegarLoop]: 217 mSDtfsCounter, 873 mSDsluCounter, 3691 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:14,495 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 3724 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:05:14,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7279 states. [2022-02-10 23:05:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7279 to 5191. [2022-02-10 23:05:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 3.0539499036608864) internal successors, (15850), 5190 states have internal predecessors, (15850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 15850 transitions. [2022-02-10 23:05:14,584 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 15850 transitions. Word has length 74 [2022-02-10 23:05:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:14,585 INFO L470 AbstractCegarLoop]: Abstraction has 5191 states and 15850 transitions. [2022-02-10 23:05:14,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 15850 transitions. [2022-02-10 23:05:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:05:14,592 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:14,592 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:14,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-10 23:05:14,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:14,793 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:14,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:14,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1797105751, now seen corresponding path program 75 times [2022-02-10 23:05:14,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:14,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327544406] [2022-02-10 23:05:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:14,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:15,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:15,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327544406] [2022-02-10 23:05:15,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327544406] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:15,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163019376] [2022-02-10 23:05:15,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:05:15,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:15,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:15,009 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:15,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 23:05:15,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:05:15,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:15,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:05:15,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:15,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:16,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163019376] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:16,189 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:16,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:05:16,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145868515] [2022-02-10 23:05:16,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:16,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:05:16,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:16,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:05:16,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:05:16,190 INFO L87 Difference]: Start difference. First operand 5191 states and 15850 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:27,002 INFO L93 Difference]: Finished difference Result 12072 states and 34561 transitions. [2022-02-10 23:05:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-02-10 23:05:27,002 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:05:27,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:27,023 INFO L225 Difference]: With dead ends: 12072 [2022-02-10 23:05:27,023 INFO L226 Difference]: Without dead ends: 11655 [2022-02-10 23:05:27,027 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24045 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=7539, Invalid=54711, Unknown=0, NotChecked=0, Total=62250 [2022-02-10 23:05:27,027 INFO L934 BasicCegarLoop]: 461 mSDtfsCounter, 1864 mSDsluCounter, 8156 mSDsCounter, 0 mSdLazyCounter, 3952 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 8054 SdHoareTripleChecker+Invalid, 4342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:27,027 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 8054 Invalid, 4342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3952 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-10 23:05:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11655 states. [2022-02-10 23:05:27,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11655 to 5495. [2022-02-10 23:05:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5495 states, 5494 states have (on average 3.0633418274481254) internal successors, (16830), 5494 states have internal predecessors, (16830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5495 states to 5495 states and 16830 transitions. [2022-02-10 23:05:27,170 INFO L78 Accepts]: Start accepts. Automaton has 5495 states and 16830 transitions. Word has length 74 [2022-02-10 23:05:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:27,171 INFO L470 AbstractCegarLoop]: Abstraction has 5495 states and 16830 transitions. [2022-02-10 23:05:27,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states and 16830 transitions. [2022-02-10 23:05:27,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:05:27,178 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:27,178 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:27,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:27,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-02-10 23:05:27,379 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:27,379 INFO L85 PathProgramCache]: Analyzing trace with hash 746021723, now seen corresponding path program 76 times [2022-02-10 23:05:27,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:27,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628463447] [2022-02-10 23:05:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:27,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:27,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:27,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628463447] [2022-02-10 23:05:27,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628463447] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:27,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951457961] [2022-02-10 23:05:27,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:05:27,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:27,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:27,601 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:27,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 23:05:27,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:05:27,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:27,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:05:27,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:28,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:29,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951457961] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:29,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:29,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:05:29,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417498110] [2022-02-10 23:05:29,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:29,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:05:29,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:05:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:05:29,015 INFO L87 Difference]: Start difference. First operand 5495 states and 16830 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:40,436 INFO L93 Difference]: Finished difference Result 11938 states and 34498 transitions. [2022-02-10 23:05:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-02-10 23:05:40,436 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:05:40,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:40,456 INFO L225 Difference]: With dead ends: 11938 [2022-02-10 23:05:40,456 INFO L226 Difference]: Without dead ends: 11542 [2022-02-10 23:05:40,459 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19156 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=3949, Invalid=46003, Unknown=0, NotChecked=0, Total=49952 [2022-02-10 23:05:40,459 INFO L934 BasicCegarLoop]: 351 mSDtfsCounter, 1504 mSDsluCounter, 8896 mSDsCounter, 0 mSdLazyCounter, 4586 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 8911 SdHoareTripleChecker+Invalid, 4825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:40,459 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 8911 Invalid, 4825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4586 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-10 23:05:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2022-02-10 23:05:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 6178. [2022-02-10 23:05:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 6177 states have (on average 3.0838594787113487) internal successors, (19049), 6177 states have internal predecessors, (19049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 19049 transitions. [2022-02-10 23:05:40,607 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 19049 transitions. Word has length 74 [2022-02-10 23:05:40,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:40,607 INFO L470 AbstractCegarLoop]: Abstraction has 6178 states and 19049 transitions. [2022-02-10 23:05:40,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 19049 transitions. [2022-02-10 23:05:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:05:40,616 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:40,616 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:40,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:40,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-10 23:05:40,818 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash 72148467, now seen corresponding path program 77 times [2022-02-10 23:05:40,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:40,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134231385] [2022-02-10 23:05:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:40,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:41,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:41,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134231385] [2022-02-10 23:05:41,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134231385] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:41,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944552948] [2022-02-10 23:05:41,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:05:41,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:41,078 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:41,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 23:05:41,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:05:41,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:41,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:05:41,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:41,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:42,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944552948] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:42,536 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:42,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:05:42,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749388556] [2022-02-10 23:05:42,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:42,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:05:42,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:05:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:05:42,537 INFO L87 Difference]: Start difference. First operand 6178 states and 19049 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:52,600 INFO L93 Difference]: Finished difference Result 12476 states and 36433 transitions. [2022-02-10 23:05:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-02-10 23:05:52,600 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:05:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:52,623 INFO L225 Difference]: With dead ends: 12476 [2022-02-10 23:05:52,623 INFO L226 Difference]: Without dead ends: 11945 [2022-02-10 23:05:52,625 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17076 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3982, Invalid=41174, Unknown=0, NotChecked=0, Total=45156 [2022-02-10 23:05:52,625 INFO L934 BasicCegarLoop]: 306 mSDtfsCounter, 1507 mSDsluCounter, 6151 mSDsCounter, 0 mSdLazyCounter, 3419 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 3419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:52,625 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 6175 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 3419 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-10 23:05:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11945 states. [2022-02-10 23:05:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11945 to 6794. [2022-02-10 23:05:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6794 states, 6793 states have (on average 3.103636095981157) internal successors, (21083), 6793 states have internal predecessors, (21083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6794 states to 6794 states and 21083 transitions. [2022-02-10 23:05:52,765 INFO L78 Accepts]: Start accepts. Automaton has 6794 states and 21083 transitions. Word has length 74 [2022-02-10 23:05:52,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:52,765 INFO L470 AbstractCegarLoop]: Abstraction has 6794 states and 21083 transitions. [2022-02-10 23:05:52,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 6794 states and 21083 transitions. [2022-02-10 23:05:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:05:52,775 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:52,775 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:52,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:52,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:52,976 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:05:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1300662113, now seen corresponding path program 78 times [2022-02-10 23:05:52,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:52,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888465647] [2022-02-10 23:05:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:52,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:53,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:53,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888465647] [2022-02-10 23:05:53,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888465647] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:53,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139706025] [2022-02-10 23:05:53,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:05:53,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:53,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:53,206 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:05:53,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 23:05:53,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:05:53,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:53,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:05:53,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:53,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:54,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139706025] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:54,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:54,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:05:54,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484257554] [2022-02-10 23:05:54,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:54,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:05:54,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:54,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:05:54,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:05:54,583 INFO L87 Difference]: Start difference. First operand 6794 states and 21083 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:04,298 INFO L93 Difference]: Finished difference Result 12284 states and 35865 transitions. [2022-02-10 23:06:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-02-10 23:06:04,298 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:06:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:04,326 INFO L225 Difference]: With dead ends: 12284 [2022-02-10 23:06:04,327 INFO L226 Difference]: Without dead ends: 11858 [2022-02-10 23:06:04,330 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17311 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=3918, Invalid=42092, Unknown=0, NotChecked=0, Total=46010 [2022-02-10 23:06:04,330 INFO L934 BasicCegarLoop]: 314 mSDtfsCounter, 1358 mSDsluCounter, 6121 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:04,330 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1358 Valid, 6177 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 23:06:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11858 states. [2022-02-10 23:06:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11858 to 6495. [2022-02-10 23:06:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6495 states, 6494 states have (on average 3.092700954727441) internal successors, (20084), 6494 states have internal predecessors, (20084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6495 states to 6495 states and 20084 transitions. [2022-02-10 23:06:04,481 INFO L78 Accepts]: Start accepts. Automaton has 6495 states and 20084 transitions. Word has length 74 [2022-02-10 23:06:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:04,481 INFO L470 AbstractCegarLoop]: Abstraction has 6495 states and 20084 transitions. [2022-02-10 23:06:04,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 6495 states and 20084 transitions. [2022-02-10 23:06:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:06:04,490 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:04,491 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:06:04,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:04,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:04,691 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:04,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:04,692 INFO L85 PathProgramCache]: Analyzing trace with hash 574079627, now seen corresponding path program 79 times [2022-02-10 23:06:04,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:04,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142572697] [2022-02-10 