/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.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 22:59:27,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 22:59:27,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 22:59:27,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 22:59:27,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 22:59:27,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 22:59:27,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 22:59:27,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 22:59:27,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 22:59:27,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 22:59:27,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 22:59:27,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 22:59:27,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 22:59:27,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 22:59:27,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 22:59:27,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 22:59:27,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 22:59:27,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 22:59:27,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 22:59:27,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 22:59:27,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 22:59:27,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 22:59:27,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 22:59:27,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 22:59:27,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-10 22:59:27,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 22:59:27,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 22:59:27,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 22:59:27,298 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 22:59:27,347 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 22:59:27,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 22:59:27,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 22:59:27,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 22:59:27,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 22:59:27,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 22:59:27,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 22:59:27,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 22:59:27,348 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 22:59:27,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 22:59:27,348 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 22:59:27,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 22:59:27,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:59:27,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 22:59:27,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 22:59:27,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 22:59:27,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 22:59:27,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 22:59:27,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 22:59:27,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 22:59:27,593 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 22:59:27,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-02-10 22:59:27,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10d8ee05/fc57a835741c48eead7e79b0dd421ede/FLAGd43ce6977 [2022-02-10 22:59:27,938 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 22:59:27,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-02-10 22:59:27,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10d8ee05/fc57a835741c48eead7e79b0dd421ede/FLAGd43ce6977 [2022-02-10 22:59:28,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10d8ee05/fc57a835741c48eead7e79b0dd421ede [2022-02-10 22:59:28,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 22:59:28,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 22:59:28,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 22:59:28,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 22:59:28,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 22:59:28,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a225a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28, skipping insertion in model container [2022-02-10 22:59:28,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 22:59:28,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 22:59:28,515 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.wvr.c[2037,2050] [2022-02-10 22:59:28,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:59:28,523 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 22:59:28,543 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.wvr.c[2037,2050] [2022-02-10 22:59:28,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:59:28,557 INFO L208 MainTranslator]: Completed translation [2022-02-10 22:59:28,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28 WrapperNode [2022-02-10 22:59:28,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 22:59:28,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 22:59:28,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 22:59:28,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 22:59:28,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,585 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-02-10 22:59:28,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 22:59:28,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 22:59:28,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 22:59:28,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 22:59:28,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 22:59:28,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 22:59:28,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 22:59:28,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 22:59:28,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (1/1) ... [2022-02-10 22:59:28,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:59:28,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:28,663 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 22:59:28,688 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 22:59:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 22:59:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 22:59:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 22:59:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 22:59:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 22:59:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 22:59:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 22:59:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 22:59:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 22:59:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 22:59:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 22:59:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 22:59:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 22:59:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 22:59:28,702 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 22:59:28,770 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 22:59:28,771 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 22:59:28,902 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 22:59:28,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 22:59:28,927 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 22:59:28,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:59:28 BoogieIcfgContainer [2022-02-10 22:59:28,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 22:59:28,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 22:59:28,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 22:59:28,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 22:59:28,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:59:28" (1/3) ... [2022-02-10 22:59:28,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a45a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:59:28, skipping insertion in model container [2022-02-10 22:59:28,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:59:28" (2/3) ... [2022-02-10 22:59:28,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a45a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:59:28, skipping insertion in model container [2022-02-10 22:59:28,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:59:28" (3/3) ... [2022-02-10 22:59:28,934 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-02-10 22:59:28,937 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 22:59:28,937 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 22:59:28,938 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 22:59:28,938 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 22:59:28,960 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,960 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,960 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,961 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,961 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,961 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,962 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,962 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,962 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,962 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,962 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,962 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,963 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,963 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,963 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,963 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,963 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,963 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,963 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,963 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,964 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,964 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,964 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,964 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,964 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,965 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,965 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,965 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,965 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,965 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,966 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,966 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,966 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,966 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,966 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,966 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,966 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,966 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,967 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,967 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,967 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,967 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,967 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,967 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,984 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,984 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,984 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,984 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,984 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,985 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,986 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,986 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,986 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,986 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:59:28,990 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 22:59:29,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 22:59:29,037 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 22:59:29,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 22:59:29,045 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 82 transitions, 180 flow [2022-02-10 22:59:29,098 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-10 22:59:29,113 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:29,114 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] [2022-02-10 22:59:29,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1376248037, now seen corresponding path program 1 times [2022-02-10 22:59:29,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:29,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685619271] [2022-02-10 22:59:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:29,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:29,280 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 22:59:29,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:29,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685619271] [2022-02-10 22:59:29,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685619271] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:59:29,281 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:59:29,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 22:59:29,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193541483] [2022-02-10 22:59:29,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:59:29,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 22:59:29,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 22:59:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:59:29,316 INFO L87 Difference]: Start difference. First operand has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:29,363 INFO L93 Difference]: Finished difference Result 328 states and 778 transitions. [2022-02-10 22:59:29,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 22:59:29,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-02-10 22:59:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:29,373 INFO L225 Difference]: With dead ends: 328 [2022-02-10 22:59:29,373 INFO L226 Difference]: Without dead ends: 326 [2022-02-10 22:59:29,374 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 22:59:29,376 INFO L934 BasicCegarLoop]: 61 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, 61 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 22:59:29,377 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:59:29,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-02-10 22:59:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2022-02-10 22:59:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.3876923076923076) internal successors, (776), 325 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 776 transitions. [2022-02-10 22:59:29,431 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 776 transitions. Word has length 58 [2022-02-10 22:59:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:29,431 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 776 transitions. [2022-02-10 22:59:29,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 776 transitions. [2022-02-10 22:59:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-10 22:59:29,434 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:29,434 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] [2022-02-10 22:59:29,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 22:59:29,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1501901863, now seen corresponding path program 1 times [2022-02-10 22:59:29,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:29,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454052827] [2022-02-10 22:59:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:29,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:29,596 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 22:59:29,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:29,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454052827] [2022-02-10 22:59:29,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454052827] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:59:29,596 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:59:29,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:59:29,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958589397] [2022-02-10 22:59:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:59:29,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:59:29,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:59:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:59:29,598 INFO L87 Difference]: Start difference. First operand 326 states and 776 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:29,679 INFO L93 Difference]: Finished difference Result 446 states and 1088 transitions. [2022-02-10 22:59:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:59:29,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-02-10 22:59:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:29,682 INFO L225 Difference]: With dead ends: 446 [2022-02-10 22:59:29,682 INFO L226 Difference]: Without dead ends: 446 [2022-02-10 22:59:29,683 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 22:59:29,684 INFO L934 BasicCegarLoop]: 63 mSDtfsCounter, 68 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:29,685 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 165 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:59:29,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-02-10 22:59:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 356. [2022-02-10 22:59:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.4056338028169013) internal successors, (854), 355 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 854 transitions. [2022-02-10 22:59:29,722 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 854 transitions. Word has length 58 [2022-02-10 22:59:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:29,722 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 854 transitions. [2022-02-10 22:59:29,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 854 transitions. [2022-02-10 22:59:29,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 22:59:29,725 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:29,725 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] [2022-02-10 22:59:29,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 22:59:29,725 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:29,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1550020423, now seen corresponding path program 1 times [2022-02-10 22:59:29,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:29,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049502567] [2022-02-10 22:59:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:29,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:29,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049502567] [2022-02-10 22:59:29,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049502567] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:29,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875674543] [2022-02-10 22:59:29,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:29,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:29,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:29,837 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 22:59:29,838 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 22:59:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:29,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 22:59:29,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:30,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:30,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875674543] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:30,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:30,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-02-10 22:59:30,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125125087] [2022-02-10 22:59:30,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:30,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 22:59:30,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 22:59:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-10 22:59:30,145 INFO L87 Difference]: Start difference. First operand 356 states and 854 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:30,297 INFO L93 Difference]: Finished difference Result 540 states and 1342 transitions. [2022-02-10 22:59:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 22:59:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 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 63 [2022-02-10 22:59:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:30,301 INFO L225 Difference]: With dead ends: 540 [2022-02-10 22:59:30,301 INFO L226 Difference]: Without dead ends: 540 [2022-02-10 22:59:30,302 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-02-10 22:59:30,303 INFO L934 BasicCegarLoop]: 93 mSDtfsCounter, 121 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:30,305 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 540 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:59:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-02-10 22:59:30,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 391. [2022-02-10 22:59:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 2.4307692307692306) internal successors, (948), 390 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 948 transitions. [2022-02-10 22:59:30,331 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 948 transitions. Word has length 63 [2022-02-10 22:59:30,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:30,332 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 948 transitions. [2022-02-10 22:59:30,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 948 transitions. [2022-02-10 22:59:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 22:59:30,335 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:30,336 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] [2022-02-10 22:59:30,356 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 22:59:30,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:30,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2085302797, now seen corresponding path program 2 times [2022-02-10 22:59:30,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:30,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113386308] [2022-02-10 22:59:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:30,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:30,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:30,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113386308] [2022-02-10 22:59:30,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113386308] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:30,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230424742] [2022-02-10 22:59:30,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:59:30,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:30,623 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 22:59:30,629 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 22:59:30,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-02-10 22:59:30,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:30,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 22:59:30,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:30,932 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 22:59:30,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:59:30,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230424742] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:59:30,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:59:30,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-02-10 22:59:30,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61558777] [2022-02-10 22:59:30,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:59:30,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:59:30,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:59:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:59:30,938 INFO L87 Difference]: Start difference. First operand 391 states and 948 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:31,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:31,021 INFO L93 Difference]: Finished difference Result 477 states and 1180 transitions. [2022-02-10 22:59:31,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 22:59:31,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-10 22:59:31,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:31,025 INFO L225 Difference]: With dead ends: 477 [2022-02-10 22:59:31,025 INFO L226 Difference]: Without dead ends: 477 [2022-02-10 22:59:31,028 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-02-10 22:59:31,029 INFO L934 BasicCegarLoop]: 64 mSDtfsCounter, 107 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:31,031 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 174 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:59:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-02-10 22:59:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 399. [2022-02-10 22:59:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 2.437185929648241) internal successors, (970), 398 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 970 transitions. [2022-02-10 22:59:31,043 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 970 transitions. Word has length 63 [2022-02-10 22:59:31,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:31,044 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 970 transitions. [2022-02-10 22:59:31,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:31,044 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 970 transitions. [2022-02-10 22:59:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:59:31,046 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:31,046 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] [2022-02-10 22:59:31,083 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 22:59:31,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-10 22:59:31,264 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:31,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash -60630437, now seen corresponding path program 1 times [2022-02-10 22:59:31,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:31,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314670] [2022-02-10 22:59:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:31,432 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 22:59:31,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:31,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314670] [2022-02-10 22:59:31,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:31,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274967215] [2022-02-10 22:59:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:31,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:31,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:31,448 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 22:59:31,459 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 22:59:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:31,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 22:59:31,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:31,635 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 22:59:31,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:32,044 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 22:59:32,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274967215] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:32,045 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:32,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2022-02-10 22:59:32,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307960938] [2022-02-10 22:59:32,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:32,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 22:59:32,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 22:59:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:59:32,047 INFO L87 Difference]: Start difference. First operand 399 states and 970 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:32,092 INFO L93 Difference]: Finished difference Result 896 states and 2243 transitions. [2022-02-10 22:59:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:59:32,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 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 65 [2022-02-10 22:59:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:32,096 INFO L225 Difference]: With dead ends: 896 [2022-02-10 22:59:32,096 INFO L226 Difference]: Without dead ends: 752 [2022-02-10 22:59:32,096 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:59:32,096 INFO L934 BasicCegarLoop]: 83 mSDtfsCounter, 111 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:32,097 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 358 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:59:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-02-10 22:59:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 606. [2022-02-10 22:59:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 2.5355371900826444) internal successors, (1534), 605 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1534 transitions. [2022-02-10 22:59:32,112 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1534 transitions. Word has length 65 [2022-02-10 22:59:32,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:32,112 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1534 transitions. [2022-02-10 22:59:32,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1534 transitions. [2022-02-10 22:59:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:59:32,115 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:32,115 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] [2022-02-10 22:59:32,136 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 22:59:32,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:32,333 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:32,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1922671995, now seen corresponding path program 2 times [2022-02-10 22:59:32,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:32,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137349252] [2022-02-10 22:59:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:32,471 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 22:59:32,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:32,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137349252] [2022-02-10 22:59:32,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137349252] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:32,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115063843] [2022-02-10 22:59:32,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:59:32,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:32,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:32,474 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 22:59:32,476 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 22:59:32,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:59:32,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:32,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 22:59:32,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:32,645 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 22:59:32,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:32,815 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 22:59:32,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115063843] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:32,815 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:32,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2022-02-10 22:59:32,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697676163] [2022-02-10 22:59:32,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:32,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 22:59:32,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:32,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 22:59:32,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-10 22:59:32,817 INFO L87 Difference]: Start difference. First operand 606 states and 1534 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:32,932 INFO L93 Difference]: Finished difference Result 755 states and 1922 transitions. [2022-02-10 22:59:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 22:59:32,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 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 65 [2022-02-10 22:59:32,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:32,936 INFO L225 Difference]: With dead ends: 755 [2022-02-10 22:59:32,936 INFO L226 Difference]: Without dead ends: 740 [2022-02-10 22:59:32,936 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-02-10 22:59:32,937 INFO L934 BasicCegarLoop]: 88 mSDtfsCounter, 65 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:32,938 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 311 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:59:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-02-10 22:59:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 598. [2022-02-10 22:59:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 2.5326633165829144) internal successors, (1512), 597 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1512 transitions. [2022-02-10 22:59:32,953 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1512 transitions. Word has length 65 [2022-02-10 22:59:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:32,953 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 1512 transitions. [2022-02-10 22:59:32,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1512 transitions. [2022-02-10 22:59:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:32,954 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:32,955 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] [2022-02-10 22:59:32,973 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 22:59:33,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:33,172 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1971137093, now seen corresponding path program 3 times [2022-02-10 22:59:33,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:33,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238513190] [2022-02-10 22:59:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:33,292 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 22:59:33,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:33,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238513190] [2022-02-10 22:59:33,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238513190] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:33,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426873169] [2022-02-10 22:59:33,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:59:33,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:33,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:33,293 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 22:59:33,294 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 22:59:33,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:59:33,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:33,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:33,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:33,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:33,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426873169] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:33,711 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:33,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 20 [2022-02-10 22:59:33,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972681441] [2022-02-10 22:59:33,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:33,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:59:33,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:33,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:59:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:59:33,713 INFO L87 Difference]: Start difference. First operand 598 states and 1512 transitions. Second operand has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:34,582 INFO L93 Difference]: Finished difference Result 1484 states and 3857 transitions. [2022-02-10 22:59:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 22:59:34,583 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:34,588 INFO L225 Difference]: With dead ends: 1484 [2022-02-10 22:59:34,588 INFO L226 Difference]: Without dead ends: 1469 [2022-02-10 22:59:34,590 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=748, Invalid=3542, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 22:59:34,590 INFO L934 BasicCegarLoop]: 186 mSDtfsCounter, 522 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:34,590 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1616 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:59:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2022-02-10 22:59:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 680. [2022-02-10 22:59:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 2.552282768777614) internal successors, (1733), 679 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1733 transitions. [2022-02-10 22:59:34,608 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1733 transitions. Word has length 70 [2022-02-10 22:59:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:34,609 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 1733 transitions. [2022-02-10 22:59:34,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1733 transitions. [2022-02-10 22:59:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:34,611 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:34,611 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] [2022-02-10 22:59:34,647 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 22:59:34,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:34,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:34,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash 481657637, now seen corresponding path program 4 times [2022-02-10 22:59:34,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:34,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143829895] [2022-02-10 22:59:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:34,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:34,975 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 22:59:34,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:34,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143829895] [2022-02-10 22:59:34,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143829895] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:34,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172185415] [2022-02-10 22:59:34,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:59:34,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:34,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:34,986 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 22:59:35,012 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 22:59:35,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:59:35,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:35,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 22:59:35,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:35,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:35,498 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 22:59:35,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172185415] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:35,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:35,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2022-02-10 22:59:35,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113765797] [2022-02-10 22:59:35,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:35,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 22:59:35,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 22:59:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-02-10 22:59:35,503 INFO L87 Difference]: Start difference. First operand 680 states and 1733 transitions. Second operand has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:36,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:36,140 INFO L93 Difference]: Finished difference Result 1453 states and 3763 transitions. [2022-02-10 22:59:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 22:59:36,140 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:36,145 INFO L225 Difference]: With dead ends: 1453 [2022-02-10 22:59:36,146 INFO L226 Difference]: Without dead ends: 1438 [2022-02-10 22:59:36,146 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=624, Invalid=2456, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 22:59:36,147 INFO L934 BasicCegarLoop]: 144 mSDtfsCounter, 459 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:36,147 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1592 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:59:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-02-10 22:59:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 696. [2022-02-10 22:59:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 2.5568345323741006) internal successors, (1777), 695 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1777 transitions. [2022-02-10 22:59:36,182 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1777 transitions. Word has length 70 [2022-02-10 22:59:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:36,183 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1777 transitions. [2022-02-10 22:59:36,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1777 transitions. [2022-02-10 22:59:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:36,185 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:36,185 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] [2022-02-10 22:59:36,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-02-10 22:59:36,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:36,419 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1740204831, now seen corresponding path program 5 times [2022-02-10 22:59:36,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:36,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849590612] [2022-02-10 22:59:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:36,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:36,509 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 22:59:36,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:36,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849590612] [2022-02-10 22:59:36,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849590612] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:36,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849774204] [2022-02-10 22:59:36,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:59:36,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:36,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:36,511 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 22:59:36,512 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 