23:06:04,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:04,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:04,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:04,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142572697] [2022-02-10 23:06:04,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142572697] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:04,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718173585] [2022-02-10 23:06:04,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:06:04,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:04,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:04,903 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:04,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 23:06:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:04,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:06:04,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:05,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:06,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718173585] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:06,167 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:06,167 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:06:06,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409264836] [2022-02-10 23:06:06,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:06,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:06:06,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:06,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:06:06,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:06:06,168 INFO L87 Difference]: Start difference. First operand 6495 states and 20084 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:14,241 INFO L93 Difference]: Finished difference Result 11398 states and 34007 transitions. [2022-02-10 23:06:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-02-10 23:06:14,241 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:06:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:14,262 INFO L225 Difference]: With dead ends: 11398 [2022-02-10 23:06:14,262 INFO L226 Difference]: Without dead ends: 11185 [2022-02-10 23:06:14,264 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13254 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3326, Invalid=32964, Unknown=0, NotChecked=0, Total=36290 [2022-02-10 23:06:14,264 INFO L934 BasicCegarLoop]: 268 mSDtfsCounter, 1054 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:14,264 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 6578 Invalid, 3340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3196 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-10 23:06:14,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11185 states. [2022-02-10 23:06:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11185 to 6991. [2022-02-10 23:06:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6990 states have (on average 3.0907010014306153) internal successors, (21604), 6990 states have internal predecessors, (21604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 21604 transitions. [2022-02-10 23:06:14,407 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 21604 transitions. Word has length 74 [2022-02-10 23:06:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:14,407 INFO L470 AbstractCegarLoop]: Abstraction has 6991 states and 21604 transitions. [2022-02-10 23:06:14,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 21604 transitions. [2022-02-10 23:06:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:06:14,458 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:14,458 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:06:14,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:14,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-02-10 23:06:14,659 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1239609013, now seen corresponding path program 80 times [2022-02-10 23:06:14,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:14,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401098875] [2022-02-10 23:06:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:14,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:14,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401098875] [2022-02-10 23:06:14,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401098875] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:14,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293118365] [2022-02-10 23:06:14,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:06:14,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:14,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:14,877 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:14,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 23:06:14,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:06:14,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:14,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:06:14,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:15,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:16,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293118365] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:16,173 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:16,173 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:06:16,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558395405] [2022-02-10 23:06:16,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:16,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:06:16,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:16,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:06:16,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:06:16,174 INFO L87 Difference]: Start difference. First operand 6991 states and 21604 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:28,543 INFO L93 Difference]: Finished difference Result 14406 states and 42711 transitions. [2022-02-10 23:06:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-02-10 23:06:28,543 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:06:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:28,572 INFO L225 Difference]: With dead ends: 14406 [2022-02-10 23:06:28,572 INFO L226 Difference]: Without dead ends: 14202 [2022-02-10 23:06:28,575 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23037 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=5051, Invalid=53755, Unknown=0, NotChecked=0, Total=58806 [2022-02-10 23:06:28,575 INFO L934 BasicCegarLoop]: 396 mSDtfsCounter, 1422 mSDsluCounter, 7274 mSDsCounter, 0 mSdLazyCounter, 3969 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 7348 SdHoareTripleChecker+Invalid, 4218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 3969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:28,575 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 7348 Invalid, 4218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 3969 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 23:06:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14202 states. [2022-02-10 23:06:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14202 to 7319. [2022-02-10 23:06:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 7318 states have (on average 3.114785460508336) internal successors, (22794), 7318 states have internal predecessors, (22794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 22794 transitions. [2022-02-10 23:06:28,735 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 22794 transitions. Word has length 74 [2022-02-10 23:06:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:28,735 INFO L470 AbstractCegarLoop]: Abstraction has 7319 states and 22794 transitions. [2022-02-10 23:06:28,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 22794 transitions. [2022-02-10 23:06:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:06:28,775 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:28,775 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:06:28,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-10 23:06:28,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:28,975 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482269, now seen corresponding path program 81 times [2022-02-10 23:06:28,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:28,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726428883] [2022-02-10 23:06:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:29,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:29,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726428883] [2022-02-10 23:06:29,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726428883] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:29,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102989962] [2022-02-10 23:06:29,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:06:29,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:29,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:29,198 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:29,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 23:06:29,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:06:29,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:29,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 23:06:29,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:30,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:30,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102989962] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:30,934 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:30,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-02-10 23:06:30,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297904107] [2022-02-10 23:06:30,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:30,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 23:06:30,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:30,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 23:06:30,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 23:06:30,935 INFO L87 Difference]: Start difference. First operand 7319 states and 22794 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:41,548 INFO L93 Difference]: Finished difference Result 12684 states and 37596 transitions. [2022-02-10 23:06:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-02-10 23:06:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:06:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:41,577 INFO L225 Difference]: With dead ends: 12684 [2022-02-10 23:06:41,577 INFO L226 Difference]: Without dead ends: 12501 [2022-02-10 23:06:41,579 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15629 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=4664, Invalid=38808, Unknown=0, NotChecked=0, Total=43472 [2022-02-10 23:06:41,580 INFO L934 BasicCegarLoop]: 237 mSDtfsCounter, 1747 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 3352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:41,580 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 5476 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-10 23:06:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12501 states. [2022-02-10 23:06:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12501 to 7303. [2022-02-10 23:06:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7302 states have (on average 3.115036976170912) internal successors, (22746), 7302 states have internal predecessors, (22746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 22746 transitions. [2022-02-10 23:06:41,728 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 22746 transitions. Word has length 74 [2022-02-10 23:06:41,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:41,728 INFO L470 AbstractCegarLoop]: Abstraction has 7303 states and 22746 transitions. [2022-02-10 23:06:41,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 22746 transitions. [2022-02-10 23:06:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:06:41,739 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:41,739 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:06:41,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:41,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:41,940 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:41,940 INFO L85 PathProgramCache]: Analyzing trace with hash 746662277, now seen corresponding path program 82 times [2022-02-10 23:06:41,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:41,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847843806] [2022-02-10 23:06:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:42,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:42,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847843806] [2022-02-10 23:06:42,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847843806] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:42,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129210433] [2022-02-10 23:06:42,160 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:06:42,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:42,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:42,161 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:42,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 23:06:42,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:06:42,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:42,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:06:42,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:42,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:43,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129210433] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:43,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:43,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:06:43,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462508280] [2022-02-10 23:06:43,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:43,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:06:43,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:06:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:06:43,439 INFO L87 Difference]: Start difference. First operand 7303 states and 22746 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:06:52,491 INFO L93 Difference]: Finished difference Result 12908 states and 38826 transitions. [2022-02-10 23:06:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-02-10 23:06:52,491 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:06:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:06:52,516 INFO L225 Difference]: With dead ends: 12908 [2022-02-10 23:06:52,517 INFO L226 Difference]: Without dead ends: 12509 [2022-02-10 23:06:52,519 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17130 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=4124, Invalid=41458, Unknown=0, NotChecked=0, Total=45582 [2022-02-10 23:06:52,519 INFO L934 BasicCegarLoop]: 361 mSDtfsCounter, 1197 mSDsluCounter, 7347 mSDsCounter, 0 mSdLazyCounter, 4002 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 4002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:06:52,519 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 7333 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 4002 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 23:06:52,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12509 states. [2022-02-10 23:06:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12509 to 7875. [2022-02-10 23:06:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7875 states, 7874 states have (on average 3.132715265430531) internal successors, (24667), 7874 states have internal predecessors, (24667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7875 states to 7875 states and 24667 transitions. [2022-02-10 23:06:52,669 INFO L78 Accepts]: Start accepts. Automaton has 7875 states and 24667 transitions. Word has length 74 [2022-02-10 23:06:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:06:52,669 INFO L470 AbstractCegarLoop]: Abstraction has 7875 states and 24667 transitions. [2022-02-10 23:06:52,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:06:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7875 states and 24667 transitions. [2022-02-10 23:06:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:06:52,681 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:06:52,681 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:06:52,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-10 23:06:52,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-02-10 23:06:52,882 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:06:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:06:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1031249583, now seen corresponding path program 83 times [2022-02-10 23:06:52,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:06:52,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956314505] [2022-02-10 23:06:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:06:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:06:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:06:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:53,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:06:53,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956314505] [2022-02-10 23:06:53,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956314505] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:06:53,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117230141] [2022-02-10 23:06:53,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:06:53,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:06:53,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:06:53,104 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:06:53,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 23:06:53,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:06:53,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:06:53,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:06:53,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:06:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:53,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:06:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:06:54,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117230141] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:06:54,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:06:54,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:06:54,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228997102] [2022-02-10 23:06:54,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:06:54,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:06:54,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:06:54,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:06:54,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:06:54,406 INFO L87 Difference]: Start difference. First operand 7875 states and 24667 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:02,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:02,683 INFO L93 Difference]: Finished difference Result 13497 states and 40619 transitions. [2022-02-10 23:07:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-02-10 23:07:02,683 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:07:02,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:02,708 INFO L225 Difference]: With dead ends: 13497 [2022-02-10 23:07:02,709 INFO L226 Difference]: Without dead ends: 12972 [2022-02-10 23:07:02,710 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13033 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3158, Invalid=32752, Unknown=0, NotChecked=0, Total=35910 [2022-02-10 23:07:02,710 INFO L934 BasicCegarLoop]: 339 mSDtfsCounter, 1193 mSDsluCounter, 8077 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 7996 SdHoareTripleChecker+Invalid, 4626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:02,711 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 7996 Invalid, 4626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-10 23:07:02,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12972 states. [2022-02-10 23:07:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12972 to 8063. [2022-02-10 23:07:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8063 states, 8062 states have (on average 3.129248325477549) internal successors, (25228), 8062 states have internal predecessors, (25228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8063 states to 8063 states and 25228 transitions. [2022-02-10 23:07:02,872 INFO L78 Accepts]: Start accepts. Automaton has 8063 states and 25228 transitions. Word has length 74 [2022-02-10 23:07:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:02,872 INFO L470 AbstractCegarLoop]: Abstraction has 8063 states and 25228 transitions. [2022-02-10 23:07:02,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:02,873 INFO L276 IsEmpty]: Start isEmpty. Operand 8063 states and 25228 transitions. [2022-02-10 23:07:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:07:02,885 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:02,885 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:07:02,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-10 23:07:03,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:03,086 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1668906567, now seen corresponding path program 84 times [2022-02-10 23:07:03,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:03,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90822854] [2022-02-10 23:07:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:03,288 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:03,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90822854] [2022-02-10 23:07:03,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90822854] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:03,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280207395] [2022-02-10 23:07:03,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:07:03,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:03,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:03,290 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:03,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 23:07:03,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:07:03,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:03,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:07:03,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:03,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:04,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280207395] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:04,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:04,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-10 23:07:04,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661197393] [2022-02-10 23:07:04,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:04,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 23:07:04,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 23:07:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 23:07:04,398 INFO L87 Difference]: Start difference. First operand 8063 states and 25228 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:07,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:07,344 INFO L93 Difference]: Finished difference Result 11245 states and 33982 transitions. [2022-02-10 23:07:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 23:07:07,344 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:07:07,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:07,365 INFO L225 Difference]: With dead ends: 11245 [2022-02-10 23:07:07,365 INFO L226 Difference]: Without dead ends: 11143 [2022-02-10 23:07:07,366 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1421, Invalid=10351, Unknown=0, NotChecked=0, Total=11772 [2022-02-10 23:07:07,366 INFO L934 BasicCegarLoop]: 206 mSDtfsCounter, 778 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 3605 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:07,367 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 3605 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:07:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11143 states. [2022-02-10 23:07:07,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11143 to 8127. [2022-02-10 23:07:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8127 states, 8126 states have (on average 3.1316761014029044) internal successors, (25448), 8126 states have internal predecessors, (25448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 25448 transitions. [2022-02-10 23:07:07,563 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 25448 transitions. Word has length 74 [2022-02-10 23:07:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:07,563 INFO L470 AbstractCegarLoop]: Abstraction has 8127 states and 25448 transitions. [2022-02-10 23:07:07,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 25448 transitions. [2022-02-10 23:07:07,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:07:07,575 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:07,575 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:07:07,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-02-10 23:07:07,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:07,776 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1648189181, now seen corresponding path program 85 times [2022-02-10 23:07:07,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:07,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342074224] [2022-02-10 23:07:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:07,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:07,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:07,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342074224] [2022-02-10 23:07:07,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342074224] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:07,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180028550] [2022-02-10 23:07:07,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:07:07,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:07,976 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:07,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-10 23:07:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:08,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:07:08,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:08,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:09,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180028550] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:09,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:09,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:07:09,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860913095] [2022-02-10 23:07:09,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:09,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:07:09,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:07:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:07:09,106 INFO L87 Difference]: Start difference. First operand 8127 states and 25448 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:12,643 INFO L93 Difference]: Finished difference Result 11089 states and 33605 transitions. [2022-02-10 23:07:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 23:07:12,643 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:07:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:12,663 INFO L225 Difference]: With dead ends: 11089 [2022-02-10 23:07:12,663 INFO L226 Difference]: Without dead ends: 10987 [2022-02-10 23:07:12,664 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3168 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1322, Invalid=8980, Unknown=0, NotChecked=0, Total=10302 [2022-02-10 23:07:12,664 INFO L934 BasicCegarLoop]: 197 mSDtfsCounter, 806 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:12,664 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 3280 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:07:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2022-02-10 23:07:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 8147. [2022-02-10 23:07:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8147 states, 8146 states have (on average 3.132212128652099) internal successors, (25515), 8146 states have internal predecessors, (25515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8147 states to 8147 states and 25515 transitions. [2022-02-10 23:07:12,812 INFO L78 Accepts]: Start accepts. Automaton has 8147 states and 25515 transitions. Word has length 74 [2022-02-10 23:07:12,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:12,812 INFO L470 AbstractCegarLoop]: Abstraction has 8147 states and 25515 transitions. [2022-02-10 23:07:12,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:12,812 INFO L276 IsEmpty]: Start isEmpty. Operand 8147 states and 25515 transitions. [2022-02-10 23:07:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:07:12,824 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:12,824 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:07:12,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-10 23:07:13,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-02-10 23:07:13,025 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:13,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2002277353, now seen corresponding path program 86 times [2022-02-10 23:07:13,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:13,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953485168] [2022-02-10 23:07:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:13,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:13,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953485168] [2022-02-10 23:07:13,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953485168] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:13,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989290584] [2022-02-10 23:07:13,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:07:13,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:13,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:13,267 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:13,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-10 23:07:13,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:07:13,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:13,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:07:13,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:13,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:14,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989290584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:14,428 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:14,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:07:14,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69284460] [2022-02-10 23:07:14,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:14,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:07:14,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:14,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:07:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:07:14,429 INFO L87 Difference]: Start difference. First operand 8147 states and 25515 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:25,876 INFO L93 Difference]: Finished difference Result 16319 states and 48164 transitions. [2022-02-10 23:07:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-02-10 23:07:25,876 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:07:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:25,908 INFO L225 Difference]: With dead ends: 16319 [2022-02-10 23:07:25,908 INFO L226 Difference]: Without dead ends: 15821 [2022-02-10 23:07:25,910 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24178 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=7498, Invalid=54752, Unknown=0, NotChecked=0, Total=62250 [2022-02-10 23:07:25,911 INFO L934 BasicCegarLoop]: 478 mSDtfsCounter, 1721 mSDsluCounter, 9081 mSDsCounter, 0 mSdLazyCounter, 4545 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 8883 SdHoareTripleChecker+Invalid, 4893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 4545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:25,911 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 8883 Invalid, 4893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 4545 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-10 23:07:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15821 states. [2022-02-10 23:07:26,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15821 to 8299. [2022-02-10 23:07:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8299 states, 8298 states have (on average 3.130995420583273) internal successors, (25981), 8298 states have internal predecessors, (25981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 25981 transitions. [2022-02-10 23:07:26,092 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 25981 transitions. Word has length 74 [2022-02-10 23:07:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:26,092 INFO L470 AbstractCegarLoop]: Abstraction has 8299 states and 25981 transitions. [2022-02-10 23:07:26,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:26,092 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 25981 transitions. [2022-02-10 23:07:26,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:07:26,104 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:26,104 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:07:26,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-02-10 23:07:26,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:26,305 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash 250437531, now seen corresponding path program 87 times [2022-02-10 23:07:26,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:26,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862087603] [2022-02-10 23:07:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:26,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:26,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:26,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862087603] [2022-02-10 23:07:26,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862087603] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:26,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628077221] [2022-02-10 23:07:26,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:07:26,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:26,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:26,530 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:26,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-10 23:07:26,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:07:26,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:26,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-10 23:07:26,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:27,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:28,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628077221] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:28,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:28,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 48 [2022-02-10 23:07:28,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119085179] [2022-02-10 23:07:28,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:28,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 23:07:28,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:28,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 23:07:28,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:07:28,741 INFO L87 Difference]: Start difference. First operand 8299 states and 25981 transitions. Second operand has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:35,824 INFO L93 Difference]: Finished difference Result 13523 states and 41007 transitions. [2022-02-10 23:07:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-10 23:07:35,825 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:07:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:35,852 INFO L225 Difference]: With dead ends: 13523 [2022-02-10 23:07:35,852 INFO L226 Difference]: Without dead ends: 13421 [2022-02-10 23:07:35,852 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7512 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2252, Invalid=20398, Unknown=0, NotChecked=0, Total=22650 [2022-02-10 23:07:35,853 INFO L934 BasicCegarLoop]: 221 mSDtfsCounter, 1584 mSDsluCounter, 4037 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 4047 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:35,853 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 4047 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:07:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2022-02-10 23:07:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 8371. [2022-02-10 23:07:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8371 states, 8370 states have (on average 3.131063321385902) internal successors, (26207), 8370 states have internal predecessors, (26207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 26207 transitions. [2022-02-10 23:07:36,006 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 26207 transitions. Word has length 74 [2022-02-10 23:07:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:36,006 INFO L470 AbstractCegarLoop]: Abstraction has 8371 states and 26207 transitions. [2022-02-10 23:07:36,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 26207 transitions. [2022-02-10 23:07:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:07:36,019 