22:59:36,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:59:36,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:36,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:36,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:36,747 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 22:59:36,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:36,991 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 22:59:36,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849774204] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:36,991 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:36,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-02-10 22:59:36,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860621449] [2022-02-10 22:59:36,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:36,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:59:36,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:59:36,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:59:36,995 INFO L87 Difference]: Start difference. First operand 696 states and 1777 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 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 22:59:38,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:38,117 INFO L93 Difference]: Finished difference Result 2222 states and 5753 transitions. [2022-02-10 22:59:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 22:59:38,118 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 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 70 [2022-02-10 22:59:38,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:38,126 INFO L225 Difference]: With dead ends: 2222 [2022-02-10 22:59:38,126 INFO L226 Difference]: Without dead ends: 2207 [2022-02-10 22:59:38,128 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1453, Invalid=5519, Unknown=0, NotChecked=0, Total=6972 [2022-02-10 22:59:38,130 INFO L934 BasicCegarLoop]: 155 mSDtfsCounter, 935 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:38,130 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1266 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:59:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2022-02-10 22:59:38,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 736. [2022-02-10 22:59:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.578231292517007) internal successors, (1895), 735 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1895 transitions. [2022-02-10 22:59:38,156 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1895 transitions. Word has length 70 [2022-02-10 22:59:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:38,156 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1895 transitions. [2022-02-10 22:59:38,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 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 22:59:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1895 transitions. [2022-02-10 22:59:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:38,158 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:38,158 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] [2022-02-10 22:59:38,198 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 22:59:38,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:38,372 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:38,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1015878651, now seen corresponding path program 6 times [2022-02-10 22:59:38,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:38,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585606531] [2022-02-10 22:59:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:38,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:38,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:38,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585606531] [2022-02-10 22:59:38,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585606531] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:38,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223761505] [2022-02-10 22:59:38,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:59:38,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:38,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:38,472 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 22:59:38,487 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 22:59:38,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 22:59:38,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:38,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:38,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:38,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:38,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223761505] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:38,943 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:38,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-02-10 22:59:38,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726536333] [2022-02-10 22:59:38,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:38,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:59:38,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:59:38,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:59:38,945 INFO L87 Difference]: Start difference. First operand 736 states and 1895 transitions. Second operand has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 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 22:59:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:39,397 INFO L93 Difference]: Finished difference Result 1526 states and 3939 transitions. [2022-02-10 22:59:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 22:59:39,397 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 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 70 [2022-02-10 22:59:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:39,402 INFO L225 Difference]: With dead ends: 1526 [2022-02-10 22:59:39,402 INFO L226 Difference]: Without dead ends: 1502 [2022-02-10 22:59:39,403 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=620, Invalid=2136, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 22:59:39,403 INFO L934 BasicCegarLoop]: 146 mSDtfsCounter, 718 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:39,403 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 1361 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-02-10 22:59:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 736. [2022-02-10 22:59:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.5673469387755103) internal successors, (1887), 735 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1887 transitions. [2022-02-10 22:59:39,420 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1887 transitions. Word has length 70 [2022-02-10 22:59:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:39,420 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1887 transitions. [2022-02-10 22:59:39,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 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 22:59:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1887 transitions. [2022-02-10 22:59:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:39,422 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:39,422 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] [2022-02-10 22:59:39,453 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 22:59:39,635 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,SelfDestructingSolverStorable9 [2022-02-10 22:59:39,638 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:39,638 INFO L85 PathProgramCache]: Analyzing trace with hash 221980705, now seen corresponding path program 7 times [2022-02-10 22:59:39,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:39,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717546451] [2022-02-10 22:59:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:39,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:39,707 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 22:59:39,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:39,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717546451] [2022-02-10 22:59:39,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717546451] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:39,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995612137] [2022-02-10 22:59:39,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:59:39,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:39,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:39,724 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 22:59:39,724 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 22:59:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:39,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:39,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:40,009 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 22:59:40,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:40,228 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 22:59:40,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995612137] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:40,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:40,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-10 22:59:40,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645684762] [2022-02-10 22:59:40,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:40,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:59:40,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:59:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:59:40,230 INFO L87 Difference]: Start difference. First operand 736 states and 1887 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:41,254 INFO L93 Difference]: Finished difference Result 2307 states and 5966 transitions. [2022-02-10 22:59:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 22:59:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:41,262 INFO L225 Difference]: With dead ends: 2307 [2022-02-10 22:59:41,262 INFO L226 Difference]: Without dead ends: 2277 [2022-02-10 22:59:41,264 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1262, Invalid=4900, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 22:59:41,264 INFO L934 BasicCegarLoop]: 155 mSDtfsCounter, 592 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:41,264 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1495 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:59:41,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-02-10 22:59:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 900. [2022-02-10 22:59:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 2.6407119021134595) internal successors, (2374), 899 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2374 transitions. [2022-02-10 22:59:41,284 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2374 transitions. Word has length 70 [2022-02-10 22:59:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:41,284 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2374 transitions. [2022-02-10 22:59:41,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2374 transitions. [2022-02-10 22:59:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:41,286 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:41,286 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] [2022-02-10 22:59:41,317 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 22:59:41,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:41,503 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1316903109, now seen corresponding path program 8 times [2022-02-10 22:59:41,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:41,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819689330] [2022-02-10 22:59:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:41,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:41,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:41,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819689330] [2022-02-10 22:59:41,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819689330] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:41,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861395217] [2022-02-10 22:59:41,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:59:41,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:41,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:41,584 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 22:59:41,593 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 22:59:41,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:59:41,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:41,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:41,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:41,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:42,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861395217] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:42,054 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:42,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-10 22:59:42,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978877576] [2022-02-10 22:59:42,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:42,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:59:42,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:59:42,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:59:42,056 INFO L87 Difference]: Start difference. First operand 900 states and 2374 transitions. Second operand has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:42,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:42,640 INFO L93 Difference]: Finished difference Result 2098 states and 5385 transitions. [2022-02-10 22:59:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 22:59:42,641 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:42,647 INFO L225 Difference]: With dead ends: 2098 [2022-02-10 22:59:42,647 INFO L226 Difference]: Without dead ends: 2050 [2022-02-10 22:59:42,648 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=663, Invalid=2529, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 22:59:42,649 INFO L934 BasicCegarLoop]: 134 mSDtfsCounter, 619 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:42,649 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 1291 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2022-02-10 22:59:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 916. [2022-02-10 22:59:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 2.625136612021858) internal successors, (2402), 915 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2402 transitions. [2022-02-10 22:59:42,668 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2402 transitions. Word has length 70 [2022-02-10 22:59:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:42,668 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2402 transitions. [2022-02-10 22:59:42,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2402 transitions. [2022-02-10 22:59:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:42,670 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:42,670 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] [2022-02-10 22:59:42,689 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 22:59:42,887 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,SelfDestructingSolverStorable11 [2022-02-10 22:59:42,887 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1472197725, now seen corresponding path program 9 times [2022-02-10 22:59:42,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:42,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139710725] [2022-02-10 22:59:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:42,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:42,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:42,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139710725] [2022-02-10 22:59:42,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139710725] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:42,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651142205] [2022-02-10 22:59:42,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:59:42,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:42,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:42,980 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 22:59:42,997 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 22:59:43,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 22:59:43,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:43,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:43,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:43,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:43,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651142205] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:43,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:43,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 22:59:43,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683974618] [2022-02-10 22:59:43,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:43,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:59:43,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:43,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:59:43,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-10 22:59:43,475 INFO L87 Difference]: Start difference. First operand 916 states and 2402 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:43,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:43,779 INFO L93 Difference]: Finished difference Result 1287 states and 3381 transitions. [2022-02-10 22:59:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:59:43,780 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 22:59:43,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:43,784 INFO L225 Difference]: With dead ends: 1287 [2022-02-10 22:59:43,784 INFO L226 Difference]: Without dead ends: 1251 [2022-02-10 22:59:43,784 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 22:59:43,784 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 379 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:43,785 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1300 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:43,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-02-10 22:59:43,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 928. [2022-02-10 22:59:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 2.626752966558792) internal successors, (2435), 927 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 2435 transitions. [2022-02-10 22:59:43,799 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 2435 transitions. Word has length 70 [2022-02-10 22:59:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:43,799 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 2435 transitions. [2022-02-10 22:59:43,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2435 transitions. [2022-02-10 22:59:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:43,801 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:43,801 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] [2022-02-10 22:59:43,822 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 22:59:44,017 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,SelfDestructingSolverStorable12 [2022-02-10 22:59:44,017 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:44,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash -313771491, now seen corresponding path program 10 times [2022-02-10 22:59:44,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:44,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700281867] [2022-02-10 22:59:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:44,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:44,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700281867] [2022-02-10 22:59:44,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700281867] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:44,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358414850] [2022-02-10 22:59:44,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:59:44,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:44,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:44,121 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 22:59:44,121 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 22:59:44,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:59:44,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:44,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:44,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:44,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358414850] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:44,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:44,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 22:59:44,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275245079] [2022-02-10 22:59:44,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:44,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:59:44,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:59:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-10 22:59:44,584 INFO L87 Difference]: Start difference. First operand 928 states and 2435 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:45,000 INFO L93 Difference]: Finished difference Result 1677 states and 4444 transitions. [2022-02-10 22:59:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 22:59:45,000 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 22:59:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:45,006 INFO L225 Difference]: With dead ends: 1677 [2022-02-10 22:59:45,006 INFO L226 Difference]: Without dead ends: 1641 [2022-02-10 22:59:45,006 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=1320, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 22:59:45,007 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 356 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:45,007 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1172 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-02-10 22:59:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 936. [2022-02-10 22:59:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 2.627807486631016) internal successors, (2457), 935 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 2457 transitions. [2022-02-10 22:59:45,024 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 2457 transitions. Word has length 70 [2022-02-10 22:59:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:45,024 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 2457 transitions. [2022-02-10 22:59:45,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 2457 transitions. [2022-02-10 22:59:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:45,026 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:45,026 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] [2022-02-10 22:59:45,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:45,243 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,SelfDestructingSolverStorable13 [2022-02-10 22:59:45,243 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338203, now seen corresponding path program 11 times [2022-02-10 22:59:45,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:45,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556310688] [2022-02-10 22:59:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:45,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:45,304 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 22:59:45,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:45,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556310688] [2022-02-10 22:59:45,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556310688] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:45,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345404840] [2022-02-10 22:59:45,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:59:45,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:45,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:45,306 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 22:59:45,349 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 22:59:45,371 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:59:45,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:45,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:45,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:45,556 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 22:59:45,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:45,736 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 22:59:45,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345404840] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:45,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:45,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-10 22:59:45,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440709645] [2022-02-10 22:59:45,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:45,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:59:45,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:59:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:59:45,738 INFO L87 Difference]: Start difference. First operand 936 states and 2457 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:46,676 INFO L93 Difference]: Finished difference Result 3265 states and 8631 transitions. [2022-02-10 22:59:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 22:59:46,677 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:46,694 INFO L225 Difference]: With dead ends: 3265 [2022-02-10 22:59:46,695 INFO L226 Difference]: Without dead ends: 3235 [2022-02-10 22:59:46,697 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1136, Invalid=4120, Unknown=0, NotChecked=0, Total=5256 [2022-02-10 22:59:46,698 INFO L934 BasicCegarLoop]: 132 mSDtfsCounter, 613 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:46,698 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1463 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:59:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-02-10 22:59:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1344. [2022-02-10 22:59:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 2.7513030528667164) internal successors, (3695), 1343 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 3695 transitions. [2022-02-10 22:59:46,733 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 3695 transitions. Word has length 70 [2022-02-10 22:59:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:46,733 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 3695 transitions. [2022-02-10 22:59:46,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 3695 transitions. [2022-02-10 22:59:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:46,735 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:46,735 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] [2022-02-10 22:59:46,769 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 22:59:46,952 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,SelfDestructingSolverStorable14 [2022-02-10 22:59:46,952 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:46,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1338745279, now seen corresponding path program 12 times [2022-02-10 22:59:46,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:46,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605699675] [2022-02-10 22:59:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:46,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:47,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:47,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605699675] [2022-02-10 22:59:47,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605699675] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:47,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534468225] [2022-02-10 22:59:47,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:59:47,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:47,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:47,036 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 22:59:47,037 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 22:59:47,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 22:59:47,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:47,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:47,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:47,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:47,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534468225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:47,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:47,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-02-10 22:59:47,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993211207] [2022-02-10 22:59:47,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:47,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:59:47,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:59:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:59:47,474 INFO L87 Difference]: Start difference. First operand 1344 states and 3695 transitions. Second operand has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:48,066 INFO L93 Difference]: Finished difference Result 3079 states and 8156 transitions. [2022-02-10 22:59:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 22:59:48,067 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:48,073 INFO L225 Difference]: With dead ends: 3079 [2022-02-10 22:59:48,073 INFO L226 Difference]: Without dead ends: 3031 [2022-02-10 22:59:48,074 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=694, Invalid=2498, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 22:59:48,074 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 782 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:48,074 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1283 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:48,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-02-10 22:59:48,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1340. [2022-02-10 22:59:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 2.745332337565347) internal successors, (3676), 1339 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 3676 transitions. [2022-02-10 22:59:48,104 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 3676 transitions. Word has length 70 [2022-02-10 22:59:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:48,104 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 3676 transitions. [2022-02-10 22:59:48,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 3676 transitions. [2022-02-10 22:59:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:48,107 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:48,107 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] [2022-02-10 22:59:48,151 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 22:59:48,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:48,312 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash -167121183, now seen corresponding path program 13 times [2022-02-10 22:59:48,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:48,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466668] [2022-02-10 22:59:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:48,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:48,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466668] [2022-02-10 22:59:48,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466668] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:48,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609193914] [2022-02-10 22:59:48,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:59:48,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:48,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:48,388 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 22:59:48,408 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 22:59:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:48,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:48,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:48,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:48,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609193914] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:48,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:48,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 22:59:48,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051053524] [2022-02-10 22:59:48,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:48,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:59:48,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:59:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-02-10 22:59:48,868 INFO L87 Difference]: Start difference. First operand 1340 states and 3676 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:49,743 INFO L93 Difference]: Finished difference Result 3774 states and 10220 transitions. [2022-02-10 22:59:49,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 22:59:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 22:59:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:49,750 INFO L225 Difference]: With dead ends: 3774 [2022-02-10 22:59:49,750 INFO L226 Difference]: Without dead ends: 3738 [2022-02-10 22:59:49,751 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=906, Invalid=3786, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 22:59:49,752 INFO L934 BasicCegarLoop]: 122 mSDtfsCounter, 752 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:49,752 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 1393 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2022-02-10 22:59:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2108. [2022-02-10 22:59:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.815377313716184) internal successors, (5932), 2107 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5932 transitions. [2022-02-10 22:59:49,792 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5932 transitions. Word has length 70 [2022-02-10 22:59:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:49,792 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5932 transitions. [2022-02-10 22:59:49,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5932 transitions. [2022-02-10 22:59:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:49,797 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:49,797 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] [2022-02-10 22:59:49,813 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 22:59:50,011 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,SelfDestructingSolverStorable16 [2022-02-10 22:59:50,011 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:50,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:50,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1676534515, now seen corresponding path program 14 times [2022-02-10 22:59:50,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:50,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560522849] [2022-02-10 22:59:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:50,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:50,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560522849] [2022-02-10 22:59:50,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560522849] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:50,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843175113] [2022-02-10 22:59:50,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:59:50,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:50,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:50,084 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 22:59:50,085 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 22:59:50,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:59:50,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:50,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:50,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:50,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:50,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843175113] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:50,535 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:50,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 22:59:50,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210258908] [2022-02-10 22:59:50,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:50,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:59:50,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:50,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:59:50,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-02-10 22:59:50,536 INFO L87 Difference]: Start difference. First operand 2108 states and 5932 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:50,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:50,797 INFO L93 Difference]: Finished difference Result 2346 states and 6507 transitions. [2022-02-10 22:59:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 22:59:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 22:59:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:50,801 INFO L225 Difference]: With dead ends: 2346 [2022-02-10 22:59:50,801 INFO L226 Difference]: Without dead ends: 2298 [2022-02-10 22:59:50,802 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 22:59:50,802 INFO L934 BasicCegarLoop]: 111 mSDtfsCounter, 319 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:50,802 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1069 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:59:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-02-10 22:59:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2108. [2022-02-10 22:59:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.813478879924063) internal successors, (5928), 2107 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5928 transitions. [2022-02-10 22:59:50,859 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5928 transitions. Word has length 70 [2022-02-10 22:59:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:50,859 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5928 transitions. [2022-02-10 22:59:50,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5928 transitions. [2022-02-10 22:59:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:50,863 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:50,863 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] [2022-02-10 22:59:50,888 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 22:59:51,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 22:59:51,088 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash -570914211, now seen corresponding path program 15 times [2022-02-10 22:59:51,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:51,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242373496] [2022-02-10 22:59:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:51,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:51,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242373496] [2022-02-10 22:59:51,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242373496] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:51,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847722984] [2022-02-10 22:59:51,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:59:51,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:51,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:51,178 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 22:59:51,179 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 22:59:51,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 22:59:51,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:51,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:51,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:51,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:51,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847722984] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:51,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:51,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 22:59:51,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421865403] [2022-02-10 22:59:51,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:51,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:59:51,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:59:51,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-10 22:59:51,604 INFO L87 Difference]: Start difference. First operand 2108 states and 5928 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:52,151 INFO L93 Difference]: Finished difference Result 3337 states and 9298 transitions. [2022-02-10 22:59:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 22:59:52,151 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 22:59:52,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:52,157 INFO L225 Difference]: With dead ends: 3337 [2022-02-10 22:59:52,157 INFO L226 Difference]: Without dead ends: 3253 [2022-02-10 22:59:52,158 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=1988, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 22:59:52,158 INFO L934 BasicCegarLoop]: 118 mSDtfsCounter, 337 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:52,159 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1471 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2022-02-10 22:59:52,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2316. [2022-02-10 22:59:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2315 states have (on average 2.819870410367171) internal successors, (6528), 2315 states have internal predecessors, (6528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 6528 transitions. [2022-02-10 22:59:52,196 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 6528 transitions. Word has length 70 [2022-02-10 22:59:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:52,196 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 6528 transitions. [2022-02-10 22:59:52,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 6528 transitions. [2022-02-10 22:59:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:52,200 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:52,200 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] [2022-02-10 22:59:52,216 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 22:59:52,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:52,416 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:52,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:52,417 INFO L85 PathProgramCache]: Analyzing trace with hash -424263903, now seen corresponding path program 16 times [2022-02-10 22:59:52,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:52,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469042744] [2022-02-10 22:59:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:52,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:52,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469042744] [2022-02-10 22:59:52,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469042744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:52,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370081028] [2022-02-10 22:59:52,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:59:52,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:52,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:52,491 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 22:59:52,516 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 22:59:52,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:59:52,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:52,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:52,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:52,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:52,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370081028] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:52,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:52,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 22:59:52,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617431630] [2022-02-10 22:59:52,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:52,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:59:52,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:52,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:59:52,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-02-10 22:59:52,921 INFO L87 Difference]: Start difference. First operand 2316 states and 6528 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:53,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:53,566 INFO L93 Difference]: Finished difference Result 4519 states and 12420 transitions. [2022-02-10 22:59:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 22:59:53,567 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 22:59:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:53,573 INFO L225 Difference]: With dead ends: 4519 [2022-02-10 22:59:53,574 INFO L226 Difference]: Without dead ends: 4435 [2022-02-10 22:59:53,574 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=650, Invalid=2542, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 22:59:53,575 INFO L934 BasicCegarLoop]: 103 mSDtfsCounter, 620 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:53,575 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1335 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2022-02-10 22:59:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 1840. [2022-02-10 22:59:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 2.809679173463839) internal successors, (5167), 1839 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 5167 transitions. [2022-02-10 22:59:53,613 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 5167 transitions. Word has length 70 [2022-02-10 22:59:53,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:53,613 INFO L470 AbstractCegarLoop]: Abstraction has 1840 states and 5167 transitions. [2022-02-10 22:59:53,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 22:59:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 5167 transitions. [2022-02-10 22:59:53,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:53,616 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:53,616 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] [2022-02-10 22:59:53,649 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 22:59:53,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:53,850 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1419391795, now seen corresponding path program 17 times [2022-02-10 22:59:53,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:53,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713849164] [2022-02-10 22:59:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:53,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:53,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:53,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713849164] [2022-02-10 22:59:53,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713849164] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:53,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061448944] [2022-02-10 22:59:53,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:59:53,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:53,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:53,912 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 22:59:53,940 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 22:59:53,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 22:59:53,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:53,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 22:59:53,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:54,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:54,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061448944] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:54,275 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:54,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2022-02-10 22:59:54,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912329259] [2022-02-10 22:59:54,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:54,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:59:54,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:59:54,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:59:54,277 INFO L87 Difference]: Start difference. First operand 1840 states and 5167 transitions. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:54,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:54,564 INFO L93 Difference]: Finished difference Result 2482 states and 6932 transitions. [2022-02-10 22:59:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:59:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:54,568 INFO L225 Difference]: With dead ends: 2482 [2022-02-10 22:59:54,568 INFO L226 Difference]: Without dead ends: 2434 [2022-02-10 22:59:54,569 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:59:54,569 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 250 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:54,570 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 679 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:59:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-02-10 22:59:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1832. [2022-02-10 22:59:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 2.8099399235390496) internal successors, (5145), 1831 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:54,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 5145 transitions. [2022-02-10 22:59:54,599 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 5145 transitions. Word has length 70 [2022-02-10 22:59:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:54,599 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 5145 transitions. [2022-02-10 22:59:54,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:54,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 5145 transitions. [2022-02-10 22:59:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:54,603 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:54,603 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] [2022-02-10 22:59:54,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:54,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:54,819 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash -490468571, now seen corresponding path program 18 times [2022-02-10 22:59:54,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:54,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973718507] [2022-02-10 22:59:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:54,921 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 22:59:54,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:54,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973718507] [2022-02-10 22:59:54,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973718507] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:54,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178004768] [2022-02-10 22:59:54,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:59:54,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:54,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:54,923 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 22:59:54,924 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 22:59:54,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:59:54,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:54,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 22:59:54,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:55,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:55,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178004768] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:55,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:55,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2022-02-10 22:59:55,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126613740] [2022-02-10 22:59:55,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:55,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 22:59:55,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 22:59:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-02-10 22:59:55,353 INFO L87 Difference]: Start difference. First operand 1832 states and 5145 transitions. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 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 22:59:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:55,891 INFO L93 Difference]: Finished difference Result 2986 states and 8110 transitions. [2022-02-10 22:59:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 22:59:55,891 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 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 70 [2022-02-10 22:59:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:55,895 INFO L225 Difference]: With dead ends: 2986 [2022-02-10 22:59:55,895 INFO L226 Difference]: Without dead ends: 2956 [2022-02-10 22:59:55,896 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=557, Invalid=2095, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 22:59:55,897 INFO L934 BasicCegarLoop]: 123 mSDtfsCounter, 429 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:55,897 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1432 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:59:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-02-10 22:59:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2000. [2022-02-10 22:59:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.8269134567283642) internal successors, (5651), 1999 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5651 transitions. [2022-02-10 22:59:55,924 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5651 transitions. Word has length 70 [2022-02-10 22:59:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:55,925 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5651 transitions. [2022-02-10 22:59:55,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 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 22:59:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5651 transitions. [2022-02-10 22:59:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:55,928 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:55,928 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] [2022-02-10 22:59:55,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:56,143 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,SelfDestructingSolverStorable21 [2022-02-10 22:59:56,143 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash 43752443, now seen corresponding path program 19 times [2022-02-10 22:59:56,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:56,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210476045] [2022-02-10 22:59:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:56,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:56,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210476045] [2022-02-10 22:59:56,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210476045] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:56,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178122656] [2022-02-10 22:59:56,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:59:56,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:56,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:56,221 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 22:59:56,222 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 22:59:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:56,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:56,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:56,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:56,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178122656] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:56,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:56,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-10 22:59:56,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349962421] [2022-02-10 22:59:56,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:56,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:59:56,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:59:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:59:56,646 INFO L87 Difference]: Start difference. First operand 2000 states and 5651 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 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 22:59:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:56,978 INFO L93 Difference]: Finished difference Result 2623 states and 7248 transitions. [2022-02-10 22:59:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 22:59:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 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 70 [2022-02-10 22:59:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:56,992 INFO L225 Difference]: With dead ends: 2623 [2022-02-10 22:59:56,992 INFO L226 Difference]: Without dead ends: 2575 [2022-02-10 22:59:56,992 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 22:59:56,993 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 442 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:56,993 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 712 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2022-02-10 22:59:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2184. [2022-02-10 22:59:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.836921667430142) internal successors, (6193), 2183 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:57,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6193 transitions. [2022-02-10 22:59:57,021 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6193 transitions. Word has length 70 [2022-02-10 22:59:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:57,021 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6193 transitions. [2022-02-10 22:59:57,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 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 22:59:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6193 transitions. [2022-02-10 22:59:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:57,024 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:57,024 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] [2022-02-10 22:59:57,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-10 22:59:57,231 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,SelfDestructingSolverStorable22 [2022-02-10 22:59:57,232 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 185043233, now seen corresponding path program 20 times [2022-02-10 22:59:57,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:57,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341948] [2022-02-10 22:59:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:57,342 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 22:59:57,342 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:57,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341948] [2022-02-10 22:59:57,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341948] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:57,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184337979] [2022-02-10 22:59:57,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:59:57,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:57,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:57,344 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 22:59:57,377 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 22:59:57,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:59:57,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:57,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:57,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:57,619 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 22:59:57,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:59:57,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184337979] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:57,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:57,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-10 22:59:57,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584044242] [2022-02-10 22:59:57,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:57,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:59:57,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:57,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:59:57,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:59:57,774 INFO L87 Difference]: Start difference. First operand 2184 states and 6193 transitions. Second operand has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:58,232 INFO L93 Difference]: Finished difference Result 3459 states and 9481 transitions. [2022-02-10 22:59:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 22:59:58,232 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:58,237 INFO L225 Difference]: With dead ends: 3459 [2022-02-10 22:59:58,238 INFO L226 Difference]: Without dead ends: 3429 [2022-02-10 22:59:58,238 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=494, Invalid=1858, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 22:59:58,239 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 356 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:58,239 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1151 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2022-02-10 22:59:58,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2476. [2022-02-10 22:59:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2475 states have (on average 2.850909090909091) internal successors, (7056), 2475 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 7056 transitions. [2022-02-10 22:59:58,277 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 7056 transitions. Word has length 70 [2022-02-10 22:59:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:58,277 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 7056 transitions. [2022-02-10 22:59:58,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 7056 transitions. [2022-02-10 22:59:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:58,281 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:58,281 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] [2022-02-10 22:59:58,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:58,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:58,499 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:58,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1353840581, now seen corresponding path program 21 times [2022-02-10 22:59:58,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:58,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386946106] [2022-02-10 22:59:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:58,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:58,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386946106] [2022-02-10 22:59:58,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386946106] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:58,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165567857] [2022-02-10 22:59:58,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:59:58,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:58,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:58,571 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 22:59:58,576 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 22:59:58,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 22:59:58,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:58,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:58,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:58,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:58,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165567857] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:58,966 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:58,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-10 22:59:58,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049338403] [2022-02-10 22:59:58,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:58,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:59:58,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:59:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:59:58,967 INFO L87 Difference]: Start difference. First operand 2476 states and 7056 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:59,379 INFO L93 Difference]: Finished difference Result 3275 states and 9012 transitions. [2022-02-10 22:59:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 22:59:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 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 70 [2022-02-10 22:59:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:59,385 INFO L225 Difference]: With dead ends: 3275 [2022-02-10 22:59:59,385 INFO L226 Difference]: Without dead ends: 3227 [2022-02-10 22:59:59,386 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:59:59,386 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 491 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:59,386 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 922 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:59:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-02-10 22:59:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2344. [2022-02-10 22:59:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-10 22:59:59,444 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-10 22:59:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:59,445 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-10 22:59:59,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-10 22:59:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:59:59,448 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:59,448 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] [2022-02-10 22:59:59,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:59,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:59,665 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:59:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:59,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1435260253, now seen corresponding path program 22 times [2022-02-10 22:59:59,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:59,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852227056] [2022-02-10 22:59:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:59,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:59,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:59,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852227056] [2022-02-10 22:59:59,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852227056] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:59,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646958986] [2022-02-10 22:59:59,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:59:59,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:59,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:59,741 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 22:59:59,741 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 22:59:59,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:59:59,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:59,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:59:59,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:59,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:00,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646958986] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:00,091 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:00,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 23:00:00,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281546830] [2022-02-10 23:00:00,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:00,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:00:00,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:00:00,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:00:00,092 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 23:00:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:00,456 INFO L93 Difference]: Finished difference Result 2869 states and 7974 transitions. [2022-02-10 23:00:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:00:00,456 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 23:00:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:00,460 INFO L225 Difference]: With dead ends: 2869 [2022-02-10 23:00:00,460 INFO L226 Difference]: Without dead ends: 2797 [2022-02-10 23:00:00,461 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=1620, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 23:00:00,461 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 346 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:00,462 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1244 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:00:00,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-02-10 23:00:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2348. [2022-02-10 23:00:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2347 states have (on average 2.8410737111205795) internal successors, (6668), 2347 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 23:00:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 6668 transitions. [2022-02-10 23:00:00,498 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 6668 transitions. Word has length 70 [2022-02-10 23:00:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:00,498 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 6668 transitions. [2022-02-10 23:00:00,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 23:00:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 6668 transitions. [2022-02-10 23:00:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 23:00:00,501 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:00,502 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] [2022-02-10 23:00:00,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-10 23:00:00,717 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,SelfDestructingSolverStorable25 [2022-02-10 23:00:00,718 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash 331693541, now seen corresponding path program 23 times [2022-02-10 23:00:00,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:00,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672939826] [2022-02-10 23:00:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:00,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:00,782 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 23:00:00,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:00,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672939826] [2022-02-10 23:00:00,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672939826] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:00,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800289220] [2022-02-10 23:00:00,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:00:00,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:00,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:00,784 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 23:00:00,785 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 23:00:00,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:00:00,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 23:00:00,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:01,037 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 23:00:01,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:00:01,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800289220] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:01,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:01,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-10 23:00:01,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533703971] [2022-02-10 23:00:01,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:01,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 23:00:01,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:01,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 23:00:01,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:00:01,208 INFO L87 Difference]: Start difference. First operand 2348 states and 6668 transitions. Second operand has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:01,725 INFO L93 Difference]: Finished difference Result 3827 states and 10486 transitions. [2022-02-10 23:00:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 23:00:01,726 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 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 70 [2022-02-10 23:00:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:01,731 INFO L225 Difference]: With dead ends: 3827 [2022-02-10 23:00:01,732 INFO L226 Difference]: Without dead ends: 3797 [2022-02-10 23:00:01,732 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=562, Invalid=1988, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 23:00:01,733 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 534 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:01,733 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 943 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:00:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-02-10 23:00:01,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2672. [2022-02-10 23:00:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2671 states have (on average 2.868962935230251) internal successors, (7663), 2671 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 7663 transitions. [2022-02-10 23:00:01,776 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 7663 transitions. Word has length 70 [2022-02-10 23:00:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:01,776 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 7663 transitions. [2022-02-10 23:00:01,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 7663 transitions. [2022-02-10 23:00:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 23:00:01,780 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:01,780 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] [2022-02-10 23:00:01,807 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 23:00:01,993 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,SelfDestructingSolverStorable26 [2022-02-10 23:00:01,994 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1207190273, now seen corresponding path program 24 times [2022-02-10 23:00:01,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:01,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110986151] [2022-02-10 23:00:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:02,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:02,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110986151] [2022-02-10 23:00:02,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110986151] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:02,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861296998] [2022-02-10 23:00:02,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:00:02,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:02,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:02,081 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 23:00:02,082 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 23:00:02,137 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:00:02,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:02,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 23:00:02,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:02,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:02,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861296998] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:02,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:02,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-02-10 23:00:02,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655249445] [2022-02-10 23:00:02,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:02,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 23:00:02,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:02,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 23:00:02,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:00:02,468 INFO L87 Difference]: Start difference. First operand 2672 states and 7663 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:02,953 INFO L93 Difference]: Finished difference Result 3690 states and 10156 transitions. [2022-02-10 23:00:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 23:00:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 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 70 [2022-02-10 23:00:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:02,958 INFO L225 Difference]: With dead ends: 3690 [2022-02-10 23:00:02,959 INFO L226 Difference]: Without dead ends: 3642 [2022-02-10 23:00:02,959 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=418, Invalid=1562, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 23:00:02,959 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 427 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:02,959 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 1300 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:00:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2022-02-10 23:00:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 2464. [2022-02-10 23:00:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 2.8400324807145756) internal successors, (6995), 2463 states have internal predecessors, (6995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 6995 transitions. [2022-02-10 23:00:03,013 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 6995 transitions. Word has length 70 [2022-02-10 23:00:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:03,014 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 6995 transitions. [2022-02-10 23:00:03,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 6995 transitions. [2022-02-10 23:00:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 23:00:03,017 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:03,017 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] [2022-02-10 23:00:03,035 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 23:00:03,233 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,SelfDestructingSolverStorable27 [2022-02-10 23:00:03,233 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1581910561, now seen corresponding path program 25 times [2022-02-10 23:00:03,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:03,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380121651] [2022-02-10 23:00:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:03,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:03,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380121651] [2022-02-10 23:00:03,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380121651] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:03,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330645425] [2022-02-10 23:00:03,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:00:03,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:03,320 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 23:00:03,322 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 23:00:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:03,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 23:00:03,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:03,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:03,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330645425] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:03,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:03,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 23:00:03,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083209814] [2022-02-10 23:00:03,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:03,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:00:03,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:00:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:00:03,708 INFO L87 Difference]: Start difference. First operand 2464 states and 6995 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 23:00:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:04,265 INFO L93 Difference]: Finished difference Result 3768 states and 10314 transitions. [2022-02-10 23:00:04,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 23:00:04,265 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 23:00:04,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:04,271 INFO L225 Difference]: With dead ends: 3768 [2022-02-10 23:00:04,271 INFO L226 Difference]: Without dead ends: 3696 [2022-02-10 23:00:04,271 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=507, Invalid=2145, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 23:00:04,272 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 534 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:04,272 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1259 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:00:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2022-02-10 23:00:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 2344. [2022-02-10 23:00:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-10 23:00:04,313 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-10 23:00:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:04,314 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-10 23:00:04,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 23:00:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-10 23:00:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 23:00:04,317 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:04,317 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] [2022-02-10 23:00:04,337 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 23:00:04,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 23:00:04,537 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:04,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash -869401037, now seen corresponding path program 26 times [2022-02-10 23:00:04,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:04,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961473902] [2022-02-10 23:00:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:04,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:04,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961473902] [2022-02-10 23:00:04,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961473902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:04,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155322276] [2022-02-10 23:00:04,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:00:04,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:04,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:04,637 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 23:00:04,664 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 23:00:04,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:00:04,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:04,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 23:00:04,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:04,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:05,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155322276] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:05,062 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:05,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-02-10 23:00:05,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248173089] [2022-02-10 23:00:05,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:05,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:00:05,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:00:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:00:05,063 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 23:00:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:05,239 INFO L93 Difference]: Finished difference Result 2575 states and 7190 transitions. [2022-02-10 23:00:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 23:00:05,239 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 70 [2022-02-10 23:00:05,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:05,242 INFO L225 Difference]: With dead ends: 2575 [2022-02-10 23:00:05,242 INFO L226 Difference]: Without dead ends: 2527 [2022-02-10 23:00:05,242 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:00:05,243 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 270 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:05,243 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1036 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:00:05,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-02-10 23:00:05,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2344. [2022-02-10 23:00:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-02-10 23:00:05,267 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-02-10 23:00:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:05,267 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-02-10 23:00:05,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 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 23:00:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-02-10 23:00:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 23:00:05,270 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:05,271 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 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] [2022-02-10 23:00:05,287 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 23:00:05,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:05,473 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:05,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:05,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1026824483, now seen corresponding path program 27 times [2022-02-10 23:00:05,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:05,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121758043] [2022-02-10 23:00:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:05,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:05,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:05,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121758043] [2022-02-10 23:00:05,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121758043] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:05,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784966642] [2022-02-10 