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:36,019 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:07:36,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-10 23:07:36,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:36,220 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1384385219, now seen corresponding path program 88 times [2022-02-10 23:07:36,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:36,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891916656] [2022-02-10 23:07:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:36,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:36,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891916656] [2022-02-10 23:07:36,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891916656] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:36,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387575906] [2022-02-10 23:07:36,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:07:36,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:36,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:36,443 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:36,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-10 23:07:36,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:07:36,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:36,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:07:36,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:37,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:37,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387575906] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:37,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:37,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:07:37,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432554580] [2022-02-10 23:07:37,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:37,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:07:37,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:07:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1324, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:07:37,917 INFO L87 Difference]: Start difference. First operand 8371 states and 26207 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:46,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:46,346 INFO L93 Difference]: Finished difference Result 14161 states and 42507 transitions. [2022-02-10 23:07:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-10 23:07:46,346 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:07:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:46,372 INFO L225 Difference]: With dead ends: 14161 [2022-02-10 23:07:46,372 INFO L226 Difference]: Without dead ends: 14008 [2022-02-10 23:07:46,374 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11407 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2992, Invalid=28514, Unknown=0, NotChecked=0, Total=31506 [2022-02-10 23:07:46,374 INFO L934 BasicCegarLoop]: 284 mSDtfsCounter, 1138 mSDsluCounter, 5014 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:46,374 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 5068 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 23:07:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14008 states. [2022-02-10 23:07:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14008 to 8775. [2022-02-10 23:07:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8775 states, 8774 states have (on average 3.1185320264417595) internal successors, (27362), 8774 states have internal predecessors, (27362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8775 states to 8775 states and 27362 transitions. [2022-02-10 23:07:46,540 INFO L78 Accepts]: Start accepts. Automaton has 8775 states and 27362 transitions. Word has length 74 [2022-02-10 23:07:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:46,540 INFO L470 AbstractCegarLoop]: Abstraction has 8775 states and 27362 transitions. [2022-02-10 23:07:46,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8775 states and 27362 transitions. [2022-02-10 23:07:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:07:46,553 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:46,553 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:07:46,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-10 23:07:46,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:46,755 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -270174689, now seen corresponding path program 89 times [2022-02-10 23:07:46,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:46,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462708954] [2022-02-10 23:07:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:47,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:47,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462708954] [2022-02-10 23:07:47,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462708954] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:47,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792165830] [2022-02-10 23:07:47,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:07:47,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:47,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:47,011 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:47,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-10 23:07:47,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:07:47,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:47,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:07:47,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:47,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:48,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792165830] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:48,129 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:48,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:07:48,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033338892] [2022-02-10 23:07:48,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:48,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:07:48,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:07:48,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:07:48,130 INFO L87 Difference]: Start difference. First operand 8775 states and 27362 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:07:52,333 INFO L93 Difference]: Finished difference Result 12607 states and 37881 transitions. [2022-02-10 23:07:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-10 23:07:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:07:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:07:52,358 INFO L225 Difference]: With dead ends: 12607 [2022-02-10 23:07:52,358 INFO L226 Difference]: Without dead ends: 12133 [2022-02-10 23:07:52,359 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2533, Invalid=16099, Unknown=0, NotChecked=0, Total=18632 [2022-02-10 23:07:52,360 INFO L934 BasicCegarLoop]: 279 mSDtfsCounter, 1593 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 5037 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:07:52,360 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1593 Valid, 5037 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 23:07:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2022-02-10 23:07:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 9259. [2022-02-10 23:07:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9259 states, 9258 states have (on average 3.113091380427738) internal successors, (28821), 9258 states have internal predecessors, (28821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9259 states to 9259 states and 28821 transitions. [2022-02-10 23:07:52,582 INFO L78 Accepts]: Start accepts. Automaton has 9259 states and 28821 transitions. Word has length 74 [2022-02-10 23:07:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:07:52,582 INFO L470 AbstractCegarLoop]: Abstraction has 9259 states and 28821 transitions. [2022-02-10 23:07:52,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:07:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 9259 states and 28821 transitions. [2022-02-10 23:07:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:07:52,596 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:07:52,596 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:07:52,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-02-10 23:07:52,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2022-02-10 23:07:52,796 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:07:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:07:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1690876699, now seen corresponding path program 90 times [2022-02-10 23:07:52,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:07:52,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712047744] [2022-02-10 23:07:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:07:52,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:07:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:07:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:53,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:07:53,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712047744] [2022-02-10 23:07:53,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712047744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:07:53,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404006560] [2022-02-10 23:07:53,001 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:07:53,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:07:53,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:07:53,002 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:07:53,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-10 23:07:53,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:07:53,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:07:53,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:07:53,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:07:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:53,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:07:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:07:54,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404006560] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:07:54,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:07:54,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:07:54,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191776555] [2022-02-10 23:07:54,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:07:54,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:07:54,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:07:54,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:07:54,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:07:54,150 INFO L87 Difference]: Start difference. First operand 9259 states and 28821 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:00,860 INFO L93 Difference]: Finished difference Result 14690 states and 43638 transitions. [2022-02-10 23:08:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-02-10 23:08:00,860 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:08:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:00,889 INFO L225 Difference]: With dead ends: 14690 [2022-02-10 23:08:00,889 INFO L226 Difference]: Without dead ends: 14486 [2022-02-10 23:08:00,891 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12272 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3398, Invalid=29908, Unknown=0, NotChecked=0, Total=33306 [2022-02-10 23:08:00,891 INFO L934 BasicCegarLoop]: 324 mSDtfsCounter, 1389 mSDsluCounter, 5348 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 5448 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:00,891 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 5448 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:08:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14486 states. [2022-02-10 23:08:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14486 to 9395. [2022-02-10 23:08:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9395 states, 9394 states have (on average 3.1129444326165636) internal successors, (29243), 9394 states have internal predecessors, (29243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9395 states to 9395 states and 29243 transitions. [2022-02-10 23:08:01,085 INFO L78 Accepts]: Start accepts. Automaton has 9395 states and 29243 transitions. Word has length 74 [2022-02-10 23:08:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:01,085 INFO L470 AbstractCegarLoop]: Abstraction has 9395 states and 29243 transitions. [2022-02-10 23:08:01,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9395 states and 29243 transitions. [2022-02-10 23:08:01,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:08:01,099 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:01,099 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:08:01,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:01,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:01,301 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:01,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1936259769, now seen corresponding path program 91 times [2022-02-10 23:08:01,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:01,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114109357] [2022-02-10 23:08:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:01,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:01,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114109357] [2022-02-10 23:08:01,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114109357] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:01,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821429117] [2022-02-10 23:08:01,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:08:01,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:01,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:01,500 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:01,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-10 23:08:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:01,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:08:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:02,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:02,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821429117] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:02,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:02,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-10 23:08:02,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647523591] [2022-02-10 23:08:02,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:02,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 23:08:02,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:02,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 23:08:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 23:08:02,594 INFO L87 Difference]: Start difference. First operand 9395 states and 29243 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:04,430 INFO L93 Difference]: Finished difference Result 12355 states and 37524 transitions. [2022-02-10 23:08:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-10 23:08:04,430 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:08:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:04,454 INFO L225 Difference]: With dead ends: 12355 [2022-02-10 23:08:04,454 INFO L226 Difference]: Without dead ends: 12253 [2022-02-10 23:08:04,455 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2201 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=839, Invalid=6643, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 23:08:04,455 INFO L934 BasicCegarLoop]: 195 mSDtfsCounter, 652 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:04,456 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 3691 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:08:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12253 states. [2022-02-10 23:08:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12253 to 9455. [2022-02-10 23:08:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9455 states, 9454 states have (on average 3.1085254918552994) internal successors, (29388), 9454 states have internal predecessors, (29388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 29388 transitions. [2022-02-10 23:08:04,653 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 29388 transitions. Word has length 74 [2022-02-10 23:08:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:04,653 INFO L470 AbstractCegarLoop]: Abstraction has 9455 states and 29388 transitions. [2022-02-10 23:08:04,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 29388 transitions. [2022-02-10 23:08:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:08:04,666 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:04,666 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:08:04,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:04,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:04,867 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:04,868 INFO L85 PathProgramCache]: Analyzing trace with hash -525424113, now seen corresponding path program 92 times [2022-02-10 23:08:04,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:04,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085412755] [2022-02-10 23:08:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:04,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:05,086 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:05,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085412755] [2022-02-10 23:08:05,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085412755] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:05,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751123257] [2022-02-10 23:08:05,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:08:05,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:05,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:05,087 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:05,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-10 23:08:05,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:08:05,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:05,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:08:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:05,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:06,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751123257] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:06,154 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:06,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:08:06,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772956429] [2022-02-10 