23:00:05,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:00:05,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:05,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:05,584 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 23:00:05,586 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 23:00:05,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:00:05,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:05,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:00:05,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:05,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:05,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784966642] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:05,957 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:05,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 14 [2022-02-10 23:00:05,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865682470] [2022-02-10 23:00:05,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:05,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 23:00:05,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 23:00:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:00:05,958 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:06,108 INFO L93 Difference]: Finished difference Result 5997 states and 17257 transitions. [2022-02-10 23:00:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 23:00:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 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 72 [2022-02-10 23:00:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:06,117 INFO L225 Difference]: With dead ends: 5997 [2022-02-10 23:00:06,118 INFO L226 Difference]: Without dead ends: 5679 [2022-02-10 23:00:06,118 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-02-10 23:00:06,118 INFO L934 BasicCegarLoop]: 134 mSDtfsCounter, 329 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:06,118 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 943 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:00:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2022-02-10 23:00:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 3407. [2022-02-10 23:00:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 2.8755137991779214) internal successors, (9794), 3406 states have internal predecessors, (9794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 9794 transitions. [2022-02-10 23:00:06,182 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 9794 transitions. Word has length 72 [2022-02-10 23:00:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:06,183 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 9794 transitions. [2022-02-10 23:00:06,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 9794 transitions. [2022-02-10 23:00:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 23:00:06,188 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:06,188 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 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] [2022-02-10 23:00:06,204 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 23:00:06,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:06,392 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash -185719417, now seen corresponding path program 28 times [2022-02-10 23:00:06,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:06,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410295610] [2022-02-10 23:00:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:06,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:06,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:06,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410295610] [2022-02-10 23:00:06,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410295610] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:06,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736620595] [2022-02-10 23:00:06,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:00:06,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:06,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:06,535 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 23:00:06,576 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 23:00:06,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:00:06,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:06,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 23:00:06,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:06,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:07,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736620595] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:07,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:07,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 23:00:07,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104049512] [2022-02-10 23:00:07,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:07,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:00:07,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:07,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:00:07,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:00:07,405 INFO L87 Difference]: Start difference. First operand 3407 states and 9794 transitions. Second operand has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:08,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:08,808 INFO L93 Difference]: Finished difference Result 5692 states and 16101 transitions. [2022-02-10 23:00:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 23:00:08,808 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 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 72 [2022-02-10 23:00:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:08,816 INFO L225 Difference]: With dead ends: 5692 [2022-02-10 23:00:08,817 INFO L226 Difference]: Without dead ends: 5647 [2022-02-10 23:00:08,818 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=989, Invalid=5653, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 23:00:08,818 INFO L934 BasicCegarLoop]: 195 mSDtfsCounter, 435 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:08,818 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 2289 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:00:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2022-02-10 23:00:08,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 4007. [2022-02-10 23:00:08,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 4006 states have (on average 2.8866699950074888) internal successors, (11564), 4006 states have internal predecessors, (11564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 11564 transitions. [2022-02-10 23:00:08,880 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 11564 transitions. Word has length 72 [2022-02-10 23:00:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:08,880 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 11564 transitions. [2022-02-10 23:00:08,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 11564 transitions. [2022-02-10 23:00:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:08,886 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:08,886 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:08,902 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 23:00:09,101 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,SelfDestructingSolverStorable31 [2022-02-10 23:00:09,102 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1623433347, now seen corresponding path program 29 times [2022-02-10 23:00:09,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:09,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327839705] [2022-02-10 23:00:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:09,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:09,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:09,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327839705] [2022-02-10 23:00:09,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327839705] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:09,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158771722] [2022-02-10 23:00:09,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:00:09,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:09,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:09,232 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 23:00:09,255 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 23:00:09,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:00:09,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:09,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:09,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:09,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:09,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158771722] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:09,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:09,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 31 [2022-02-10 23:00:09,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573762198] [2022-02-10 23:00:09,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:09,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:09,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:09,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:09,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:09,885 INFO L87 Difference]: Start difference. First operand 4007 states and 11564 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:11,091 INFO L93 Difference]: Finished difference Result 7384 states and 21033 transitions. [2022-02-10 23:00:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-10 23:00:11,091 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:11,104 INFO L225 Difference]: With dead ends: 7384 [2022-02-10 23:00:11,104 INFO L226 Difference]: Without dead ends: 7339 [2022-02-10 23:00:11,105 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3050 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2222, Invalid=8080, Unknown=0, NotChecked=0, Total=10302 [2022-02-10 23:00:11,106 INFO L934 BasicCegarLoop]: 237 mSDtfsCounter, 876 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:11,106 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 2685 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:00:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2022-02-10 23:00:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 4149. [2022-02-10 23:00:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4149 states, 4148 states have (on average 2.882835101253616) internal successors, (11958), 4148 states have internal predecessors, (11958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 11958 transitions. [2022-02-10 23:00:11,195 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 11958 transitions. Word has length 77 [2022-02-10 23:00:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:11,195 INFO L470 AbstractCegarLoop]: Abstraction has 4149 states and 11958 transitions. [2022-02-10 23:00:11,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 11958 transitions. [2022-02-10 23:00:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:11,202 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:11,202 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:11,220 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 23:00:11,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:11,404 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:11,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1870223975, now seen corresponding path program 30 times [2022-02-10 23:00:11,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:11,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42902462] [2022-02-10 23:00:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:11,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:11,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42902462] [2022-02-10 23:00:11,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42902462] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:11,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272368421] [2022-02-10 23:00:11,524 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:00:11,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:11,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:11,525 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 23:00:11,526 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 23:00:11,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:00:11,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:11,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:00:11,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:11,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:12,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272368421] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:12,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:12,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-02-10 23:00:12,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419651720] [2022-02-10 23:00:12,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:12,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 23:00:12,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 23:00:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:00:12,058 INFO L87 Difference]: Start difference. First operand 4149 states and 11958 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:13,621 INFO L93 Difference]: Finished difference Result 7597 states and 21455 transitions. [2022-02-10 23:00:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-10 23:00:13,622 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:13,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:13,636 INFO L225 Difference]: With dead ends: 7597 [2022-02-10 23:00:13,636 INFO L226 Difference]: Without dead ends: 7552 [2022-02-10 23:00:13,638 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3856 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1951, Invalid=10481, Unknown=0, NotChecked=0, Total=12432 [2022-02-10 23:00:13,638 INFO L934 BasicCegarLoop]: 234 mSDtfsCounter, 781 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:13,638 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 3145 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2022-02-10 23:00:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 4165. [2022-02-10 23:00:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 4164 states have (on average 2.882324687800192) internal successors, (12002), 4164 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 12002 transitions. [2022-02-10 23:00:13,720 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 12002 transitions. Word has length 77 [2022-02-10 23:00:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:13,721 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 12002 transitions. [2022-02-10 23:00:13,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 12002 transitions. [2022-02-10 23:00:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:13,728 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:13,728 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:13,745 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 23:00:13,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:13,937 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1259138339, now seen corresponding path program 31 times [2022-02-10 23:00:13,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:13,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578771981] [2022-02-10 23:00:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:13,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:14,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:14,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578771981] [2022-02-10 23:00:14,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578771981] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:14,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330740193] [2022-02-10 23:00:14,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:00:14,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:14,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:14,132 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 23:00:14,133 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 23:00:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:14,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:14,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:14,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:14,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330740193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:14,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:14,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-02-10 23:00:14,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274484425] [2022-02-10 23:00:14,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:14,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 23:00:14,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 23:00:14,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:00:14,855 INFO L87 Difference]: Start difference. First operand 4165 states and 12002 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:16,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:16,438 INFO L93 Difference]: Finished difference Result 7442 states and 21104 transitions. [2022-02-10 23:00:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-10 23:00:16,438 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:16,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:16,450 INFO L225 Difference]: With dead ends: 7442 [2022-02-10 23:00:16,451 INFO L226 Difference]: Without dead ends: 7397 [2022-02-10 23:00:16,452 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3920 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2390, Invalid=10266, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 23:00:16,453 INFO L934 BasicCegarLoop]: 215 mSDtfsCounter, 852 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:16,453 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 2527 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:00:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2022-02-10 23:00:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 4181. [2022-02-10 23:00:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4181 states, 4180 states have (on average 2.881818181818182) internal successors, (12046), 4180 states have internal predecessors, (12046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 12046 transitions. [2022-02-10 23:00:16,542 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 12046 transitions. Word has length 77 [2022-02-10 23:00:16,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:16,543 INFO L470 AbstractCegarLoop]: Abstraction has 4181 states and 12046 transitions. [2022-02-10 23:00:16,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 12046 transitions. [2022-02-10 23:00:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:16,552 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:16,552 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:16,569 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 23:00:16,759 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,SelfDestructingSolverStorable34 [2022-02-10 23:00:16,760 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:16,760 INFO L85 PathProgramCache]: Analyzing trace with hash -962724129, now seen corresponding path program 32 times [2022-02-10 23:00:16,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:16,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361590637] [2022-02-10 23:00:16,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:16,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:16,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:16,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361590637] [2022-02-10 23:00:16,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361590637] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:16,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118000151] [2022-02-10 23:00:16,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:00:16,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:16,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:16,860 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 23:00:16,861 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 23:00:16,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:00:16,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:16,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:00:16,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:17,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:17,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118000151] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:17,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:17,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-10 23:00:17,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168913106] [2022-02-10 23:00:17,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:17,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:00:17,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:00:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:00:17,417 INFO L87 Difference]: Start difference. First operand 4181 states and 12046 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:19,956 INFO L93 Difference]: Finished difference Result 8898 states and 24913 transitions. [2022-02-10 23:00:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-10 23:00:19,956 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:19,970 INFO L225 Difference]: With dead ends: 8898 [2022-02-10 23:00:19,970 INFO L226 Difference]: Without dead ends: 8883 [2022-02-10 23:00:19,971 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7666 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3616, Invalid=18140, Unknown=0, NotChecked=0, Total=21756 [2022-02-10 23:00:19,971 INFO L934 BasicCegarLoop]: 242 mSDtfsCounter, 1270 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:19,977 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 3069 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:19,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-02-10 23:00:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 4189. [2022-02-10 23:00:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 2.883476599808978) internal successors, (12076), 4188 states have internal predecessors, (12076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12076 transitions. [2022-02-10 23:00:20,066 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12076 transitions. Word has length 77 [2022-02-10 23:00:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:20,066 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12076 transitions. [2022-02-10 23:00:20,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12076 transitions. [2022-02-10 23:00:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:20,071 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:20,072 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:20,088 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 23:00:20,288 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,SelfDestructingSolverStorable35 [2022-02-10 23:00:20,288 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1793359353, now seen corresponding path program 33 times [2022-02-10 23:00:20,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:20,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528290739] [2022-02-10 23:00:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:20,409 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:20,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528290739] [2022-02-10 23:00:20,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528290739] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:20,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918492989] [2022-02-10 23:00:20,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:00:20,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:20,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:20,410 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 23:00:20,411 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 23:00:20,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:00:20,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:20,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:20,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:20,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:20,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918492989] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:20,996 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:20,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 33 [2022-02-10 23:00:20,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744491772] [2022-02-10 23:00:20,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:20,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 23:00:20,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:20,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 23:00:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 23:00:20,997 INFO L87 Difference]: Start difference. First operand 4189 states and 12076 transitions. Second operand has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:23,270 INFO L93 Difference]: Finished difference Result 8616 states and 24405 transitions. [2022-02-10 23:00:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-10 23:00:23,270 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:23,306 INFO L225 Difference]: With dead ends: 8616 [2022-02-10 23:00:23,306 INFO L226 Difference]: Without dead ends: 8592 [2022-02-10 23:00:23,307 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6282 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3113, Invalid=15247, Unknown=0, NotChecked=0, Total=18360 [2022-02-10 23:00:23,307 INFO L934 BasicCegarLoop]: 229 mSDtfsCounter, 1422 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:23,307 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 3091 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-02-10 23:00:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 4189. [2022-02-10 23:00:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 2.8815663801337155) internal successors, (12068), 4188 states have internal predecessors, (12068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12068 transitions. [2022-02-10 23:00:23,386 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12068 transitions. Word has length 77 [2022-02-10 23:00:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:23,386 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12068 transitions. [2022-02-10 23:00:23,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12068 transitions. [2022-02-10 23:00:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:23,392 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:23,392 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:23,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:23,604 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,SelfDestructingSolverStorable36 [2022-02-10 23:00:23,604 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:23,605 INFO L85 PathProgramCache]: Analyzing trace with hash 802013543, now seen corresponding path program 34 times [2022-02-10 23:00:23,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:23,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910599196] [2022-02-10 23:00:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:23,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:23,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:23,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910599196] [2022-02-10 23:00:23,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910599196] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:23,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434323409] [2022-02-10 23:00:23,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:00:23,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:23,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:23,713 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 23:00:23,714 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 23:00:23,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:00:23,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:23,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:23,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:23,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:24,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434323409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:24,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:24,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 34 [2022-02-10 23:00:24,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136302747] [2022-02-10 23:00:24,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:24,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 23:00:24,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 23:00:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:00:24,246 INFO L87 Difference]: Start difference. First operand 4189 states and 12068 transitions. Second operand has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:24,928 INFO L93 Difference]: Finished difference Result 6740 states and 19159 transitions. [2022-02-10 23:00:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 23:00:24,928 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:24,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:24,939 INFO L225 Difference]: With dead ends: 6740 [2022-02-10 23:00:24,939 INFO L226 Difference]: Without dead ends: 6695 [2022-02-10 23:00:24,940 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1024, Invalid=4526, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 23:00:24,941 INFO L934 BasicCegarLoop]: 190 mSDtfsCounter, 647 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:24,963 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 2317 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:00:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2022-02-10 23:00:25,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 4197. [2022-02-10 23:00:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 2.8813155386081983) internal successors, (12090), 4196 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 12090 transitions. [2022-02-10 23:00:25,049 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 12090 transitions. Word has length 77 [2022-02-10 23:00:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:25,049 INFO L470 AbstractCegarLoop]: Abstraction has 4197 states and 12090 transitions. [2022-02-10 23:00:25,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 12090 transitions. [2022-02-10 23:00:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:25,055 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:25,055 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:25,071 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 23:00:25,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:25,272 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash 190927907, now seen corresponding path program 35 times [2022-02-10 23:00:25,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:25,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625501167] [2022-02-10 23:00:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:25,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:25,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:25,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625501167] [2022-02-10 23:00:25,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625501167] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:25,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216996508] [2022-02-10 23:00:25,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:00:25,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:25,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:25,480 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 23:00:25,481 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 23:00:25,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:00:25,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:25,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:25,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:25,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:26,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216996508] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:26,218 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:26,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-02-10 23:00:26,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579583089] [2022-02-10 23:00:26,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:26,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 23:00:26,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:26,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 23:00:26,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:00:26,219 INFO L87 Difference]: Start difference. First operand 4197 states and 12090 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:28,416 INFO L93 Difference]: Finished difference Result 10164 states and 28356 transitions. [2022-02-10 23:00:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-10 23:00:28,416 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:28,431 INFO L225 Difference]: With dead ends: 10164 [2022-02-10 23:00:28,431 INFO L226 Difference]: Without dead ends: 10014 [2022-02-10 23:00:28,432 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5513 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3441, Invalid=13851, Unknown=0, NotChecked=0, Total=17292 [2022-02-10 23:00:28,433 INFO L934 BasicCegarLoop]: 256 mSDtfsCounter, 800 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:28,433 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 4282 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10014 states. [2022-02-10 23:00:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10014 to 4685. [2022-02-10 23:00:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 2.8881298035866783) internal successors, (13528), 4684 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 13528 transitions. [2022-02-10 23:00:28,531 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 13528 transitions. Word has length 77 [2022-02-10 23:00:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:28,531 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 13528 transitions. [2022-02-10 23:00:28,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 13528 transitions. [2022-02-10 23:00:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:28,537 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:28,537 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:28,554 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 23:00:28,753 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,SelfDestructingSolverStorable38 [2022-02-10 23:00:28,754 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2030934561, now seen corresponding path program 36 times [2022-02-10 23:00:28,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:28,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736384139] [2022-02-10 23:00:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:28,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:28,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736384139] [2022-02-10 23:00:28,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736384139] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:28,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42794246] [2022-02-10 23:00:28,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:00:28,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:28,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:28,865 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 23:00:28,867 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 23:00:28,929 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:00:28,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:28,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:00:28,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:29,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:29,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42794246] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:29,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:29,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-10 23:00:29,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624222891] [2022-02-10 23:00:29,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:29,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:29,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:29,369 INFO L87 Difference]: Start difference. First operand 4685 states and 13528 transitions. Second operand has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:32,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:32,114 INFO L93 Difference]: Finished difference Result 12402 states and 34548 transitions. [2022-02-10 23:00:32,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-10 23:00:32,114 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:32,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:32,135 INFO L225 Difference]: With dead ends: 12402 [2022-02-10 23:00:32,136 INFO L226 Difference]: Without dead ends: 12372 [2022-02-10 23:00:32,137 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8437 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3998, Invalid=19872, Unknown=0, NotChecked=0, Total=23870 [2022-02-10 23:00:32,137 INFO L934 BasicCegarLoop]: 254 mSDtfsCounter, 1286 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:32,137 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 3975 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2022-02-10 23:00:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 5593. [2022-02-10 23:00:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5593 states, 5592 states have (on average 2.9393776824034337) internal successors, (16437), 5592 states have internal predecessors, (16437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 16437 transitions. [2022-02-10 23:00:32,265 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 16437 transitions. Word has length 77 [2022-02-10 23:00:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:32,265 INFO L470 AbstractCegarLoop]: Abstraction has 5593 states and 16437 transitions. [2022-02-10 23:00:32,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 16437 transitions. [2022-02-10 23:00:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:32,273 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:32,274 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:32,290 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 23:00:32,490 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,SelfDestructingSolverStorable39 [2022-02-10 23:00:32,490 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash 725148921, now seen corresponding path program 37 times [2022-02-10 23:00:32,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:32,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228326194] [2022-02-10 23:00:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:32,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:32,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:32,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228326194] [2022-02-10 23:00:32,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228326194] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:32,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411175610] [2022-02-10 23:00:32,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:00:32,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:32,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:32,609 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 23:00:32,610 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 23:00:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:32,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:00:32,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:32,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:33,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411175610] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:33,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:33,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-10 23:00:33,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592846082] [2022-02-10 23:00:33,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:33,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:33,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:33,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:33,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:33,389 INFO L87 Difference]: Start difference. First operand 5593 states and 16437 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:35,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:35,993 INFO L93 Difference]: Finished difference Result 9913 states and 27965 transitions. [2022-02-10 23:00:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-10 23:00:35,994 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:35,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:36,055 INFO L225 Difference]: With dead ends: 9913 [2022-02-10 23:00:36,056 INFO L226 Difference]: Without dead ends: 9865 [2022-02-10 23:00:36,056 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2189, Invalid=10021, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 23:00:36,057 INFO L934 BasicCegarLoop]: 262 mSDtfsCounter, 1091 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:36,057 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 3323 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:00:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2022-02-10 23:00:36,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5585. [2022-02-10 23:00:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5584 states have (on average 2.9367836676217767) internal successors, (16399), 5584 states have internal predecessors, (16399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 16399 transitions. [2022-02-10 23:00:36,161 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 16399 transitions. Word has length 77 [2022-02-10 23:00:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:36,162 INFO L470 AbstractCegarLoop]: Abstraction has 5585 states and 16399 transitions. [2022-02-10 23:00:36,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 16399 transitions. [2022-02-10 23:00:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:36,169 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:36,169 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:36,191 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 23:00:36,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:36,385 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1428795491, now seen corresponding path program 38 times [2022-02-10 23:00:36,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:36,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102002984] [2022-02-10 23:00:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:36,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:36,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102002984] [2022-02-10 23:00:36,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102002984] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:36,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872639187] [2022-02-10 23:00:36,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:00:36,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:36,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:36,552 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 23:00:36,553 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 23:00:36,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:00:36,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:36,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:36,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:36,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:37,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872639187] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:37,303 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:37,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-02-10 23:00:37,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983028565] [2022-02-10 23:00:37,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:37,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 23:00:37,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:37,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 23:00:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:00:37,304 INFO L87 Difference]: Start difference. First operand 5585 states and 16399 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:38,949 INFO L93 Difference]: Finished difference Result 9863 states and 28180 transitions. [2022-02-10 23:00:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 23:00:38,950 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:38,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:38,965 INFO L225 Difference]: With dead ends: 9863 [2022-02-10 23:00:38,966 INFO L226 Difference]: Without dead ends: 9713 [2022-02-10 23:00:38,967 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1807, Invalid=8293, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 23:00:38,967 INFO L934 BasicCegarLoop]: 209 mSDtfsCounter, 650 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:38,967 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 3438 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:00:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2022-02-10 23:00:39,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 5681. [2022-02-10 23:00:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5680 states have (on average 2.9350352112676057) internal successors, (16671), 5680 states have internal predecessors, (16671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 16671 transitions. [2022-02-10 23:00:39,065 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 16671 transitions. Word has length 77 [2022-02-10 23:00:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:39,065 INFO L470 AbstractCegarLoop]: Abstraction has 5681 states and 16671 transitions. [2022-02-10 23:00:39,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 16671 transitions. [2022-02-10 23:00:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:39,072 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:39,072 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:39,088 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 23:00:39,288 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,SelfDestructingSolverStorable41 [2022-02-10 23:00:39,288 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:39,289 INFO L85 PathProgramCache]: Analyzing trace with hash -793066977, now seen corresponding path program 39 times [2022-02-10 23:00:39,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:39,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811158787] [2022-02-10 23:00:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:39,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:39,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811158787] [2022-02-10 23:00:39,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811158787] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:39,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953757548] [2022-02-10 23:00:39,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:00:39,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:39,419 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 23:00:39,420 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 23:00:39,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:00:39,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:39,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:39,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:39,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:39,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953757548] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:39,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:39,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 34 [2022-02-10 23:00:39,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979426762] [2022-02-10 23:00:39,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:39,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 23:00:39,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 23:00:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:00:39,939 INFO L87 Difference]: Start difference. First operand 5681 states and 16671 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 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 23:00:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:42,525 INFO L93 Difference]: Finished difference Result 13788 states and 39217 transitions. [2022-02-10 23:00:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-02-10 23:00:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 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 77 [2022-02-10 23:00:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:42,550 INFO L225 Difference]: With dead ends: 13788 [2022-02-10 23:00:42,550 INFO L226 Difference]: Without dead ends: 13758 [2022-02-10 23:00:42,551 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10436 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4693, Invalid=23363, Unknown=0, NotChecked=0, Total=28056 [2022-02-10 23:00:42,556 INFO L934 BasicCegarLoop]: 249 mSDtfsCounter, 1620 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:42,556 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 3432 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13758 states. [2022-02-10 23:00:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13758 to 7369. [2022-02-10 23:00:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7369 states, 7368 states have (on average 2.9729913137893593) internal successors, (21905), 7368 states have internal predecessors, (21905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 21905 transitions. [2022-02-10 23:00:42,743 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 21905 transitions. Word has length 77 [2022-02-10 23:00:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:42,744 INFO L470 AbstractCegarLoop]: Abstraction has 7369 states and 21905 transitions. [2022-02-10 23:00:42,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 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 23:00:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 21905 transitions. [2022-02-10 23:00:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:42,770 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:42,770 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:42,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-10 23:00:42,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:42,971 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:42,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:42,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1963016505, now seen corresponding path program 40 times [2022-02-10 23:00:42,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:42,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748987119] [2022-02-10 23:00:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:42,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:43,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:43,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748987119] [2022-02-10 23:00:43,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748987119] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:43,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116022996] [2022-02-10 23:00:43,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:00:43,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:43,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:43,045 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 23:00:43,046 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 23:00:43,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:00:43,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:43,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:00:43,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:43,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:43,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116022996] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:43,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:43,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-10 23:00:43,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200211102] [2022-02-10 23:00:43,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:43,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:00:43,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:00:43,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:00:43,568 INFO L87 Difference]: Start difference. First operand 7369 states and 21905 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:45,054 INFO L93 Difference]: Finished difference Result 12790 states and 37282 transitions. [2022-02-10 23:00:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 23:00:45,054 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:45,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:45,079 INFO L225 Difference]: With dead ends: 12790 [2022-02-10 23:00:45,079 INFO L226 Difference]: Without dead ends: 12742 [2022-02-10 23:00:45,080 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2896 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1728, Invalid=8172, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 23:00:45,080 INFO L934 BasicCegarLoop]: 254 mSDtfsCounter, 1152 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:45,081 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3701 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:00:45,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12742 states. [2022-02-10 23:00:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12742 to 7909. [2022-02-10 23:00:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 7908 states have (on average 2.979514415781487) internal successors, (23562), 7908 states have internal predecessors, (23562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 23562 transitions. [2022-02-10 23:00:45,246 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 23562 transitions. Word has length 77 [2022-02-10 23:00:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:45,247 INFO L470 AbstractCegarLoop]: Abstraction has 7909 states and 23562 transitions. [2022-02-10 23:00:45,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 23562 transitions. [2022-02-10 23:00:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:45,258 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:45,258 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:45,277 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 23:00:45,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:45,475 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2104307295, now seen corresponding path program 41 times [2022-02-10 23:00:45,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:45,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785283688] [2022-02-10 23:00:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:45,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:45,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:45,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785283688] [2022-02-10 23:00:45,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785283688] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:45,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876325472] [2022-02-10 23:00:45,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:00:45,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:45,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:45,594 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 23:00:45,635 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 23:00:45,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:00:45,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:45,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:00:45,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:45,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:46,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876325472] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:46,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:46,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-10 23:00:46,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417648025] [2022-02-10 23:00:46,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:46,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:00:46,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:00:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:00:46,184 INFO L87 Difference]: Start difference. First operand 7909 states and 23562 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:47,570 INFO L93 Difference]: Finished difference Result 13751 states and 39970 transitions. [2022-02-10 23:00:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 23:00:47,570 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:47,596 INFO L225 Difference]: With dead ends: 13751 [2022-02-10 23:00:47,596 INFO L226 Difference]: Without dead ends: 13721 [2022-02-10 23:00:47,598 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1831, Invalid=9725, Unknown=0, NotChecked=0, Total=11556 [2022-02-10 23:00:47,606 INFO L934 BasicCegarLoop]: 227 mSDtfsCounter, 908 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:47,606 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 2818 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:00:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2022-02-10 23:00:47,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 8425. [2022-02-10 23:00:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8425 states, 8424 states have (on average 2.9768518518518516) internal successors, (25077), 8424 states have internal predecessors, (25077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 25077 transitions. [2022-02-10 23:00:47,833 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 25077 transitions. Word has length 77 [2022-02-10 23:00:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:47,833 INFO L470 AbstractCegarLoop]: Abstraction has 8425 states and 25077 transitions. [2022-02-10 23:00:47,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 25077 transitions. [2022-02-10 23:00:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:47,845 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:47,845 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:47,864 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 23:00:48,062 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,SelfDestructingSolverStorable44 [2022-02-10 23:00:48,062 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:48,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash 565423481, now seen corresponding path program 42 times [2022-02-10 23:00:48,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:48,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458761401] [2022-02-10 23:00:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:48,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:48,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:48,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458761401] [2022-02-10 23:00:48,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458761401] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:48,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979168884] [2022-02-10 23:00:48,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:00:48,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:48,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:48,173 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 23:00:48,174 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 23:00:48,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 23:00:48,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:48,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:00:48,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:48,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:48,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979168884] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:48,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:48,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-10 23:00:48,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881686004] [2022-02-10 23:00:48,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:48,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:00:48,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:00:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:00:48,931 INFO L87 Difference]: Start difference. First operand 8425 states and 25077 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:50,265 INFO L93 Difference]: Finished difference Result 13035 states and 37943 transitions. [2022-02-10 23:00:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 23:00:50,265 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:50,289 INFO L225 Difference]: With dead ends: 13035 [2022-02-10 23:00:50,289 INFO L226 Difference]: Without dead ends: 12987 [2022-02-10 23:00:50,290 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1076, Invalid=5244, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 23:00:50,291 INFO L934 BasicCegarLoop]: 200 mSDtfsCounter, 824 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:50,291 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 2424 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:00:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2022-02-10 23:00:50,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 8073. [2022-02-10 23:00:50,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8073 states, 8072 states have (on average 2.977824578790882) internal successors, (24037), 8072 states have internal predecessors, (24037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 24037 transitions. [2022-02-10 23:00:50,505 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 24037 transitions. Word has length 77 [2022-02-10 23:00:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:50,505 INFO L470 AbstractCegarLoop]: Abstraction has 8073 states and 24037 transitions. [2022-02-10 23:00:50,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 24037 transitions. [2022-02-10 23:00:50,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:50,516 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:50,517 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:50,535 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 23:00:50,733 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,SelfDestructingSolverStorable45 [2022-02-10 23:00:50,734 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -940442981, now seen corresponding path program 43 times [2022-02-10 23:00:50,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:50,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252230182] [2022-02-10 23:00:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:50,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:50,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252230182] [2022-02-10 23:00:50,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252230182] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:50,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463356950] [2022-02-10 23:00:50,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:00:50,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:50,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:50,843 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 23:00:50,846 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 23:00:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:50,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:00:50,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:51,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:51,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463356950] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:51,336 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:51,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-10 23:00:51,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101677366] [2022-02-10 23:00:51,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:51,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:00:51,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:51,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:00:51,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:00:51,337 INFO L87 Difference]: Start difference. First operand 8073 states and 24037 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:51,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:51,910 INFO L93 Difference]: Finished difference Result 9873 states and 29356 transitions. [2022-02-10 23:00:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 23:00:51,910 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:51,928 INFO L225 Difference]: With dead ends: 9873 [2022-02-10 23:00:51,929 INFO L226 Difference]: Without dead ends: 9837 [2022-02-10 23:00:51,929 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=477, Invalid=2279, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 23:00:51,929 INFO L934 BasicCegarLoop]: 180 mSDtfsCounter, 642 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:51,929 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1874 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:00:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2022-02-10 23:00:52,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 8077. [2022-02-10 23:00:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8077 states, 8076 states have (on average 2.9777117384843983) internal successors, (24048), 8076 states have internal predecessors, (24048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8077 states to 8077 states and 24048 transitions. [2022-02-10 23:00:52,072 INFO L78 Accepts]: Start accepts. Automaton has 8077 states and 24048 transitions. Word has length 77 [2022-02-10 23:00:52,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:52,073 INFO L470 AbstractCegarLoop]: Abstraction has 8077 states and 24048 transitions. [2022-02-10 23:00:52,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 8077 states and 24048 transitions. [2022-02-10 23:00:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:52,084 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:52,084 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:52,102 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 23:00:52,299 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,SelfDestructingSolverStorable46 [2022-02-10 23:00:52,299 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1822451929, now seen corresponding path program 44 times [2022-02-10 23:00:52,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:52,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486750172] [2022-02-10 23:00:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:52,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:52,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:52,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486750172] [2022-02-10 23:00:52,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486750172] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:52,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440835735] [2022-02-10 23:00:52,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:00:52,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:52,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:52,433 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 23:00:52,435 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 23:00:52,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:00:52,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:52,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:52,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:52,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:53,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440835735] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:53,129 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:53,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 35 [2022-02-10 23:00:53,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465266186] [2022-02-10 23:00:53,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:53,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 23:00:53,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 23:00:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:00:53,130 INFO L87 Difference]: Start difference. First operand 8077 states and 24048 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:55,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:55,418 INFO L93 Difference]: Finished difference Result 14182 states and 41355 transitions. [2022-02-10 23:00:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-10 23:00:55,418 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:55,446 INFO L225 Difference]: With dead ends: 14182 [2022-02-10 23:00:55,447 INFO L226 Difference]: Without dead ends: 14107 [2022-02-10 23:00:55,449 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6721 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3704, Invalid=15756, Unknown=0, NotChecked=0, Total=19460 [2022-02-10 23:00:55,449 INFO L934 BasicCegarLoop]: 238 mSDtfsCounter, 740 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:55,449 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 3417 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:00:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2022-02-10 23:00:55,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 8733. [2022-02-10 23:00:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8733 states, 8732 states have (on average 2.977553825011452) internal successors, (26000), 8732 states have internal predecessors, (26000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 26000 transitions. [2022-02-10 23:00:55,666 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 26000 transitions. Word has length 77 [2022-02-10 23:00:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:55,666 INFO L470 AbstractCegarLoop]: Abstraction has 8733 states and 26000 transitions. [2022-02-10 23:00:55,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 26000 transitions. [2022-02-10 23:00:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:55,677 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:55,677 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:00:55,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:55,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:55,888 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:00:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:55,888 INFO L85 PathProgramCache]: Analyzing trace with hash -520158177, now seen corresponding path program 45 times [2022-02-10 23:00:55,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:55,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678570214] [2022-02-10 23:00:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:55,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:55,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678570214] [2022-02-10 23:00:55,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678570214] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:55,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094150227] [2022-02-10 23:00:55,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:00:55,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:55,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:55,986 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 23:00:55,987 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 23:00:56,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:00:56,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:56,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:00:56,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:56,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:56,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094150227] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:56,597 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:56,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-02-10 23:00:56,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957098933] [2022-02-10 23:00:56,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:56,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 23:00:56,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:56,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 23:00:56,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:00:56,598 INFO L87 Difference]: Start difference. First operand 8733 states and 26000 transitions. Second operand has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:59,886 INFO L93 Difference]: Finished difference Result 18496 states and 53581 transitions. [2022-02-10 23:00:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-02-10 23:00:59,886 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:59,923 INFO L225 Difference]: With dead ends: 18496 [2022-02-10 23:00:59,923 INFO L226 Difference]: Without dead ends: 18466 [2022-02-10 23:00:59,925 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12734 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5678, Invalid=27994, Unknown=0, NotChecked=0, Total=33672 [2022-02-10 23:00:59,925 INFO L934 BasicCegarLoop]: 259 mSDtfsCounter, 1517 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:59,926 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 4363 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 23:00:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18466 states. [2022-02-10 23:01:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 11413. [2022-02-10 23:01:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 11412 states have (on average 2.997721696459867) internal successors, (34210), 11412 states have internal predecessors, (34210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 34210 transitions. [2022-02-10 23:01:00,167 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 34210 transitions. Word has length 77 [2022-02-10 23:01:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:00,167 INFO L470 AbstractCegarLoop]: Abstraction has 11413 states and 34210 transitions. [2022-02-10 23:01:00,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 34210 transitions. [2022-02-10 23:01:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:00,185 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:00,185 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:00,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:00,401 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,SelfDestructingSolverStorable48 [2022-02-10 23:01:00,401 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:00,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2059041991, now seen corresponding path program 46 times [2022-02-10 23:01:00,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:00,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870578413] [2022-02-10 23:01:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:00,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:00,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:00,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870578413] [2022-02-10 23:01:00,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870578413] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:00,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006295085] [2022-02-10 23:01:00,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:01:00,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:00,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:00,502 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 23:01:00,532 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 23:01:00,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:01:00,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:00,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:00,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:00,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:01,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006295085] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:01,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:01,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-10 23:01:01,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523555912] [2022-02-10 23:01:01,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:01,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:01:01,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:01,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:01:01,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:01:01,163 INFO L87 Difference]: Start difference. First operand 11413 states and 34210 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:02,852 INFO L93 Difference]: Finished difference Result 17859 states and 52232 transitions. [2022-02-10 23:01:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-10 23:01:02,853 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:02,888 INFO L225 Difference]: With dead ends: 17859 [2022-02-10 23:01:02,888 INFO L226 Difference]: Without dead ends: 17787 [2022-02-10 23:01:02,890 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3883 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2109, Invalid=10323, Unknown=0, NotChecked=0, Total=12432 [2022-02-10 23:01:02,890 INFO L934 BasicCegarLoop]: 247 mSDtfsCounter, 1175 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:02,890 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 2979 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:01:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2022-02-10 23:01:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 11969. [2022-02-10 23:01:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11969 states, 11968 states have (on average 3.005932486631016) internal successors, (35975), 11968 states have internal predecessors, (35975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11969 states to 11969 states and 35975 transitions. [2022-02-10 23:01:03,165 INFO L78 Accepts]: Start accepts. Automaton has 11969 states and 35975 transitions. Word has length 77 [2022-02-10 23:01:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:03,165 INFO L470 AbstractCegarLoop]: Abstraction has 11969 states and 35975 transitions. [2022-02-10 23:01:03,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 11969 states and 35975 transitions. [2022-02-10 23:01:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:03,182 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:03,182 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:03,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:03,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-10 23:01:03,395 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:03,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:03,396 INFO L85 PathProgramCache]: Analyzing trace with hash 730058843, now seen corresponding path program 47 times [2022-02-10 23:01:03,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:03,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077145723] [2022-02-10 23:01:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:03,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:03,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:03,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077145723] [2022-02-10 23:01:03,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077145723] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:03,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625737449] [2022-02-10 23:01:03,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:01:03,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:03,514 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 23:01:03,515 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 23:01:03,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 23:01:03,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:03,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:01:03,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:03,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:04,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625737449] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:04,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:04,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-10 23:01:04,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406660777] [2022-02-10 23:01:04,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:04,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 23:01:04,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:04,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 23:01:04,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2022-02-10 23:01:04,036 INFO L87 Difference]: Start difference. First operand 11969 states and 35975 transitions. Second operand has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 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 23:01:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:05,602 INFO L93 Difference]: Finished difference Result 22953 states and 67933 transitions. [2022-02-10 23:01:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 23:01:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 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 77 [2022-02-10 23:01:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:05,652 INFO L225 Difference]: With dead ends: 22953 [2022-02-10 23:01:05,652 INFO L226 Difference]: Without dead ends: 22881 [2022-02-10 23:01:05,653 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1519, Invalid=8581, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 23:01:05,654 INFO L934 BasicCegarLoop]: 212 mSDtfsCounter, 650 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:05,654 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 2387 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:01:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22881 states. [2022-02-10 23:01:05,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22881 to 12161. [2022-02-10 23:01:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12161 states, 12160 states have (on average 3.0045230263157894) internal successors, (36535), 12160 states have internal predecessors, (36535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12161 states to 12161 states and 36535 transitions. [2022-02-10 23:01:06,014 INFO L78 Accepts]: Start accepts. Automaton has 12161 states and 36535 transitions. Word has length 77 [2022-02-10 23:01:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:06,015 INFO L470 AbstractCegarLoop]: Abstraction has 12161 states and 36535 transitions. [2022-02-10 23:01:06,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 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 23:01:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 12161 states and 36535 transitions. [2022-02-10 23:01:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:06,031 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:06,031 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:06,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-02-10 23:01:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:06,239 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1998644761, now seen corresponding path program 48 times [2022-02-10 23:01:06,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:06,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887301951] [2022-02-10 23:01:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:06,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:06,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:06,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887301951] [2022-02-10 23:01:06,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887301951] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:06,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619231430] [2022-02-10 23:01:06,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:01:06,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:06,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:06,368 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 23:01:06,368 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 23:01:06,447 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:01:06,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:06,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 23:01:06,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:06,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:06,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619231430] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:06,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:06,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 32 [2022-02-10 23:01:06,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320840091] [2022-02-10 23:01:06,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:06,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:06,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:06,939 INFO L87 Difference]: Start difference. First operand 12161 states and 36535 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:11,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:11,317 INFO L93 Difference]: Finished difference Result 29756 states and 87065 transitions. [2022-02-10 23:01:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-02-10 23:01:11,317 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:11,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:11,382 INFO L225 Difference]: With dead ends: 29756 [2022-02-10 23:01:11,382 INFO L226 Difference]: Without dead ends: 29411 [2022-02-10 23:01:11,387 