23:08:06,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:06,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:08:06,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:06,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:08:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:08:06,155 INFO L87 Difference]: Start difference. First operand 9455 states and 29388 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:09,028 INFO L93 Difference]: Finished difference Result 12732 states and 38411 transitions. [2022-02-10 23:08:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-10 23:08:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:08:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:09,055 INFO L225 Difference]: With dead ends: 12732 [2022-02-10 23:08:09,055 INFO L226 Difference]: Without dead ends: 12579 [2022-02-10 23:08:09,056 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3656 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1364, Invalid=10408, Unknown=0, NotChecked=0, Total=11772 [2022-02-10 23:08:09,056 INFO L934 BasicCegarLoop]: 190 mSDtfsCounter, 807 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:09,057 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 3941 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:08:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12579 states. [2022-02-10 23:08:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12579 to 9711. [2022-02-10 23:08:09,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9711 states, 9710 states have (on average 3.1159629248197733) internal successors, (30256), 9710 states have internal predecessors, (30256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9711 states to 9711 states and 30256 transitions. [2022-02-10 23:08:09,245 INFO L78 Accepts]: Start accepts. Automaton has 9711 states and 30256 transitions. Word has length 74 [2022-02-10 23:08:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:09,246 INFO L470 AbstractCegarLoop]: Abstraction has 9711 states and 30256 transitions. [2022-02-10 23:08:09,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 9711 states and 30256 transitions. [2022-02-10 23:08:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:08:09,260 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:09,261 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:08:09,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-10 23:08:09,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:09,461 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:09,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -504706727, now seen corresponding path program 93 times [2022-02-10 23:08:09,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:09,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721274924] [2022-02-10 23:08:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:09,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:09,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721274924] [2022-02-10 23:08:09,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721274924] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:09,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356239364] [2022-02-10 23:08:09,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:08:09,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:09,662 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:09,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-10 23:08:09,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:08:09,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:09,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:08:09,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:10,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:10,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356239364] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:10,843 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:10,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:08:10,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294266875] [2022-02-10 23:08:10,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:10,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:08:10,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:08:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:08:10,844 INFO L87 Difference]: Start difference. First operand 9711 states and 30256 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:14,081 INFO L93 Difference]: Finished difference Result 12733 states and 38466 transitions. [2022-02-10 23:08:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 23:08:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:08:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:14,103 INFO L225 Difference]: With dead ends: 12733 [2022-02-10 23:08:14,103 INFO L226 Difference]: Without dead ends: 12631 [2022-02-10 23:08:14,104 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1118, Invalid=8194, Unknown=0, NotChecked=0, Total=9312 [2022-02-10 23:08:14,104 INFO L934 BasicCegarLoop]: 197 mSDtfsCounter, 850 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:14,104 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 3096 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:08:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12631 states. [2022-02-10 23:08:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12631 to 9727. [2022-02-10 23:08:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9727 states, 9726 states have (on average 3.1161834258688055) internal successors, (30308), 9726 states have internal predecessors, (30308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:14,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9727 states to 9727 states and 30308 transitions. [2022-02-10 23:08:14,262 INFO L78 Accepts]: Start accepts. Automaton has 9727 states and 30308 transitions. Word has length 74 [2022-02-10 23:08:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:14,262 INFO L470 AbstractCegarLoop]: Abstraction has 9727 states and 30308 transitions. [2022-02-10 23:08:14,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 9727 states and 30308 transitions. [2022-02-10 23:08:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:08:14,276 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:14,276 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:08:14,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:14,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:14,477 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1149207489, now seen corresponding path program 94 times [2022-02-10 23:08:14,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:14,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327250852] [2022-02-10 23:08:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:14,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:14,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:14,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327250852] [2022-02-10 23:08:14,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327250852] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:14,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941266680] [2022-02-10 23:08:14,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:08:14,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:14,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:14,713 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:14,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-10 23:08:14,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:08:14,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:14,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:08:14,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:15,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:15,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941266680] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:15,810 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:15,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:08:15,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008657420] [2022-02-10 23:08:15,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:15,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:08:15,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:15,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:08:15,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:08:15,811 INFO L87 Difference]: Start difference. First operand 9727 states and 30308 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:26,513 INFO L93 Difference]: Finished difference Result 17969 states and 52462 transitions. [2022-02-10 23:08:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-02-10 23:08:26,514 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:08:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:26,550 INFO L225 Difference]: With dead ends: 17969 [2022-02-10 23:08:26,550 INFO L226 Difference]: Without dead ends: 17450 [2022-02-10 23:08:26,553 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24669 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=8239, Invalid=55517, Unknown=0, NotChecked=0, Total=63756 [2022-02-10 23:08:26,553 INFO L934 BasicCegarLoop]: 424 mSDtfsCounter, 2179 mSDsluCounter, 7176 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 7191 SdHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:26,553 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2179 Valid, 7191 Invalid, 4120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 23:08:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17450 states. [2022-02-10 23:08:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17450 to 10119. [2022-02-10 23:08:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10119 states, 10118 states have (on average 3.1241352045858863) internal successors, (31610), 10118 states have internal predecessors, (31610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 31610 transitions. [2022-02-10 23:08:26,763 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 31610 transitions. Word has length 74 [2022-02-10 23:08:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:26,763 INFO L470 AbstractCegarLoop]: Abstraction has 10119 states and 31610 transitions. [2022-02-10 23:08:26,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 31610 transitions. [2022-02-10 23:08:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:08:26,778 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:26,778 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:08:26,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-10 23:08:26,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-02-10 23:08:26,978 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:26,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1263759537, now seen corresponding path program 95 times [2022-02-10 23:08:26,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:26,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135833537] [2022-02-10 23:08:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:26,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:27,195 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:27,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135833537] [2022-02-10 23:08:27,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135833537] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:27,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803015183] [2022-02-10 23:08:27,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:08:27,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:27,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:27,196 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:27,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-10 23:08:27,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:08:27,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:27,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:08:27,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:27,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:28,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803015183] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:28,651 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:28,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:08:28,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713189100] [2022-02-10 23:08:28,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:28,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:08:28,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:08:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:08:28,652 INFO L87 Difference]: Start difference. First operand 10119 states and 31610 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:34,122 INFO L93 Difference]: Finished difference Result 14283 states and 43308 transitions. [2022-02-10 23:08:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-10 23:08:34,122 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:08:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:34,152 INFO L225 Difference]: With dead ends: 14283 [2022-02-10 23:08:34,152 INFO L226 Difference]: Without dead ends: 14004 [2022-02-10 23:08:34,153 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6502 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1744, Invalid=17996, Unknown=0, NotChecked=0, Total=19740 [2022-02-10 23:08:34,154 INFO L934 BasicCegarLoop]: 241 mSDtfsCounter, 902 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:34,154 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 4693 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:08:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14004 states. [2022-02-10 23:08:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14004 to 11151. [2022-02-10 23:08:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11151 states, 11150 states have (on average 3.1182062780269058) internal successors, (34768), 11150 states have internal predecessors, (34768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11151 states to 11151 states and 34768 transitions. [2022-02-10 23:08:34,396 INFO L78 Accepts]: Start accepts. Automaton has 11151 states and 34768 transitions. Word has length 74 [2022-02-10 23:08:34,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:34,396 INFO L470 AbstractCegarLoop]: Abstraction has 11151 states and 34768 transitions. [2022-02-10 23:08:34,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:34,396 INFO L276 IsEmpty]: Start isEmpty. Operand 11151 states and 34768 transitions. [2022-02-10 23:08:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:08:34,412 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:34,412 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:08:34,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-10 23:08:34,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-02-10 23:08:34,612 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:34,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:34,613 INFO L85 PathProgramCache]: Analyzing trace with hash -914776021, now seen corresponding path program 96 times [2022-02-10 23:08:34,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:34,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531656659] [2022-02-10 23:08:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:34,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:34,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:34,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531656659] [2022-02-10 23:08:34,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531656659] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:34,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124689261] [2022-02-10 23:08:34,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:08:34,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:34,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:34,835 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:34,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-10 23:08:34,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:08:34,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:34,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:08:34,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:35,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:36,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124689261] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:36,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:36,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:08:36,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188946774] [2022-02-10 23:08:36,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:36,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:08:36,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:36,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:08:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:08:36,185 INFO L87 Difference]: Start difference. First operand 11151 states and 34768 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:45,990 INFO L93 Difference]: Finished difference Result 16933 states and 50803 transitions. [2022-02-10 23:08:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-02-10 23:08:45,991 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:08:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:46,028 INFO L225 Difference]: With dead ends: 16933 [2022-02-10 23:08:46,028 INFO L226 Difference]: Without dead ends: 16408 [2022-02-10 23:08:46,030 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14183 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=3426, Invalid=35186, Unknown=0, NotChecked=0, Total=38612 [2022-02-10 23:08:46,030 INFO L934 BasicCegarLoop]: 378 mSDtfsCounter, 1409 mSDsluCounter, 7377 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 7452 SdHoareTripleChecker+Invalid, 4263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:46,030 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 7452 Invalid, 4263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3984 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 23:08:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16408 states. [2022-02-10 23:08:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16408 to 11567. [2022-02-10 23:08:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11567 states, 11566 states have (on average 3.1322842815147847) internal successors, (36228), 11566 states have internal predecessors, (36228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11567 states to 11567 states and 36228 transitions. [2022-02-10 23:08:46,273 INFO L78 Accepts]: Start accepts. Automaton has 11567 states and 36228 transitions. Word has length 74 [2022-02-10 23:08:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:46,273 INFO L470 AbstractCegarLoop]: Abstraction has 11567 states and 36228 transitions. [2022-02-10 23:08:46,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 11567 states and 36228 transitions. [2022-02-10 23:08:46,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:08:46,352 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:46,352 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:08:46,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-10 23:08:46,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:46,553 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1658397179, now seen corresponding path program 97 times [2022-02-10 23:08:46,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:46,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355911582] [2022-02-10 23:08:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:46,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:46,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:46,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355911582] [2022-02-10 23:08:46,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355911582] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:46,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714136497] [2022-02-10 23:08:46,772 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:08:46,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:46,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:46,773 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:46,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-10 23:08:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:46,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:08:46,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:47,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:48,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714136497] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:48,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:48,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:08:48,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726830526] [2022-02-10 23:08:48,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:48,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:08:48,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:08:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:08:48,149 INFO L87 Difference]: Start difference. First operand 11567 states and 36228 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:53,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:08:53,086 INFO L93 Difference]: Finished difference Result 15141 states and 46225 transitions. [2022-02-10 23:08:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-10 23:08:53,086 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:08:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:08:53,118 INFO L225 Difference]: With dead ends: 15141 [2022-02-10 23:08:53,118 INFO L226 Difference]: Without dead ends: 14928 [2022-02-10 23:08:53,119 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5529 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1507, Invalid=15785, Unknown=0, NotChecked=0, Total=17292 [2022-02-10 23:08:53,119 INFO L934 BasicCegarLoop]: 258 mSDtfsCounter, 862 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 4522 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:08:53,120 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 4522 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:08:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14928 states. [2022-02-10 23:08:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14928 to 12035. [2022-02-10 23:08:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12035 states, 12034 states have (on average 3.1320425461193286) internal successors, (37691), 12034 states have internal predecessors, (37691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12035 states to 12035 states and 37691 transitions. [2022-02-10 23:08:53,368 INFO L78 Accepts]: Start accepts. Automaton has 12035 states and 37691 transitions. Word has length 74 [2022-02-10 23:08:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:08:53,369 INFO L470 AbstractCegarLoop]: Abstraction has 12035 states and 37691 transitions. [2022-02-10 23:08:53,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:08:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 12035 states and 37691 transitions. [2022-02-10 23:08:53,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:08:53,386 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:08:53,386 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:08:53,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-10 23:08:53,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:53,596 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:08:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:08:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2007380695, now seen corresponding path program 98 times [2022-02-10 23:08:53,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:08:53,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041221530] [2022-02-10 23:08:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:08:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:08:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:08:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:53,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:08:53,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041221530] [2022-02-10 23:08:53,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041221530] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:08:53,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591785218] [2022-02-10 23:08:53,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:08:53,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:08:53,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:08:53,821 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:08:53,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-10 23:08:53,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:08:53,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:08:53,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:08:53,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:08:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:54,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:08:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:08:55,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591785218] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:08:55,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:08:55,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:08:55,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350767419] [2022-02-10 23:08:55,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:08:55,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:08:55,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:08:55,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:08:55,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:08:55,169 INFO L87 Difference]: Start difference. First operand 12035 states and 37691 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:04,100 INFO L93 Difference]: Finished difference Result 18266 states and 55335 transitions. [2022-02-10 23:09:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-02-10 23:09:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:09:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:04,137 INFO L225 Difference]: With dead ends: 18266 [2022-02-10 23:09:04,137 INFO L226 Difference]: Without dead ends: 17771 [2022-02-10 23:09:04,139 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12665 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3170, Invalid=31986, Unknown=0, NotChecked=0, Total=35156 [2022-02-10 23:09:04,139 INFO L934 BasicCegarLoop]: 370 mSDtfsCounter, 1388 mSDsluCounter, 7728 mSDsCounter, 0 mSdLazyCounter, 4133 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 7819 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 4133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:04,140 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 7819 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 4133 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 23:09:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17771 states. [2022-02-10 23:09:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17771 to 12519. [2022-02-10 23:09:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12519 states, 12518 states have (on average 3.1578526921233423) internal successors, (39530), 12518 states have internal predecessors, (39530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12519 states to 12519 states and 39530 transitions. [2022-02-10 23:09:04,441 INFO L78 Accepts]: Start accepts. Automaton has 12519 states and 39530 transitions. Word has length 74 [2022-02-10 23:09:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:04,441 INFO L470 AbstractCegarLoop]: Abstraction has 12519 states and 39530 transitions. [2022-02-10 23:09:04,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12519 states and 39530 transitions. [2022-02-10 23:09:04,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:09:04,462 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:04,462 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:09:04,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-10 23:09:04,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-02-10 23:09:04,663 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:04,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1221977889, now seen corresponding path program 99 times [2022-02-10 23:09:04,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:04,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392590742] [2022-02-10 23:09:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:04,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:04,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392590742] [2022-02-10 23:09:04,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392590742] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:04,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765016798] [2022-02-10 23:09:04,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:09:04,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:04,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:04,893 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:04,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-10 23:09:04,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:09:04,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:04,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-10 23:09:04,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:05,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:06,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765016798] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:06,704 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:06,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-02-10 23:09:06,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721675388] [2022-02-10 23:09:06,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:06,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-10 23:09:06,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-10 23:09:06,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2114, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 23:09:06,705 INFO L87 Difference]: Start difference. First operand 12519 states and 39530 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:13,282 INFO L93 Difference]: Finished difference Result 16738 states and 51308 transitions. [2022-02-10 23:09:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 23:09:13,283 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:09:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:13,319 INFO L225 Difference]: With dead ends: 16738 [2022-02-10 23:09:13,319 INFO L226 Difference]: Without dead ends: 16576 [2022-02-10 23:09:13,320 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5471 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2129, Invalid=16777, Unknown=0, NotChecked=0, Total=18906 [2022-02-10 23:09:13,320 INFO L934 BasicCegarLoop]: 163 mSDtfsCounter, 1341 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3725 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:13,320 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 3725 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 23:09:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16576 states. [2022-02-10 23:09:13,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16576 to 12727. [2022-02-10 23:09:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 12726 states have (on average 3.165959453088166) internal successors, (40290), 12726 states have internal predecessors, (40290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 40290 transitions. [2022-02-10 23:09:13,628 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 40290 transitions. Word has length 74 [2022-02-10 23:09:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:13,628 INFO L470 AbstractCegarLoop]: Abstraction has 12727 states and 40290 transitions. [2022-02-10 23:09:13,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:13,628 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 40290 transitions. [2022-02-10 23:09:13,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:09:13,651 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:13,651 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:09:13,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:13,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:13,853 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -591710751, now seen corresponding path program 100 times [2022-02-10 23:09:13,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:13,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478222896] [2022-02-10 23:09:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:13,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:14,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:14,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478222896] [2022-02-10 23:09:14,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478222896] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:14,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004330231] [2022-02-10 23:09:14,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:09:14,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:14,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:14,075 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:14,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-10 23:09:14,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:09:14,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:14,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:09:14,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:14,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:15,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004330231] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:15,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:15,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:09:15,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010866658] [2022-02-10 23:09:15,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:15,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:09:15,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:15,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:09:15,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:09:15,392 INFO L87 Difference]: Start difference. First operand 12727 states and 40290 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:27,079 INFO L93 Difference]: Finished difference Result 21319 states and 64920 transitions. [2022-02-10 23:09:27,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-02-10 23:09:27,079 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:09:27,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:27,124 INFO L225 Difference]: With dead ends: 21319 [2022-02-10 23:09:27,124 INFO L226 Difference]: Without dead ends: 21115 [2022-02-10 23:09:27,126 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18686 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4394, Invalid=43348, Unknown=0, NotChecked=0, Total=47742 [2022-02-10 23:09:27,126 INFO L934 BasicCegarLoop]: 373 mSDtfsCounter, 1619 mSDsluCounter, 6823 mSDsCounter, 0 mSdLazyCounter, 3830 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 6964 SdHoareTripleChecker+Invalid, 4110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 3830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:27,126 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 6964 Invalid, 4110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 3830 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-10 23:09:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21115 states. [2022-02-10 23:09:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21115 to 14347. [2022-02-10 23:09:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14347 states, 14346 states have (on average 3.182001951763558) internal successors, (45649), 14346 states have internal predecessors, (45649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14347 states to 14347 states and 45649 transitions. [2022-02-10 23:09:27,518 INFO L78 Accepts]: Start accepts. Automaton has 14347 states and 45649 transitions. Word has length 74 [2022-02-10 23:09:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:27,518 INFO L470 AbstractCegarLoop]: Abstraction has 14347 states and 45649 transitions. [2022-02-10 23:09:27,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 14347 states and 45649 transitions. [2022-02-10 23:09:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:09:27,542 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:27,543 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:09:27,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-10 23:09:27,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-10 23:09:27,743 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1265584007, now seen corresponding path program 101 times [2022-02-10 23:09:27,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:27,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757978581] [2022-02-10 23:09:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:27,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:27,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757978581] [2022-02-10 23:09:27,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757978581] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:27,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882064641] [2022-02-10 