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23300 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=8315, Invalid=49045, Unknown=0, NotChecked=0, Total=57360 [2022-02-10 23:01:11,389 INFO L934 BasicCegarLoop]: 242 mSDtfsCounter, 1590 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:11,389 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 3472 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 23:01:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29411 states. [2022-02-10 23:01:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29411 to 15768. [2022-02-10 23:01:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15768 states, 15767 states have (on average 2.986427348259022) internal successors, (47087), 15767 states have internal predecessors, (47087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15768 states to 15768 states and 47087 transitions. [2022-02-10 23:01:11,786 INFO L78 Accepts]: Start accepts. Automaton has 15768 states and 47087 transitions. Word has length 77 [2022-02-10 23:01:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:11,787 INFO L470 AbstractCegarLoop]: Abstraction has 15768 states and 47087 transitions. [2022-02-10 23:01:11,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 15768 states and 47087 transitions. [2022-02-10 23:01:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:11,811 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:11,811 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:11,829 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 23:01:12,024 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,SelfDestructingSolverStorable51 [2022-02-10 23:01:12,025 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash -72915937, now seen corresponding path program 49 times [2022-02-10 23:01:12,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:12,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100449521] [2022-02-10 23:01:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:12,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:12,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:12,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100449521] [2022-02-10 23:01:12,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100449521] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:12,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749146505] [2022-02-10 23:01:12,134 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:01:12,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:12,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:12,137 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 23:01:12,138 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 23:01:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:12,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:12,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:12,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:12,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749146505] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:12,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:12,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-10 23:01:12,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884675607] [2022-02-10 23:01:12,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:12,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:01:12,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:12,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:01:12,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:01:12,842 INFO L87 Difference]: Start difference. First operand 15768 states and 47087 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:14,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:14,343 INFO L93 Difference]: Finished difference Result 21164 states and 62515 transitions. [2022-02-10 23:01:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 23:01:14,344 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:14,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:14,450 INFO L225 Difference]: With dead ends: 21164 [2022-02-10 23:01:14,450 INFO L226 Difference]: Without dead ends: 21128 [2022-02-10 23:01:14,450 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3027 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1680, Invalid=8220, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 23:01:14,450 INFO L934 BasicCegarLoop]: 249 mSDtfsCounter, 817 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:14,451 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3435 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:01:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21128 states. [2022-02-10 23:01:14,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21128 to 16764. [2022-02-10 23:01:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16763 states have (on average 2.9952872397542207) internal successors, (50210), 16763 states have internal predecessors, (50210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 50210 transitions. [2022-02-10 23:01:14,719 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 50210 transitions. Word has length 77 [2022-02-10 23:01:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:14,719 INFO L470 AbstractCegarLoop]: Abstraction has 16764 states and 50210 transitions. [2022-02-10 23:01:14,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 50210 transitions. [2022-02-10 23:01:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:14,743 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:14,743 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:14,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-10 23:01:14,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:14,959 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:14,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1176482649, now seen corresponding path program 50 times [2022-02-10 23:01:14,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:14,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102939263] [2022-02-10 23:01:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:14,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:15,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:15,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102939263] [2022-02-10 23:01:15,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102939263] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:15,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562280134] [2022-02-10 23:01:15,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:01:15,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:15,069 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 23:01:15,070 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 23:01:15,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:01:15,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:15,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:15,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:15,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:15,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562280134] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:15,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:15,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-10 23:01:15,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193205585] [2022-02-10 23:01:15,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:15,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:01:15,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:01:15,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:01:15,589 INFO L87 Difference]: Start difference. First operand 16764 states and 50210 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:18,458 INFO L93 Difference]: Finished difference Result 32421 states and 95423 transitions. [2022-02-10 23:01:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-02-10 23:01:18,459 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:18,526 INFO L225 Difference]: With dead ends: 32421 [2022-02-10 23:01:18,527 INFO L226 Difference]: Without dead ends: 32376 [2022-02-10 23:01:18,529 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12105 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5348, Invalid=25804, Unknown=0, NotChecked=0, Total=31152 [2022-02-10 23:01:18,530 INFO L934 BasicCegarLoop]: 248 mSDtfsCounter, 1180 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:18,530 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 4054 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:01:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32376 states. [2022-02-10 23:01:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32376 to 19893. [2022-02-10 23:01:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19893 states, 19892 states have (on average 3.001105972250151) internal successors, (59698), 19892 states have internal predecessors, (59698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19893 states to 19893 states and 59698 transitions. [2022-02-10 23:01:19,095 INFO L78 Accepts]: Start accepts. Automaton has 19893 states and 59698 transitions. Word has length 77 [2022-02-10 23:01:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:19,095 INFO L470 AbstractCegarLoop]: Abstraction has 19893 states and 59698 transitions. [2022-02-10 23:01:19,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 19893 states and 59698 transitions. [2022-02-10 23:01:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:19,126 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:19,126 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:19,144 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 23:01:19,335 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,SelfDestructingSolverStorable53 [2022-02-10 23:01:19,335 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1579600833, now seen corresponding path program 51 times [2022-02-10 23:01:19,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:19,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645605200] [2022-02-10 23:01:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:19,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:19,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645605200] [2022-02-10 23:01:19,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645605200] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:19,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818081707] [2022-02-10 23:01:19,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:01:19,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:19,440 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 23:01:19,441 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 23:01:19,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:01:19,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:19,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:01:19,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:19,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:20,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818081707] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:20,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:20,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-02-10 23:01:20,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958296867] [2022-02-10 23:01:20,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:20,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 23:01:20,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 23:01:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:01:20,075 INFO L87 Difference]: Start difference. First operand 19893 states and 59698 transitions. Second operand has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:25,695 INFO L93 Difference]: Finished difference Result 36557 states and 108426 transitions. [2022-02-10 23:01:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-02-10 23:01:25,695 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:25,769 INFO L225 Difference]: With dead ends: 36557 [2022-02-10 23:01:25,769 INFO L226 Difference]: Without dead ends: 36509 [2022-02-10 23:01:25,773 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24666 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9606, Invalid=51156, Unknown=0, NotChecked=0, Total=60762 [2022-02-10 23:01:25,774 INFO L934 BasicCegarLoop]: 252 mSDtfsCounter, 2582 mSDsluCounter, 3952 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:25,774 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 4052 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-10 23:01:25,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36509 states. [2022-02-10 23:01:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36509 to 20333. [2022-02-10 23:01:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20333 states, 20332 states have (on average 2.9956718473342514) internal successors, (60908), 20332 states have internal predecessors, (60908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20333 states to 20333 states and 60908 transitions. [2022-02-10 23:01:26,348 INFO L78 Accepts]: Start accepts. Automaton has 20333 states and 60908 transitions. Word has length 77 [2022-02-10 23:01:26,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:26,348 INFO L470 AbstractCegarLoop]: Abstraction has 20333 states and 60908 transitions. [2022-02-10 23:01:26,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 20333 states and 60908 transitions. [2022-02-10 23:01:26,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:26,376 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:26,376 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:26,395 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 23:01:26,589 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,SelfDestructingSolverStorable54 [2022-02-10 23:01:26,590 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:26,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:26,590 INFO L85 PathProgramCache]: Analyzing trace with hash 73734371, now seen corresponding path program 52 times [2022-02-10 23:01:26,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:26,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024766934] [2022-02-10 23:01:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:26,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:26,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:26,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024766934] [2022-02-10 23:01:26,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024766934] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:26,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854045576] [2022-02-10 23:01:26,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:01:26,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:26,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:26,686 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 23:01:26,692 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 23:01:26,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:01:26,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:26,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:26,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:26,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:27,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854045576] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:27,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:27,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-02-10 23:01:27,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732704483] [2022-02-10 23:01:27,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:27,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:01:27,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:01:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:01:27,236 INFO L87 Difference]: Start difference. First operand 20333 states and 60908 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:29,059 INFO L93 Difference]: Finished difference Result 33381 states and 99082 transitions. [2022-02-10 23:01:29,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-10 23:01:29,059 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:29,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:29,124 INFO L225 Difference]: With dead ends: 33381 [2022-02-10 23:01:29,124 INFO L226 Difference]: Without dead ends: 33345 [2022-02-10 23:01:29,125 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4532 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2306, Invalid=11266, Unknown=0, NotChecked=0, Total=13572 [2022-02-10 23:01:29,126 INFO L934 BasicCegarLoop]: 213 mSDtfsCounter, 1230 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:29,126 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 3216 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:01:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33345 states. [2022-02-10 23:01:29,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33345 to 20209. [2022-02-10 23:01:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20209 states, 20208 states have (on average 2.9928246239113223) internal successors, (60479), 20208 states have internal predecessors, (60479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20209 states to 20209 states and 60479 transitions. [2022-02-10 23:01:29,700 INFO L78 Accepts]: Start accepts. Automaton has 20209 states and 60479 transitions. Word has length 77 [2022-02-10 23:01:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:29,701 INFO L470 AbstractCegarLoop]: Abstraction has 20209 states and 60479 transitions. [2022-02-10 23:01:29,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 20209 states and 60479 transitions. [2022-02-10 23:01:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:29,733 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:29,733 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:29,765 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 23:01:29,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:29,950 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:29,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1917390069, now seen corresponding path program 53 times [2022-02-10 23:01:29,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:29,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164993734] [2022-02-10 23:01:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:29,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:30,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:30,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164993734] [2022-02-10 23:01:30,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164993734] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:30,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544264090] [2022-02-10 23:01:30,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:01:30,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:30,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:30,035 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 23:01:30,036 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 23:01:30,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 23:01:30,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:30,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:01:30,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:30,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:30,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544264090] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:30,482 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:30,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2022-02-10 23:01:30,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255830792] [2022-02-10 23:01:30,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:30,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 23:01:30,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:30,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 23:01:30,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-02-10 23:01:30,483 INFO L87 Difference]: Start difference. First operand 20209 states and 60479 transitions. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 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 23:01:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:32,781 INFO L93 Difference]: Finished difference Result 38522 states and 113262 transitions. [2022-02-10 23:01:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-10 23:01:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 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 77 [2022-02-10 23:01:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:32,864 INFO L225 Difference]: With dead ends: 38522 [2022-02-10 23:01:32,864 INFO L226 Difference]: Without dead ends: 38474 [2022-02-10 23:01:32,866 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5568 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2672, Invalid=13840, Unknown=0, NotChecked=0, Total=16512 [2022-02-10 23:01:32,867 INFO L934 BasicCegarLoop]: 289 mSDtfsCounter, 1067 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:32,867 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1067 Valid, 3553 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:01:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38474 states. [2022-02-10 23:01:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38474 to 20593. [2022-02-10 23:01:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20593 states, 20592 states have (on average 2.996649184149184) internal successors, (61707), 20592 states have internal predecessors, (61707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20593 states to 20593 states and 61707 transitions. [2022-02-10 23:01:33,505 INFO L78 Accepts]: Start accepts. Automaton has 20593 states and 61707 transitions. Word has length 77 [2022-02-10 23:01:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:33,505 INFO L470 AbstractCegarLoop]: Abstraction has 20593 states and 61707 transitions. [2022-02-10 23:01:33,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 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 23:01:33,508 INFO L276 IsEmpty]: Start isEmpty. Operand 20593 states and 61707 transitions. [2022-02-10 23:01:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:33,538 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:33,538 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:33,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:33,752 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1473791071, now seen corresponding path program 54 times [2022-02-10 23:01:33,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:33,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44163926] [2022-02-10 23:01:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:33,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:33,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:33,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44163926] [2022-02-10 23:01:33,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44163926] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:33,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874472101] [2022-02-10 23:01:33,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:01:33,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:33,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:33,890 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 23:01:33,892 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 23:01:33,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:01:33,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:33,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:33,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:34,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:34,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874472101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:34,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:34,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-10 23:01:34,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378975828] [2022-02-10 23:01:34,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:34,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:34,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:34,306 INFO L87 Difference]: Start difference. First operand 20593 states and 61707 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:37,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:37,088 INFO L93 Difference]: Finished difference Result 37942 states and 113081 transitions. [2022-02-10 23:01:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-10 23:01:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:37,176 INFO L225 Difference]: With dead ends: 37942 [2022-02-10 23:01:37,176 INFO L226 Difference]: Without dead ends: 37912 [2022-02-10 23:01:37,178 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7712 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3953, Invalid=18099, Unknown=0, NotChecked=0, Total=22052 [2022-02-10 23:01:37,179 INFO L934 BasicCegarLoop]: 211 mSDtfsCounter, 989 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:37,179 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 3199 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:01:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37912 states. [2022-02-10 23:01:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37912 to 27933. [2022-02-10 23:01:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27933 states, 27932 states have (on average 3.0211943290849206) internal successors, (84388), 27932 states have internal predecessors, (84388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27933 states to 27933 states and 84388 transitions. [2022-02-10 23:01:37,857 INFO L78 Accepts]: Start accepts. Automaton has 27933 states and 84388 transitions. Word has length 77 [2022-02-10 23:01:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:37,857 INFO L470 AbstractCegarLoop]: Abstraction has 27933 states and 84388 transitions. [2022-02-10 23:01:37,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 27933 states and 84388 transitions. [2022-02-10 23:01:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:37,902 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:37,908 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:37,925 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 23:01:38,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:38,125 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash -65092743, now seen corresponding path program 55 times [2022-02-10 23:01:38,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:38,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028430785] [2022-02-10 23:01:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:38,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:38,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:38,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028430785] [2022-02-10 23:01:38,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028430785] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:38,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823632439] [2022-02-10 23:01:38,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:01:38,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:38,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:38,277 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 23:01:38,311 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 23:01:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:38,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:38,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:38,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:38,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823632439] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:38,951 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:38,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-10 23:01:38,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918304627] [2022-02-10 23:01:38,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:38,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:38,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:38,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:38,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:38,953 INFO L87 Difference]: Start difference. First operand 27933 states and 84388 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:40,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:40,677 INFO L93 Difference]: Finished difference Result 35041 states and 104489 transitions. [2022-02-10 23:01:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 23:01:40,677 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:40,758 INFO L225 Difference]: With dead ends: 35041 [2022-02-10 23:01:40,758 INFO L226 Difference]: Without dead ends: 34945 [2022-02-10 23:01:40,759 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1987, Invalid=9143, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 23:01:40,759 INFO L934 BasicCegarLoop]: 222 mSDtfsCounter, 1138 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:40,759 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 2399 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:01:40,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34945 states. [2022-02-10 23:01:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34945 to 24729. [2022-02-10 23:01:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24729 states, 24728 states have (on average 3.0120106761565837) internal successors, (74481), 24728 states have internal predecessors, (74481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24729 states to 24729 states and 74481 transitions. [2022-02-10 23:01:41,513 INFO L78 Accepts]: Start accepts. Automaton has 24729 states and 74481 transitions. Word has length 77 [2022-02-10 23:01:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:41,514 INFO L470 AbstractCegarLoop]: Abstraction has 24729 states and 74481 transitions. [2022-02-10 23:01:41,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 24729 states and 74481 transitions. [2022-02-10 23:01:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:41,550 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:41,550 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:41,569 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 23:01:41,766 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,SelfDestructingSolverStorable58 [2022-02-10 23:01:41,767 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1921033311, now seen corresponding path program 56 times [2022-02-10 23:01:41,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:41,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41594477] [2022-02-10 23:01:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:41,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:41,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41594477] [2022-02-10 23:01:41,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41594477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:41,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216455548] [2022-02-10 23:01:41,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:01:41,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:41,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:41,973 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 23:01:41,974 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 23:01:42,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:01:42,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:42,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:42,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:42,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:42,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216455548] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:42,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:42,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-10 23:01:42,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067344111] [2022-02-10 23:01:42,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:42,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:01:42,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:01:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:01:42,593 INFO L87 Difference]: Start difference. First operand 24729 states and 74481 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:43,937 INFO L93 Difference]: Finished difference Result 29827 states and 89157 transitions. [2022-02-10 23:01:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 23:01:43,938 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:43,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:44,063 INFO L225 Difference]: With dead ends: 29827 [2022-02-10 23:01:44,063 INFO L226 Difference]: Without dead ends: 29755 [2022-02-10 23:01:44,063 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1188, Invalid=5454, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 23:01:44,064 INFO L934 BasicCegarLoop]: 198 mSDtfsCounter, 764 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:44,064 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 2785 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:01:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29755 states. [2022-02-10 23:01:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29755 to 24853. [2022-02-10 23:01:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24853 states, 24852 states have (on average 3.011186222436826) internal successors, (74834), 24852 states have internal predecessors, (74834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24853 states to 24853 states and 74834 transitions. [2022-02-10 23:01:44,601 INFO L78 Accepts]: Start accepts. Automaton has 24853 states and 74834 transitions. Word has length 77 [2022-02-10 23:01:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:44,601 INFO L470 AbstractCegarLoop]: Abstraction has 24853 states and 74834 transitions. [2022-02-10 23:01:44,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 24853 states and 74834 transitions. [2022-02-10 23:01:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:44,642 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:44,643 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:44,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:44,843 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,SelfDestructingSolverStorable59 [2022-02-10 23:01:44,843 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash 817466599, now seen corresponding path program 57 times [2022-02-10 23:01:44,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:44,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827051610] [2022-02-10 23:01:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:44,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:44,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:44,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827051610] [2022-02-10 23:01:44,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827051610] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:44,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529719912] [2022-02-10 23:01:44,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:01:44,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:44,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:44,931 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 23:01:44,932 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 23:01:44,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:01:44,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:44,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:01:44,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:45,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:45,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529719912] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:45,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:45,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-02-10 23:01:45,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838016809] [2022-02-10 23:01:45,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:45,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 23:01:45,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 23:01:45,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 23:01:45,469 INFO L87 Difference]: Start difference. First operand 24853 states and 74834 transitions. Second operand has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:49,109 INFO L93 Difference]: Finished difference Result 43877 states and 130351 transitions. [2022-02-10 23:01:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-02-10 23:01:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:49,204 INFO L225 Difference]: With dead ends: 43877 [2022-02-10 23:01:49,204 INFO L226 Difference]: Without dead ends: 43787 [2022-02-10 23:01:49,206 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17610 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9170, Invalid=35562, Unknown=0, NotChecked=0, Total=44732 [2022-02-10 23:01:49,206 INFO L934 BasicCegarLoop]: 203 mSDtfsCounter, 1903 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:49,206 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 3065 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 23:01:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43787 states. [2022-02-10 23:01:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43787 to 26781. [2022-02-10 23:01:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26781 states, 26780 states have (on average 3.0019417475728156) internal successors, (80392), 26780 states have internal predecessors, (80392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26781 states to 26781 states and 80392 transitions. [2022-02-10 23:01:49,875 INFO L78 Accepts]: Start accepts. Automaton has 26781 states and 80392 transitions. Word has length 77 [2022-02-10 23:01:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:49,876 INFO L470 AbstractCegarLoop]: Abstraction has 26781 states and 80392 transitions. [2022-02-10 23:01:49,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 26781 states and 80392 transitions. [2022-02-10 23:01:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:49,919 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:49,919 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:49,937 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 23:01:50,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:50,135 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:50,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:50,136 INFO L85 PathProgramCache]: Analyzing trace with hash -721417215, now seen corresponding path program 58 times [2022-02-10 23:01:50,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:50,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946151501] [2022-02-10 23:01:50,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:50,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:50,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:50,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946151501] [2022-02-10 23:01:50,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946151501] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:50,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788680432] [2022-02-10 23:01:50,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:01:50,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:50,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:50,234 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 23:01:50,234 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 23:01:50,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:01:50,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:50,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:50,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:50,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:50,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788680432] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:50,816 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:50,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-02-10 23:01:50,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134837318] [2022-02-10 23:01:50,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:50,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:01:50,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:01:50,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:01:50,817 INFO L87 Difference]: Start difference. First operand 26781 states and 80392 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:52,282 INFO L93 Difference]: Finished difference Result 40700 states and 121546 transitions. [2022-02-10 23:01:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-10 23:01:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:52,375 INFO L225 Difference]: With dead ends: 40700 [2022-02-10 23:01:52,376 INFO L226 Difference]: Without dead ends: 40628 [2022-02-10 23:01:52,377 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2453, Invalid=9319, Unknown=0, NotChecked=0, Total=11772 [2022-02-10 23:01:52,377 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 1129 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:52,377 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2221 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:01:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40628 states. [2022-02-10 23:01:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40628 to 26557. [2022-02-10 23:01:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26557 states, 26556 states have (on average 3.0055731284832055) internal successors, (79816), 26556 states have internal predecessors, (79816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 79816 transitions. [2022-02-10 23:01:53,138 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 79816 transitions. Word has length 77 [2022-02-10 23:01:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:53,138 INFO L470 AbstractCegarLoop]: Abstraction has 26557 states and 79816 transitions. [2022-02-10 23:01:53,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 79816 transitions. [2022-02-10 23:01:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:53,180 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:53,180 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:53,196 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 23:01:53,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:53,387 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:53,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:53,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2067683619, now seen corresponding path program 59 times [2022-02-10 23:01:53,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:53,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563657832] [2022-02-10 23:01:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:53,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:53,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563657832] [2022-02-10 