23:09:27,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:09:27,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:27,963 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:27,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-10 23:09:28,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:09:28,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:28,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:09:28,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:28,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:29,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882064641] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:29,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:29,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-10 23:09:29,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028201069] [2022-02-10 23:09:29,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:29,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-10 23:09:29,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:29,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-10 23:09:29,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 23:09:29,312 INFO L87 Difference]: Start difference. First operand 14347 states and 45649 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:41,385 INFO L93 Difference]: Finished difference Result 22070 states and 67298 transitions. [2022-02-10 23:09:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-02-10 23:09:41,386 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:09:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:41,431 INFO L225 Difference]: With dead ends: 22070 [2022-02-10 23:09:41,432 INFO L226 Difference]: Without dead ends: 21560 [2022-02-10 23:09:41,434 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18825 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=4518, Invalid=44544, Unknown=0, NotChecked=0, Total=49062 [2022-02-10 23:09:41,434 INFO L934 BasicCegarLoop]: 379 mSDtfsCounter, 1471 mSDsluCounter, 7705 mSDsCounter, 0 mSdLazyCounter, 4198 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 7834 SdHoareTripleChecker+Invalid, 4498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 4198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:41,434 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 7834 Invalid, 4498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 4198 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-10 23:09:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21560 states. [2022-02-10 23:09:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21560 to 14375. [2022-02-10 23:09:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14375 states, 14374 states have (on average 3.1789341867260332) internal successors, (45694), 14374 states have internal predecessors, (45694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14375 states to 14375 states and 45694 transitions. [2022-02-10 23:09:41,822 INFO L78 Accepts]: Start accepts. Automaton has 14375 states and 45694 transitions. Word has length 74 [2022-02-10 23:09:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:41,822 INFO L470 AbstractCegarLoop]: Abstraction has 14375 states and 45694 transitions. [2022-02-10 23:09:41,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 14375 states and 45694 transitions. [2022-02-10 23:09:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:09:41,846 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:41,846 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:09:41,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:42,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-10 23:09:42,047 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1021008305, now seen corresponding path program 102 times [2022-02-10 23:09:42,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:42,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817558494] [2022-02-10 23:09:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:42,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:42,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:42,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817558494] [2022-02-10 23:09:42,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817558494] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:42,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186319498] [2022-02-10 23:09:42,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:09:42,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:42,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:42,274 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:42,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-10 23:09:42,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:09:42,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:42,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:09:42,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:42,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:43,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186319498] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:43,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:43,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-10 23:09:43,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415243963] [2022-02-10 23:09:43,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:43,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 23:09:43,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:43,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 23:09:43,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 23:09:43,381 INFO L87 Difference]: Start difference. First operand 14375 states and 45694 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:46,511 INFO L93 Difference]: Finished difference Result 18660 states and 58002 transitions. [2022-02-10 23:09:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-10 23:09:46,512 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:09:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:46,550 INFO L225 Difference]: With dead ends: 18660 [2022-02-10 23:09:46,550 INFO L226 Difference]: Without dead ends: 18558 [2022-02-10 23:09:46,551 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3863 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1306, Invalid=10684, Unknown=0, NotChecked=0, Total=11990 [2022-02-10 23:09:46,551 INFO L934 BasicCegarLoop]: 188 mSDtfsCounter, 851 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:46,551 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 3007 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:09:46,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18558 states. [2022-02-10 23:09:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18558 to 14971. [2022-02-10 23:09:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14971 states, 14970 states have (on average 3.1810955243820978) internal successors, (47621), 14970 states have internal predecessors, (47621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14971 states to 14971 states and 47621 transitions. [2022-02-10 23:09:46,879 INFO L78 Accepts]: Start accepts. Automaton has 14971 states and 47621 transitions. Word has length 74 [2022-02-10 23:09:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:46,879 INFO L470 AbstractCegarLoop]: Abstraction has 14971 states and 47621 transitions. [2022-02-10 23:09:46,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 14971 states and 47621 transitions. [2022-02-10 23:09:46,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:09:46,985 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:46,985 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:09:47,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:47,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-02-10 23:09:47,185 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1000290919, now seen corresponding path program 103 times [2022-02-10 23:09:47,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:47,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660883459] [2022-02-10 23:09:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:47,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:47,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660883459] [2022-02-10 23:09:47,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660883459] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:47,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342588167] [2022-02-10 23:09:47,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:09:47,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:47,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:47,456 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:47,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-10 23:09:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:47,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:09:47,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:48,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:48,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342588167] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:48,600 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:48,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:09:48,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958299425] [2022-02-10 23:09:48,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:48,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:09:48,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:09:48,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:09:48,601 INFO L87 Difference]: Start difference. First operand 14971 states and 47621 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:09:52,491 INFO L93 Difference]: Finished difference Result 18544 states and 57775 transitions. [2022-02-10 23:09:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 23:09:52,491 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:09:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:09:52,533 INFO L225 Difference]: With dead ends: 18544 [2022-02-10 23:09:52,534 INFO L226 Difference]: Without dead ends: 18442 [2022-02-10 23:09:52,534 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3456 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1297, Invalid=9833, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 23:09:52,534 INFO L934 BasicCegarLoop]: 195 mSDtfsCounter, 760 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:09:52,534 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2975 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:09:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18442 states. [2022-02-10 23:09:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18442 to 14999. [2022-02-10 23:09:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14999 states, 14998 states have (on average 3.180557407654354) internal successors, (47702), 14998 states have internal predecessors, (47702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14999 states to 14999 states and 47702 transitions. [2022-02-10 23:09:52,896 INFO L78 Accepts]: Start accepts. Automaton has 14999 states and 47702 transitions. Word has length 74 [2022-02-10 23:09:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:09:52,896 INFO L470 AbstractCegarLoop]: Abstraction has 14999 states and 47702 transitions. [2022-02-10 23:09:52,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:09:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 14999 states and 47702 transitions. [2022-02-10 23:09:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:09:52,921 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:09:52,921 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:09:52,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-10 23:09:53,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:53,122 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:09:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:09:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1644791681, now seen corresponding path program 104 times [2022-02-10 23:09:53,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:09:53,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95431867] [2022-02-10 23:09:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:09:53,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:09:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:09:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:53,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:09:53,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95431867] [2022-02-10 23:09:53,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95431867] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:09:53,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977744675] [2022-02-10 23:09:53,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:09:53,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:09:53,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:09:53,336 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:09:53,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-10 23:09:53,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:09:53,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:09:53,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:09:53,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:09:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:53,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:09:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:09:54,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977744675] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:09:54,552 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:09:54,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:09:54,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076185836] [2022-02-10 23:09:54,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:09:54,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:09:54,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:09:54,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:09:54,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:09:54,553 INFO L87 Difference]: Start difference. First operand 14999 states and 47702 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:07,033 INFO L93 Difference]: Finished difference Result 25353 states and 76521 transitions. [2022-02-10 23:10:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2022-02-10 23:10:07,033 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:10:07,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:07,092 INFO L225 Difference]: With dead ends: 25353 [2022-02-10 23:10:07,092 INFO L226 Difference]: Without dead ends: 24804 [2022-02-10 23:10:07,095 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27108 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=8356, Invalid=60026, Unknown=0, NotChecked=0, Total=68382 [2022-02-10 23:10:07,095 INFO L934 BasicCegarLoop]: 456 mSDtfsCounter, 1904 mSDsluCounter, 7607 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 7567 SdHoareTripleChecker+Invalid, 4365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:07,095 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1904 Valid, 7567 Invalid, 4365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-10 23:10:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24804 states. [2022-02-10 23:10:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24804 to 15367. [2022-02-10 23:10:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15366 states have (on average 3.1837823766757776) internal successors, (48922), 15366 states have internal predecessors, (48922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 48922 transitions. [2022-02-10 23:10:07,507 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 48922 transitions. Word has length 74 [2022-02-10 23:10:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:07,507 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 48922 transitions. [2022-02-10 23:10:07,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 48922 transitions. [2022-02-10 23:10:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:10:07,531 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:07,532 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:10:07,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-10 23:10:07,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:07,733 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 377723573, now seen corresponding path program 105 times [2022-02-10 23:10:07,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:07,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495746816] [2022-02-10 23:10:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:07,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:07,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:07,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495746816] [2022-02-10 23:10:07,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495746816] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:07,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130157564] [2022-02-10 23:10:07,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:10:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:07,947 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:10:07,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-10 23:10:08,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:10:08,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:08,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:10:08,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:08,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:09,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130157564] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:09,088 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:09,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:10:09,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340813382] [2022-02-10 23:10:09,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:09,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:10:09,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:09,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:10:09,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:10:09,089 INFO L87 Difference]: Start difference. First operand 15367 states and 48922 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:13,562 INFO L93 Difference]: Finished difference Result 20342 states and 63039 transitions. [2022-02-10 23:10:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-10 23:10:13,562 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:10:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:13,604 INFO L225 Difference]: With dead ends: 20342 [2022-02-10 23:10:13,604 INFO L226 Difference]: Without