23:01:53,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563657832] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:53,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022372754] [2022-02-10 23:01:53,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:01:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:53,482 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 23:01:53,483 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 23:01:53,562 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 23:01:53,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:53,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:01:53,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:53,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:53,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022372754] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:53,998 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:53,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-02-10 23:01:53,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005150707] [2022-02-10 23:01:53,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:53,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 23:01:53,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:53,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 23:01:53,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-02-10 23:01:53,999 INFO L87 Difference]: Start difference. First operand 26557 states and 79816 transitions. Second operand has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:56,520 INFO L93 Difference]: Finished difference Result 49127 states and 146632 transitions. [2022-02-10 23:01:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-10 23:01:56,524 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 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 77 [2022-02-10 23:01:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:56,634 INFO L225 Difference]: With dead ends: 49127 [2022-02-10 23:01:56,634 INFO L226 Difference]: Without dead ends: 49055 [2022-02-10 23:01:56,636 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7621 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3626, Invalid=17544, Unknown=0, NotChecked=0, Total=21170 [2022-02-10 23:01:56,636 INFO L934 BasicCegarLoop]: 169 mSDtfsCounter, 1109 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:56,636 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 2200 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:01:56,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49055 states. [2022-02-10 23:01:57,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49055 to 29053. [2022-02-10 23:01:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29053 states, 29052 states have (on average 3.0139060994079583) internal successors, (87560), 29052 states have internal predecessors, (87560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29053 states to 29053 states and 87560 transitions. [2022-02-10 23:01:57,609 INFO L78 Accepts]: Start accepts. Automaton has 29053 states and 87560 transitions. Word has length 77 [2022-02-10 23:01:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:57,609 INFO L470 AbstractCegarLoop]: Abstraction has 29053 states and 87560 transitions. [2022-02-10 23:01:57,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 29053 states and 87560 transitions. [2022-02-10 23:01:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:57,657 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:57,657 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:01:57,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:57,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:57,864 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:01:57,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:57,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1768261465, now seen corresponding path program 60 times [2022-02-10 23:01:57,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:57,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504930711] [2022-02-10 23:01:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:57,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:57,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:57,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504930711] [2022-02-10 23:01:57,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504930711] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:57,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545231372] [2022-02-10 23:01:57,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:01:57,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:57,998 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 23:01:57,999 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 23:01:58,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:01:58,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:01:58,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:01:58,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:58,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:58,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545231372] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:58,713 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:58,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2022-02-10 23:01:58,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713120416] [2022-02-10 23:01:58,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:58,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 23:01:58,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:58,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 23:01:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 23:01:58,715 INFO L87 Difference]: Start difference. First operand 29053 states and 87560 transitions. Second operand has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:01,100 INFO L93 Difference]: Finished difference Result 47531 states and 141242 transitions. [2022-02-10 23:02:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-10 23:02:01,100 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:01,204 INFO L225 Difference]: With dead ends: 47531 [2022-02-10 23:02:01,204 INFO L226 Difference]: Without dead ends: 47366 [2022-02-10 23:02:01,206 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5531 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2843, Invalid=14187, Unknown=0, NotChecked=0, Total=17030 [2022-02-10 23:02:01,206 INFO L934 BasicCegarLoop]: 185 mSDtfsCounter, 892 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:01,212 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 3699 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:02:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47366 states. [2022-02-10 23:02:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47366 to 32281. [2022-02-10 23:02:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32281 states, 32280 states have (on average 3.000650557620818) internal successors, (96861), 32280 states have internal predecessors, (96861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32281 states to 32281 states and 96861 transitions. [2022-02-10 23:02:02,158 INFO L78 Accepts]: Start accepts. Automaton has 32281 states and 96861 transitions. Word has length 77 [2022-02-10 23:02:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:02,158 INFO L470 AbstractCegarLoop]: Abstraction has 32281 states and 96861 transitions. [2022-02-10 23:02:02,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 32281 states and 96861 transitions. [2022-02-10 23:02:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:02,217 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:02,217 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:02,233 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 23:02:02,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:02,434 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash 157467359, now seen corresponding path program 61 times [2022-02-10 23:02:02,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:02,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493500712] [2022-02-10 23:02:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:02,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:02,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493500712] [2022-02-10 23:02:02,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493500712] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:02,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815139350] [2022-02-10 23:02:02,548 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:02:02,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:02,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:02,552 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 23:02:02,553 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 23:02:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:02,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 23:02:02,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:02,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:03,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815139350] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:03,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:03,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 31 [2022-02-10 23:02:03,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023046052] [2022-02-10 23:02:03,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:03,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:02:03,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:03,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:02:03,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:02:03,184 INFO L87 Difference]: Start difference. First operand 32281 states and 96861 transitions. Second operand has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 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 23:02:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:04,292 INFO L93 Difference]: Finished difference Result 36443 states and 108951 transitions. [2022-02-10 23:02:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 23:02:04,292 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 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 77 [2022-02-10 23:02:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:04,478 INFO L225 Difference]: With dead ends: 36443 [2022-02-10 23:02:04,478 INFO L226 Difference]: Without dead ends: 36371 [2022-02-10 23:02:04,479 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=813, Invalid=3879, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 23:02:04,479 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 656 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:04,479 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1751 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:02:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2022-02-10 23:02:05,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 32553. [2022-02-10 23:02:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32553 states, 32552 states have (on average 2.998924797247481) internal successors, (97621), 32552 states have internal predecessors, (97621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32553 states to 32553 states and 97621 transitions. [2022-02-10 23:02:05,136 INFO L78 Accepts]: Start accepts. Automaton has 32553 states and 97621 transitions. Word has length 77 [2022-02-10 23:02:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:05,136 INFO L470 AbstractCegarLoop]: Abstraction has 32553 states and 97621 transitions. [2022-02-10 23:02:05,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 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 23:02:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 32553 states and 97621 transitions. [2022-02-10 23:02:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:05,191 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:05,191 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:05,209 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 23:02:05,405 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,SelfDestructingSolverStorable64 [2022-02-10 23:02:05,406 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash 304117667, now seen corresponding path program 62 times [2022-02-10 23:02:05,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:05,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636433037] [2022-02-10 23:02:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:05,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:05,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636433037] [2022-02-10 23:02:05,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636433037] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:05,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378670944] [2022-02-10 23:02:05,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:02:05,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:05,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:05,641 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 23:02:05,642 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 23:02:05,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:02:05,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:05,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:05,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:06,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:06,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378670944] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:06,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:06,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-10 23:02:06,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575649442] [2022-02-10 23:02:06,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:06,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:02:06,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:02:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:02:06,282 INFO L87 Difference]: Start difference. First operand 32553 states and 97621 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:07,774 INFO L93 Difference]: Finished difference Result 46148 states and 138061 transitions. [2022-02-10 23:02:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-10 23:02:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:07,883 INFO L225 Difference]: With dead ends: 46148 [2022-02-10 23:02:07,883 INFO L226 Difference]: Without dead ends: 46076 [2022-02-10 23:02:07,884 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2221 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1403, Invalid=6253, Unknown=0, NotChecked=0, Total=7656 [2022-02-10 23:02:07,884 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 886 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:07,884 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 1967 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:02:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46076 states. [2022-02-10 23:02:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46076 to 33461. [2022-02-10 23:02:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33461 states, 33460 states have (on average 3.012253436939629) internal successors, (100790), 33460 states have internal predecessors, (100790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 100790 transitions. [2022-02-10 23:02:08,738 INFO L78 Accepts]: Start accepts. Automaton has 33461 states and 100790 transitions. Word has length 77 [2022-02-10 23:02:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:08,739 INFO L470 AbstractCegarLoop]: Abstraction has 33461 states and 100790 transitions. [2022-02-10 23:02:08,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 33461 states and 100790 transitions. [2022-02-10 23:02:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:08,795 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:08,795 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:08,813 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 23:02:09,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:09,011 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:09,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2147193931, now seen corresponding path program 63 times [2022-02-10 23:02:09,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:09,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682215455] [2022-02-10 23:02:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:09,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:09,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:09,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682215455] [2022-02-10 23:02:09,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682215455] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:09,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790530774] [2022-02-10 23:02:09,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:02:09,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:09,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:09,237 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 23:02:09,238 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 23:02:09,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 23:02:09,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:09,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:09,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:09,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:09,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790530774] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:09,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:09,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2022-02-10 23:02:09,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613560863] [2022-02-10 23:02:09,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:09,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 23:02:09,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:09,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 23:02:09,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:02:09,921 INFO L87 Difference]: Start difference. First operand 33461 states and 100790 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 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 23:02:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:11,704 INFO L93 Difference]: Finished difference Result 45082 states and 134091 transitions. [2022-02-10 23:02:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-10 23:02:11,704 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 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 77 [2022-02-10 23:02:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:11,815 INFO L225 Difference]: With dead ends: 45082 [2022-02-10 23:02:11,816 INFO L226 Difference]: Without dead ends: 44986 [2022-02-10 23:02:11,816 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2256, Invalid=10854, Unknown=0, NotChecked=0, Total=13110 [2022-02-10 23:02:11,818 INFO L934 BasicCegarLoop]: 174 mSDtfsCounter, 873 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:11,818 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2698 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:02:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44986 states. [2022-02-10 23:02:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44986 to 33505. [2022-02-10 23:02:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33505 states, 33504 states have (on average 3.01143147086915) internal successors, (100895), 33504 states have internal predecessors, (100895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33505 states to 33505 states and 100895 transitions. [2022-02-10 23:02:12,695 INFO L78 Accepts]: Start accepts. Automaton has 33505 states and 100895 transitions. Word has length 77 [2022-02-10 23:02:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:12,695 INFO L470 AbstractCegarLoop]: Abstraction has 33505 states and 100895 transitions. [2022-02-10 23:02:12,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 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 23:02:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 33505 states and 100895 transitions. [2022-02-10 23:02:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:12,755 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:12,755 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:12,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:12,971 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,SelfDestructingSolverStorable66 [2022-02-10 23:02:12,971 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2048811427, now seen corresponding path program 64 times [2022-02-10 23:02:12,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:12,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586821879] [2022-02-10 23:02:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:12,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:13,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:13,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586821879] [2022-02-10 23:02:13,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586821879] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:13,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638144740] [2022-02-10 23:02:13,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:02:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:13,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:13,120 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 23:02:13,153 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 23:02:13,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:02:13,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:13,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:02:13,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:13,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:13,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638144740] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:13,929 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:13,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2022-02-10 23:02:13,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211820731] [2022-02-10 23:02:13,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:13,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-10 23:02:13,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-10 23:02:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 23:02:13,930 INFO L87 Difference]: Start difference. First operand 33505 states and 100895 transitions. Second operand has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:16,260 INFO L93 Difference]: Finished difference Result 58794 states and 174283 transitions. [2022-02-10 23:02:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-10 23:02:16,260 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:16,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:16,413 INFO L225 Difference]: With dead ends: 58794 [2022-02-10 23:02:16,413 INFO L226 Difference]: Without dead ends: 58614 [2022-02-10 23:02:16,414 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6726 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3346, Invalid=15560, Unknown=0, NotChecked=0, Total=18906 [2022-02-10 23:02:16,414 INFO L934 BasicCegarLoop]: 174 mSDtfsCounter, 1121 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:16,415 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 3386 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:02:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58614 states. [2022-02-10 23:02:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58614 to 41717. [2022-02-10 23:02:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41717 states, 41716 states have (on average 3.0048422667561607) internal successors, (125350), 41716 states have internal predecessors, (125350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41717 states to 41717 states and 125350 transitions. [2022-02-10 23:02:17,564 INFO L78 Accepts]: Start accepts. Automaton has 41717 states and 125350 transitions. Word has length 77 [2022-02-10 23:02:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:17,565 INFO L470 AbstractCegarLoop]: Abstraction has 41717 states and 125350 transitions. [2022-02-10 23:02:17,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 41717 states and 125350 transitions. [2022-02-10 23:02:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:17,637 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:17,637 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:17,654 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 23:02:17,845 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,SelfDestructingSolverStorable67 [2022-02-10 23:02:17,845 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1711934855, now seen corresponding path program 65 times [2022-02-10 23:02:17,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:17,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611649459] [2022-02-10 23:02:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:17,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:17,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611649459] [2022-02-10 23:02:17,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611649459] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:17,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055593448] [2022-02-10 23:02:17,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:02:17,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:17,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:17,990 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 23:02:17,991 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 23:02:18,070 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 23:02:18,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:18,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:18,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:18,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:18,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055593448] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:18,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:18,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2022-02-10 23:02:18,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664503221] [2022-02-10 23:02:18,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:18,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 23:02:18,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 23:02:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:02:18,666 INFO L87 Difference]: Start difference. First operand 41717 states and 125350 transitions. Second operand has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:20,563 INFO L93 Difference]: Finished difference Result 55045 states and 162992 transitions. [2022-02-10 23:02:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 23:02:20,563 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:20,719 INFO L225 Difference]: With dead ends: 55045 [2022-02-10 23:02:20,719 INFO L226 Difference]: Without dead ends: 54949 [2022-02-10 23:02:20,720 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4967 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2715, Invalid=12047, Unknown=0, NotChecked=0, Total=14762 [2022-02-10 23:02:20,720 INFO L934 BasicCegarLoop]: 145 mSDtfsCounter, 976 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:20,721 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2420 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:02:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54949 states. [2022-02-10 23:02:21,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54949 to 40477. [2022-02-10 23:02:21,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40477 states, 40476 states have (on average 3.004150607767566) internal successors, (121596), 40476 states have internal predecessors, (121596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40477 states to 40477 states and 121596 transitions. [2022-02-10 23:02:21,936 INFO L78 Accepts]: Start accepts. Automaton has 40477 states and 121596 transitions. Word has length 77 [2022-02-10 23:02:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:21,936 INFO L470 AbstractCegarLoop]: Abstraction has 40477 states and 121596 transitions. [2022-02-10 23:02:21,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 40477 states and 121596 transitions. [2022-02-10 23:02:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:22,007 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:22,008 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:22,026 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 23:02:22,224 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,SelfDestructingSolverStorable68 [2022-02-10 23:02:22,224 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash 921558363, now seen corresponding path program 66 times [2022-02-10 23:02:22,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:22,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173441083] [2022-02-10 23:02:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:22,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:22,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:22,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173441083] [2022-02-10 23:02:22,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173441083] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:22,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363574784] [2022-02-10 23:02:22,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:02:22,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:22,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:22,358 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 23:02:22,359 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 23:02:22,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 23:02:22,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:22,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:22,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:22,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:23,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363574784] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:23,022 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:23,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-02-10 23:02:23,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127645280] [2022-02-10 23:02:23,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:23,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 23:02:23,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 23:02:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 23:02:23,023 INFO L87 Difference]: Start difference. First operand 40477 states and 121596 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 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 23:02:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:24,675 INFO L93 Difference]: Finished difference Result 53143 states and 159305 transitions. [2022-02-10 23:02:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-10 23:02:24,675 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 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 77 [2022-02-10 23:02:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:24,830 INFO L225 Difference]: With dead ends: 53143 [2022-02-10 23:02:24,830 INFO L226 Difference]: Without dead ends: 52963 [2022-02-10 23:02:24,830 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1166, Invalid=6844, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 23:02:24,832 INFO L934 BasicCegarLoop]: 187 mSDtfsCounter, 532 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:24,833 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2799 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:02:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52963 states. [2022-02-10 23:02:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52963 to 46293. [2022-02-10 23:02:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46293 states, 46292 states have (on average 3.011017022379677) internal successors, (139386), 46292 states have internal predecessors, (139386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46293 states to 46293 states and 139386 transitions. [2022-02-10 23:02:26,096 INFO L78 Accepts]: Start accepts. Automaton has 46293 states and 139386 transitions. Word has length 77 [2022-02-10 23:02:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:26,096 INFO L470 AbstractCegarLoop]: Abstraction has 46293 states and 139386 transitions. [2022-02-10 23:02:26,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 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 23:02:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 46293 states and 139386 transitions. [2022-02-10 23:02:26,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:26,171 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:26,171 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:26,187 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 23:02:26,378 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,SelfDestructingSolverStorable69 [2022-02-10 23:02:26,379 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:26,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash 265233891, now seen corresponding path program 67 times [2022-02-10 23:02:26,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:26,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838218844] [2022-02-10 23:02:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:26,470 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:26,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838218844] [2022-02-10 23:02:26,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838218844] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:26,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934498016] [2022-02-10 23:02:26,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:02:26,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:26,472 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 23:02:26,473 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 23:02:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:26,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:26,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:26,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:27,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934498016] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:27,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:27,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-10 23:02:27,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042623984] [2022-02-10 23:02:27,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:27,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:02:27,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:02:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:02:27,041 INFO L87 Difference]: Start difference. First operand 46293 states and 139386 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:28,755 INFO L93 Difference]: Finished difference Result 58970 states and 176096 transitions. [2022-02-10 23:02:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-10 23:02:28,755 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:28,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:28,915 INFO L225 Difference]: With dead ends: 58970 [2022-02-10 23:02:28,915 INFO L226 Difference]: Without dead ends: 58874 [2022-02-10 23:02:28,916 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1886, Invalid=9244, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 23:02:28,916 INFO L934 BasicCegarLoop]: 162 mSDtfsCounter, 763 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:28,916 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 2375 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:02:28,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58874 states. [2022-02-10 23:02:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58874 to 49917. [2022-02-10 23:02:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49917 states, 49916 states have (on average 3.020915137430884) internal successors, (150792), 49916 states have internal predecessors, (150792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49917 states to 49917 states and 150792 transitions. [2022-02-10 23:02:30,387 INFO L78 Accepts]: Start accepts. Automaton has 49917 states and 150792 transitions. Word has length 77 [2022-02-10 23:02:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:30,387 INFO L470 AbstractCegarLoop]: Abstraction has 49917 states and 150792 transitions. [2022-02-10 23:02:30,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 49917 states and 150792 transitions. [2022-02-10 23:02:30,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:30,467 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:30,467 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:30,483 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 23:02:30,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:30,677 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:30,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2108889589, now seen corresponding path program 68 times [2022-02-10 23:02:30,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:30,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361890900] [2022-02-10 23:02:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:30,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:30,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361890900] [2022-02-10 23:02:30,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361890900] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:30,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106118528] [2022-02-10 23:02:30,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:02:30,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:30,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:30,757 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 23:02:30,758 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 23:02:30,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:02:30,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:30,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:30,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:31,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:31,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106118528] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:31,225 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:31,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-10 23:02:31,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759039621] [2022-02-10 23:02:31,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:31,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:02:31,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:02:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:02:31,226 INFO L87 Difference]: Start difference. First operand 49917 states and 150792 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:32,197 INFO L93 Difference]: Finished difference Result 52965 states and 159059 transitions. [2022-02-10 23:02:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 23:02:32,197 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:32,329 INFO L225 Difference]: With dead ends: 52965 [2022-02-10 23:02:32,329 INFO L226 Difference]: Without dead ends: 52845 [2022-02-10 23:02:32,330 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=985, Invalid=4565, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 23:02:32,331 INFO L934 BasicCegarLoop]: 135 mSDtfsCounter, 625 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:32,331 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 1858 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:02:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52845 states. [2022-02-10 23:02:33,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52845 to 50573. [2022-02-10 23:02:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50573 states, 50572 states have (on average 3.0204856442300088) internal successors, (152752), 50572 states have internal predecessors, (152752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50573 states to 50573 states and 152752 transitions. [2022-02-10 23:02:33,647 INFO L78 Accepts]: Start accepts. Automaton has 50573 states and 152752 transitions. Word has length 77 [2022-02-10 23:02:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:33,647 INFO L470 AbstractCegarLoop]: Abstraction has 50573 states and 152752 transitions. [2022-02-10 23:02:33,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:33,647 INFO L276 IsEmpty]: Start isEmpty. Operand 50573 states and 152752 transitions. [2022-02-10 23:02:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:33,736 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:33,736 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:33,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:33,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:33,952 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1704232665, now seen corresponding path program 69 times [2022-02-10 23:02:33,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:33,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115176762] [2022-02-10 23:02:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:33,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:34,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:34,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115176762] [2022-02-10 23:02:34,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115176762] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:34,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390586418] [2022-02-10 23:02:34,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:02:34,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:34,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:34,115 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 23:02:34,116 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 23:02:34,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:02:34,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:34,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:02:34,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:34,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:34,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390586418] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:34,806 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:34,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 12] total 32 [2022-02-10 23:02:34,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892242022] [2022-02-10 23:02:34,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:34,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:02:34,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:34,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:02:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:02:34,807 INFO L87 Difference]: Start difference. First operand 50573 states and 152752 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:36,880 INFO L93 Difference]: Finished difference Result 55679 states and 167021 transitions. [2022-02-10 23:02:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 23:02:36,881 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:37,030 INFO L225 Difference]: With dead ends: 55679 [2022-02-10 23:02:37,030 INFO L226 Difference]: Without dead ends: 55619 [2022-02-10 23:02:37,031 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4321 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1900, Invalid=10756, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 23:02:37,031 INFO L934 BasicCegarLoop]: 164 mSDtfsCounter, 696 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:37,031 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2830 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:02:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55619 states. [2022-02-10 23:02:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55619 to 52498. [2022-02-10 23:02:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52498 states, 52497 states have (on average 3.0245918814408443) internal successors, (158782), 52497 states have internal predecessors, (158782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52498 states to 52498 states and 158782 transitions. [2022-02-10 23:02:38,457 INFO L78 Accepts]: Start accepts. Automaton has 52498 states and 158782 transitions. Word has length 77 [2022-02-10 23:02:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:38,457 INFO L470 AbstractCegarLoop]: Abstraction has 52498 states and 158782 transitions. [2022-02-10 23:02:38,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 52498 states and 158782 transitions. [2022-02-10 23:02:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:38,541 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:38,542 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:38,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:38,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:38,757 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1979648995, now seen corresponding path program 70 times [2022-02-10 23:02:38,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:38,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335458111] [2022-02-10 23:02:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:38,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:38,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335458111] [2022-02-10 23:02:38,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335458111] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:38,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906973877] [2022-02-10 23:02:38,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:02:38,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:38,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:38,884 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 23:02:38,885 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 23:02:38,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:02:38,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:38,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:02:38,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:39,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:02:39,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906973877] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:39,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:39,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-10 23:02:39,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179513345] [2022-02-10 23:02:39,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:39,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 23:02:39,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:39,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 23:02:39,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 23:02:39,768 INFO L87 Difference]: Start difference. First operand 52498 states and 158782 transitions. Second operand has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:41,651 INFO L93 Difference]: Finished difference Result 56930 states and 170437 transitions. [2022-02-10 23:02:41,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 23:02:41,651 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:41,782 INFO L225 Difference]: With dead ends: 56930 [2022-02-10 23:02:41,782 INFO L226 Difference]: Without dead ends: 56720 [2022-02-10 23:02:41,783 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2363, Invalid=9847, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 23:02:41,783 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 809 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:41,784 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2513 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:02:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56720 states. [2022-02-10 23:02:42,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56720 to 50461. [2022-02-10 23:02:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50461 states, 50460 states have (on average 3.021799445105034) internal successors, (152480), 50460 states have internal predecessors, (152480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50461 states to 50461 states and 152480 transitions. [2022-02-10 23:02:42,996 INFO L78 Accepts]: Start accepts. Automaton has 50461 states and 152480 transitions. Word has length 77 [2022-02-10 23:02:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:42,996 INFO L470 AbstractCegarLoop]: Abstraction has 50461 states and 152480 transitions. [2022-02-10 23:02:42,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 50461 states and 152480 transitions. [2022-02-10 23:02:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:43,088 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:43,088 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:43,104 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 23:02:43,304 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,SelfDestructingSolverStorable73 [2022-02-10 23:02:43,304 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:43,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1781097287, now seen corresponding path program 71 times [2022-02-10 23:02:43,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:43,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884319173] [2022-02-10 23:02:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:43,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:43,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:43,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884319173] [2022-02-10 23:02:43,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884319173] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:43,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348828830] [2022-02-10 23:02:43,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:02:43,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:43,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:43,662 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 23:02:43,663 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 23:02:43,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 23:02:43,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:43,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:02:43,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:44,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:44,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348828830] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:44,254 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:44,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-02-10 23:02:44,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87014840] [2022-02-10 23:02:44,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:44,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:02:44,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:02:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:02:44,255 INFO L87 Difference]: Start difference. First operand 50461 states and 152480 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 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 23:02:45,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:45,544 INFO L93 Difference]: Finished difference Result 65246 states and 194541 transitions. [2022-02-10 23:02:45,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 23:02:45,545 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 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 77 [2022-02-10 23:02:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:45,729 INFO L225 Difference]: With dead ends: 65246 [2022-02-10 23:02:45,729 INFO L226 Difference]: Without dead ends: 65198 [2022-02-10 23:02:45,730 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=792, Invalid=4178, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 23:02:45,730 INFO L934 BasicCegarLoop]: 162 mSDtfsCounter, 622 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:45,730 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 1878 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:02:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65198 states. [2022-02-10 23:02:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65198 to 50125. [2022-02-10 23:02:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50125 states, 50124 states have (on average 3.022025377064879) internal successors, (151476), 50124 states have internal predecessors, (151476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50125 states to 50125 states and 151476 transitions. [2022-02-10 23:02:47,122 INFO L78 Accepts]: Start accepts. Automaton has 50125 states and 151476 transitions. Word has length 77 [2022-02-10 23:02:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:47,122 INFO L470 AbstractCegarLoop]: Abstraction has 50125 states and 151476 transitions. [2022-02-10 23:02:47,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 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 23:02:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 50125 states and 151476 transitions. [2022-02-10 23:02:47,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:47,216 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:47,216 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:47,233 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 23:02:47,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:47,419 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash -401938913, now seen corresponding path program 72 times [2022-02-10 23:02:47,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:47,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520948894] [2022-02-10 23:02:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:47,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:47,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:47,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520948894] [2022-02-10 23:02:47,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520948894] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:47,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232894087] [2022-02-10 23:02:47,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:02:47,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:47,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:47,517 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 23:02:47,518 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 23:02:47,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 23:02:47,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:47,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:47,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:47,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:02:48,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232894087] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:48,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:48,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-02-10 23:02:48,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969999171] [2022-02-10 23:02:48,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:48,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:02:48,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:02:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:02:48,171 INFO L87 Difference]: Start difference. First operand 50125 states and 151476 transitions. Second operand has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:49,644 INFO L93 Difference]: Finished difference Result 55334 states and 166142 transitions. [2022-02-10 23:02:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 23:02:49,645 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:49,900 INFO L225 Difference]: With dead ends: 55334 [2022-02-10 23:02:49,901 INFO L226 Difference]: Without dead ends: 55304 [2022-02-10 23:02:49,901 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1555, Invalid=7565, Unknown=0, NotChecked=0, Total=9120 [2022-02-10 23:02:49,901 INFO L934 BasicCegarLoop]: 143 mSDtfsCounter, 590 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:49,901 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 2009 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:02:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55304 states. [2022-02-10 23:02:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55304 to 52449. [2022-02-10 23:02:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52449 states, 52448 states have (on average 3.0233183343502135) internal successors, (158567), 52448 states have internal predecessors, (158567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52449 states to 52449 states and 158567 transitions. [2022-02-10 23:02:51,062 INFO L78 Accepts]: Start accepts. Automaton has 52449 states and 158567 transitions. Word has length 77 [2022-02-10 23:02:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:51,062 INFO L470 AbstractCegarLoop]: Abstraction has 52449 states and 158567 transitions. [2022-02-10 23:02:51,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 52449 states and 158567 transitions. [2022-02-10 23:02:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:51,165 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:51,165 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:51,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:51,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:51,379 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1940822727, now seen corresponding path program 73 times [2022-02-10 23:02:51,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:51,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909388925] [2022-02-10 23:02:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:51,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:51,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:51,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909388925] [2022-02-10 23:02:51,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909388925] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:51,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883204276] [2022-02-10 23:02:51,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:02:51,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:51,497 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 23:02:51,498 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 23:02:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:51,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:51,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:51,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:52,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883204276] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:52,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:52,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-02-10 23:02:52,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663627844] [2022-02-10 23:02:52,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:52,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:02:52,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:52,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:02:52,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:02:52,354 INFO L87 Difference]: Start difference. First operand 52449 states and 158567 transitions. Second operand has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 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 23:02:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:53,915 INFO L93 Difference]: Finished difference Result 55071 states and 165362 transitions. [2022-02-10 23:02:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 23:02:53,915 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 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 77 [2022-02-10 23:02:53,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:54,092 INFO L225 Difference]: With dead ends: 55071 [2022-02-10 23:02:54,092 INFO L226 Difference]: Without dead ends: 54987 [2022-02-10 23:02:54,093 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=962, Invalid=5200, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 23:02:54,093 INFO L934 BasicCegarLoop]: 159 mSDtfsCounter, 562 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:54,093 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 2132 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:02:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54987 states. [2022-02-10 23:02:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54987 to 51673. [2022-02-10 23:02:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51673 states, 51672 states have (on average 3.0223912370335966) internal successors, (156173), 51672 states have internal predecessors, (156173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51673 states to 51673 states and 156173 transitions. [2022-02-10 23:02:55,254 INFO L78 Accepts]: Start accepts. Automaton has 51673 states and 156173 transitions. Word has length 77 [2022-02-10 23:02:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:55,254 INFO L470 AbstractCegarLoop]: Abstraction has 51673 states and 156173 transitions. [2022-02-10 23:02:55,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 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 23:02:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 51673 states and 156173 transitions. [2022-02-10 23:02:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:55,343 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:55,344 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:55,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-10 23:02:55,559 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,SelfDestructingSolverStorable76 [2022-02-10 23:02:55,559 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash 848278107, now seen corresponding path program 74 times [2022-02-10 23:02:55,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:55,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407088788] [2022-02-10 23:02:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:55,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:55,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:55,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407088788] [2022-02-10 23:02:55,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407088788] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:55,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359565269] [2022-02-10 23:02:55,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:02:55,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:55,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:55,673 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 23:02:55,673 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 23:02:55,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:02:55,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:55,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:02:55,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:56,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:56,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359565269] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:56,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:56,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-02-10 23:02:56,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708373833] [2022-02-10 23:02:56,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:56,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 23:02:56,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:56,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 23:02:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 23:02:56,509 INFO L87 Difference]: Start difference. First operand 51673 states and 156173 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 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 23:02:57,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:57,805 INFO L93 Difference]: Finished difference Result 54055 states and 162652 transitions. [2022-02-10 23:02:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 23:02:57,805 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 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 77 [2022-02-10 23:02:57,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:58,083 INFO L225 Difference]: With dead ends: 54055 [2022-02-10 23:02:58,084 INFO L226 Difference]: Without dead ends: 53947 [2022-02-10 23:02:58,084 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=804, Invalid=4598, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 23:02:58,084 INFO L934 BasicCegarLoop]: 167 mSDtfsCounter, 434 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:58,084 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 2434 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:02:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53947 states. [2022-02-10 23:02:59,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53947 to 51757. [2022-02-10 23:02:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51757 states, 51756 states have (on average 3.022490146070021) internal successors, (156432), 51756 states have internal predecessors, (156432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51757 states to 51757 states and 156432 transitions. [2022-02-10 23:02:59,323 INFO L78 Accepts]: Start accepts. Automaton has 51757 states and 156432 transitions. Word has length 77 [2022-02-10 23:02:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:59,323 INFO L470 AbstractCegarLoop]: Abstraction has 51757 states and 156432 transitions. [2022-02-10 23:02:59,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 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 23:02:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 51757 states and 156432 transitions. [2022-02-10 23:02:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:59,420 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:59,420 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:02:59,438 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 23:02:59,636 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,SelfDestructingSolverStorable77 [2022-02-10 23:02:59,636 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:02:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash 191953635, now seen corresponding path program 75 times [2022-02-10 23:02:59,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:59,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767362008] [2022-02-10 23:02:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:59,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:59,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:59,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767362008] [2022-02-10 23:02:59,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767362008] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:59,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112755110] [2022-02-10 23:02:59,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:02:59,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:59,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:59,740 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 23:02:59,741 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 23:02:59,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:02:59,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:59,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:02:59,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:00,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:00,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112755110] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:00,366 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:00,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-02-10 23:03:00,366 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746045755] [2022-02-10 23:03:00,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:00,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 23:03:00,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:00,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 23:03:00,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 23:03:00,367 INFO L87 Difference]: Start difference. First operand 51757 states and 156432 transitions. Second operand has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:03,031 INFO L93 Difference]: Finished difference Result 71838 states and 214721 transitions. [2022-02-10 23:03:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-10 23:03:03,032 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 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 77 [2022-02-10 23:03:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:03,216 INFO L225 Difference]: With dead ends: 71838 [2022-02-10 23:03:03,216 INFO L226 Difference]: Without dead ends: 71754 [2022-02-10 23:03:03,217 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3599, Invalid=17571, Unknown=0, NotChecked=0, Total=21170 [2022-02-10 23:03:03,217 INFO L934 BasicCegarLoop]: 170 mSDtfsCounter, 1234 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:03,217 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 2539 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:03:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71754 states. [2022-02-10 23:03:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71754 to 52517. [2022-02-10 23:03:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52517 states, 52516 states have (on average 3.0226597608347934) internal successors, (158738), 52516 states have internal predecessors, (158738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52517 states to 52517 states and 158738 transitions. [2022-02-10 23:03:04,819 INFO L78 Accepts]: Start accepts. Automaton has 52517 states and 158738 transitions. Word has length 77 [2022-02-10 23:03:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:04,819 INFO L470 AbstractCegarLoop]: Abstraction has 52517 states and 158738 transitions. [2022-02-10 23:03:04,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 52517 states and 158738 transitions. [2022-02-10 23:03:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:03:04,914 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:04,914 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:03:04,932 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 23:03:05,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:05,131 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2035609333, now seen corresponding path program 76 times [2022-02-10 23:03:05,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:05,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90030130] [2022-02-10 23:03:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:05,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:05,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90030130] [2022-02-10 23:03:05,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90030130] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:05,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116240590] [2022-02-10 23:03:05,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:03:05,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:05,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:05,225 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 23:03:05,226 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 23:03:05,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:03:05,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:05,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:03:05,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:05,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:05,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116240590] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:05,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:05,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-02-10 23:03:05,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796422492] [2022-02-10 23:03:05,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:05,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 23:03:05,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:05,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 23:03:05,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:03:05,742 INFO L87 Difference]: Start difference. First operand 52517 states and 158738 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:06,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:06,852 INFO L93 Difference]: Finished difference Result 54275 states and 163351 transitions. [2022-02-10 23:03:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 23:03:06,852 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 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 77 [2022-02-10 23:03:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:06,995 INFO L225 Difference]: With dead ends: 54275 [2022-02-10 23:03:06,995 INFO L226 Difference]: Without dead ends: 54179 [2022-02-10 23:03:06,995 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=827, Invalid=4003, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 23:03:06,995 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 602 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:06,995 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 1535 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 23:03:07,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54179 states. [2022-02-10 23:03:08,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54179 to 52905. [2022-02-10 23:03:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52905 states, 52904 states have (on average 3.022474671102374) internal successors, (159901), 52904 states have internal predecessors, (159901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52905 states to 52905 states and 159901 transitions. [2022-02-10 23:03:08,251 INFO L78 Accepts]: Start accepts. Automaton has 52905 states and 159901 transitions. Word has length 77 [2022-02-10 23:03:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:08,251 INFO L470 AbstractCegarLoop]: Abstraction has 52905 states and 159901 transitions. [2022-02-10 23:03:08,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 52905 states and 159901 transitions. [2022-02-10 23:03:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:03:08,543 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:08,543 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:03:08,593 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 23:03:08,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:08,755 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash 223279015, now seen corresponding path program 77 times [2022-02-10 23:03:08,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:08,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752845359] [2022-02-10 23:03:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:08,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:08,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752845359] [2022-02-10 23:03:08,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752845359] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:08,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395686387] [2022-02-10 23:03:08,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:03:08,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:08,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:08,856 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 23:03:08,856 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 23:03:08,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:03:08,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:08,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:03:08,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:09,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:03:09,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395686387] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:09,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:09,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-10 23:03:09,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836519267] [2022-02-10 23:03:09,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:09,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 23:03:09,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 23:03:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1124, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 23:03:09,447 INFO L87 Difference]: Start difference. First operand 52905 states and 159901 transitions. Second operand has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:11,075 INFO L93 Difference]: Finished difference Result 58061 states and 173874 transitions. [2022-02-10 23:03:11,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 23:03:11,075 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 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 77 [2022-02-10 23:03:11,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:11,214 INFO L225 Difference]: With dead ends: 58061 [2022-02-10 23:03:11,214 INFO L226 Difference]: Without dead ends: 57911 [2022-02-10 23:03:11,215 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3034 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1763, Invalid=7743, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 23:03:11,215 INFO L934 BasicCegarLoop]: 153 mSDtfsCounter, 691 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:11,216 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 2534 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:03:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57911 states. [2022-02-10 23:03:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57911 to 53649. [2022-02-10 23:03:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53649 states, 53648 states have (on average 3.02108186698479) internal successors, (162075), 53648 states have internal predecessors, (162075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53649 states to 53649 states and 162075 transitions. [2022-02-10 23:03:12,409 INFO L78 Accepts]: Start accepts. Automaton has 53649 states and 162075 transitions. Word has length 77 [2022-02-10 23:03:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:12,409 INFO L470 AbstractCegarLoop]: Abstraction has 53649 states and 162075 transitions. [2022-02-10 23:03:12,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 53649 states and 162075 transitions. [2022-02-10 23:03:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:03:12,518 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:12,518 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:03:12,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-02-10 23:03:12,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:12,732 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash -155653451, now seen corresponding path program 78 times [2022-02-10 23:03:12,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:12,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625451684] [2022-02-10 23:03:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:12,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:13,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:13,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625451684] [2022-02-10 23:03:13,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625451684] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:13,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41685743] [2022-02-10 23:03:13,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:03:13,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:13,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:13,147 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 23:03:13,148 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 23:03:13,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 23:03:13,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:13,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:03:13,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:13,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:03:13,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41685743] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:13,752 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:13,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 31 [2022-02-10 23:03:13,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332219915] [2022-02-10 23:03:13,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:13,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:03:13,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:13,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:03:13,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:03:13,753 INFO L87 Difference]: Start difference. First operand 53649 states and 162075 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:14,825 INFO L93 Difference]: Finished difference Result 60411 states and 181558 transitions. [2022-02-10 23:03:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 23:03:14,825 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 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 77 [2022-02-10 23:03:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:15,165 INFO L225 Difference]: With dead ends: 60411 [2022-02-10 23:03:15,165 INFO L226 Difference]: Without dead ends: 60315 [2022-02-10 23:03:15,166 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 23:03:15,166 INFO L934 BasicCegarLoop]: 134 mSDtfsCounter, 562 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:15,166 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 2166 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:03:15,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60315 states. [2022-02-10 23:03:16,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60315 to 56021. [2022-02-10 23:03:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56021 states, 56020 states have (on average 3.023884327026062) internal successors, (169398), 56020 states have internal predecessors, (169398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56021 states to 56021 states and 169398 transitions. [2022-02-10 23:03:16,458 INFO L78 Accepts]: Start accepts. Automaton has 56021 states and 169398 transitions. Word has length 77 [2022-02-10 23:03:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:16,458 INFO L470 AbstractCegarLoop]: Abstraction has 56021 states and 169398 transitions. [2022-02-10 23:03:16,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 56021 states and 169398 transitions. [2022-02-10 23:03:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:03:16,577 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:16,577 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 23:03:16,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:16,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:16,793 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:16,794 INFO L85 PathProgramCache]: Analyzing trace with hash 31792739, now seen corresponding path program 79 times [2022-02-10 23:03:16,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:16,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937117926] [2022-02-10 23:03:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:16,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:16,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:16,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937117926] [2022-02-10 23:03:16,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937117926] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:16,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287440395] [2022-02-10 23:03:16,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:03:16,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:16,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:16,900 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 23:03:16,901 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 23:03:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:16,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 23:03:16,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:17,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 23:03:17,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287440395] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:17,802 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:17,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-02-10 23:03:17,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760223679] [2022-02-10 23:03:17,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:17,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-10 23:03:17,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:17,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-10 23:03:17,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 23:03:17,803 INFO L87 Difference]: Start difference. First operand 56021 states and 169398 transitions. Second operand has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:19,300 INFO L93 Difference]: Finished difference Result 63634 states and 190182 transitions. [2022-02-10 23:03:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 23:03:19,300 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 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 77 [2022-02-10 23:03:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:19,443 INFO L225 Difference]: With dead ends: 63634 [2022-02-10 23:03:19,443 INFO L226 Difference]: Without dead ends: 63469 [2022-02-10 23:03:19,444 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3205 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1981, Invalid=8321, Unknown=0, NotChecked=0, Total=10302 [2022-02-10 23:03:19,444 INFO L934 BasicCegarLoop]: 155 mSDtfsCounter, 744 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:19,444 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 2607 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:03:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