dead ends: 19766 [2022-02-10 23:10:13,605 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6531 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2589, Invalid=16871, Unknown=0, NotChecked=0, Total=19460 [2022-02-10 23:10:13,605 INFO L934 BasicCegarLoop]: 273 mSDtfsCounter, 1602 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 4485 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:13,605 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 4485 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 23:10:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19766 states. [2022-02-10 23:10:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19766 to 16015. [2022-02-10 23:10:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16015 states, 16014 states have (on average 3.185462720119895) internal successors, (51012), 16014 states have internal predecessors, (51012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16015 states to 16015 states and 51012 transitions. [2022-02-10 23:10:13,932 INFO L78 Accepts]: Start accepts. Automaton has 16015 states and 51012 transitions. Word has length 74 [2022-02-10 23:10:13,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:13,932 INFO L470 AbstractCegarLoop]: Abstraction has 16015 states and 51012 transitions. [2022-02-10 23:10:13,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:13,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16015 states and 51012 transitions. [2022-02-10 23:10:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:10:14,037 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:14,037 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:10:14,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-02-10 23:10:14,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-02-10 23:10:14,237 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:14,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1042978437, now seen corresponding path program 106 times [2022-02-10 23:10:14,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:14,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623810796] [2022-02-10 23:10:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:14,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:14,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623810796] [2022-02-10 23:10:14,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623810796] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:14,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696017590] [2022-02-10 23:10:14,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:10:14,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:14,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:14,472 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:10:14,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-10 23:10:14,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:10:14,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:14,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:10:14,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:15,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:15,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696017590] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:15,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:15,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-10 23:10:15,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258752797] [2022-02-10 23:10:15,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:15,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:10:15,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:10:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:10:15,614 INFO L87 Difference]: Start difference. First operand 16015 states and 51012 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:21,448 INFO L93 Difference]: Finished difference Result 23261 states and 71080 transitions. [2022-02-10 23:10:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-02-10 23:10:21,448 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:10:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:21,499 INFO L225 Difference]: With dead ends: 23261 [2022-02-10 23:10:21,499 INFO L226 Difference]: Without dead ends: 23057 [2022-02-10 23:10:21,501 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9195 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2673, Invalid=23409, Unknown=0, NotChecked=0, Total=26082 [2022-02-10 23:10:21,501 INFO L934 BasicCegarLoop]: 314 mSDtfsCounter, 1240 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:21,501 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 5297 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-10 23:10:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23057 states. [2022-02-10 23:10:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23057 to 16183. [2022-02-10 23:10:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16183 states, 16182 states have (on average 3.1836608577431713) internal successors, (51518), 16182 states have internal predecessors, (51518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16183 states to 16183 states and 51518 transitions. [2022-02-10 23:10:21,900 INFO L78 Accepts]: Start accepts. Automaton has 16183 states and 51518 transitions. Word has length 74 [2022-02-10 23:10:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:21,900 INFO L470 AbstractCegarLoop]: Abstraction has 16183 states and 51518 transitions. [2022-02-10 23:10:21,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16183 states and 51518 transitions. [2022-02-10 23:10:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:10:21,928 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:21,928 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:10:21,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-10 23:10:22,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:22,128 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1710809265, now seen corresponding path program 107 times [2022-02-10 23:10:22,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:22,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979737086] [2022-02-10 23:10:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:22,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:22,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:22,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979737086] [2022-02-10 23:10:22,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979737086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:22,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019579552] [2022-02-10 23:10:22,329 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:10:22,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:22,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:22,330 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:10:22,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-10 23:10:22,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:10:22,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:22,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:10:22,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:22,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:23,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019579552] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:23,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:23,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-10 23:10:23,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548769662] [2022-02-10 23:10:23,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:23,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 23:10:23,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 23:10:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 23:10:23,381 INFO L87 Difference]: Start difference. First operand 16183 states and 51518 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:24,746 INFO L93 Difference]: Finished difference Result 19889 states and 62104 transitions. [2022-02-10 23:10:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 23:10:24,746 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:10:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:24,787 INFO L225 Difference]: With dead ends: 19889 [2022-02-10 23:10:24,788 INFO L226 Difference]: Without dead ends: 19787 [2022-02-10 23:10:24,788 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=559, Invalid=4411, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 23:10:24,788 INFO L934 BasicCegarLoop]: 179 mSDtfsCounter, 526 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:24,788 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2979 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:10:24,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19787 states. [2022-02-10 23:10:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19787 to 16183. [2022-02-10 23:10:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16183 states, 16182 states have (on average 3.1836608577431713) internal successors, (51518), 16182 states have internal predecessors, (51518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:25,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16183 states to 16183 states and 51518 transitions. [2022-02-10 23:10:25,185 INFO L78 Accepts]: Start accepts. Automaton has 16183 states and 51518 transitions. Word has length 74 [2022-02-10 23:10:25,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:10:25,185 INFO L470 AbstractCegarLoop]: Abstraction has 16183 states and 51518 transitions. [2022-02-10 23:10:25,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:25,185 INFO L276 IsEmpty]: Start isEmpty. Operand 16183 states and 51518 transitions. [2022-02-10 23:10:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-10 23:10:25,214 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:10:25,214 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:10:25,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-10 23:10:25,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:25,414 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:10:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:10:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash 864727055, now seen corresponding path program 108 times [2022-02-10 23:10:25,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:10:25,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210036413] [2022-02-10 23:10:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:10:25,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:10:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:10:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:25,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:10:25,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210036413] [2022-02-10 23:10:25,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210036413] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:10:25,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440651263] [2022-02-10 23:10:25,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:10:25,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:25,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:10:25,634 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:10:25,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-10 23:10:25,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:10:25,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:10:25,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-10 23:10:25,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:10:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:26,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:10:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:10:26,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440651263] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:10:26,759 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:10:26,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-10 23:10:26,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966554491] [2022-02-10 23:10:26,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:10:26,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 23:10:26,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:10:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 23:10:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 23:10:26,760 INFO L87 Difference]: Start difference. First operand 16183 states and 51518 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:10:29,507 INFO L93 Difference]: Finished difference Result 20048 states and 62492 transitions. [2022-02-10 23:10:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-10 23:10:29,507 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-10 23:10:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:10:29,549 INFO L225 Difference]: With dead ends: 20048 [2022-02-10 23:10:29,549 INFO L226 Difference]: Without dead ends: 19946 [2022-02-10 23:10:29,550 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2981 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1075, Invalid=8825, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 23:10:29,550 INFO L934 BasicCegarLoop]: 179 mSDtfsCounter, 788 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:10:29,550 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3483 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:10:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19946 states. [2022-02-10 23:10:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19946 to 16427. Received shutdown request... [2022-02-10 23:10:29,896 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 23:10:29,896 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 23:10:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16427 states, 16426 states have (on average 3.1842810178984537) internal successors, (52305), 16426 states have internal predecessors, (52305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:10:29,915 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 23:10:29,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-10 23:10:30,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:10:30,117 WARN L594 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2022-02-10 23:10:30,118 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 23:10:30,118 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 23:10:30,121 INFO L733 BasicCegarLoop]: Path program histogram: [108, 1, 1, 1] [2022-02-10 23:10:30,123 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 23:10:30,123 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:10:30,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:10:30 BasicIcfg [2022-02-10 23:10:30,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:10:30,125 INFO L158 Benchmark]: Toolchain (without parser) took 702294.71ms. Allocated memory was 189.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 132.9MB in the beginning and 526.7MB in the end (delta: -393.8MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-02-10 23:10:30,125 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:10:30,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.78ms. Allocated memory was 189.8MB in the beginning and 275.8MB in the end (delta: 86.0MB). Free memory was 132.7MB in the beginning and 246.1MB in the end (delta: -113.4MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-02-10 23:10:30,125 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.37ms. Allocated memory is still 275.8MB. Free memory was 246.1MB in the beginning and 244.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 23:10:30,125 INFO L158 Benchmark]: Boogie Preprocessor took 27.65ms. Allocated memory is still 275.8MB. Free memory was 244.0MB in the beginning and 242.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:10:30,125 INFO L158 Benchmark]: RCFGBuilder took 314.86ms. Allocated memory is still 275.8MB. Free memory was 242.9MB in the beginning and 228.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-02-10 23:10:30,125 INFO L158 Benchmark]: TraceAbstraction took 701681.26ms. Allocated memory was 275.8MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 227.7MB in the beginning and 526.7MB in the end (delta: -299.0MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-02-10 23:10:30,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 218.78ms. Allocated memory was 189.8MB in the beginning and 275.8MB in the end (delta: 86.0MB). Free memory was 132.7MB in the beginning and 246.1MB in the end (delta: -113.4MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.37ms. Allocated memory is still 275.8MB. Free memory was 246.1MB in the beginning and 244.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.65ms. Allocated memory is still 275.8MB. Free memory was 244.0MB in the beginning and 242.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 314.86ms. Allocated memory is still 275.8MB. Free memory was 242.9MB in the beginning and 228.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 701681.26ms. Allocated memory was 275.8MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 227.7MB in the beginning and 526.7MB in the end (delta: -299.0MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 701.5s, OverallIterations: 111, TraceHistogramMax: 2, PathProgramHistogramMax: 108, EmptinessCheckTime: 1.1s, AutomataDifference: 517.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116452 SdHoareTripleChecker+Valid, 99.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116452 mSDsluCounter, 468558 SdHoareTripleChecker+Invalid, 83.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 465383 mSDsCounter, 17231 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 239690 IncrementalHoareTripleChecker+Invalid, 256921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17231 mSolverCounterUnsat, 26361 mSDtfsCounter, 239690 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26952 GetRequests, 13156 SyntacticMatches, 212 SemanticMatches, 13584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736355 ImplicationChecksByTransitivity, 456.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16183occurred in iteration=109, InterpolantAutomatonStates: 11574, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.8s AutomataMinimizationTime, 111 MinimizatonAttempts, 293669 StatesRemovedByMinimization, 109 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 138.6s InterpolantComputationTime, 15725 NumberOfCodeBlocks, 15617 NumberOfCodeBlocksAsserted, 341 NumberOfCheckSat, 23165 ConstructedInterpolants, 0 QuantifiedInterpolants, 199639 SizeOfPredicates, 1423 NumberOfNonLiveVariables, 16884 ConjunctsInSsa, 2536 ConjunctsInUnsatCore, 327 InterpolantComputations, 3 PerfectInterpolantSequences, 4/1783 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown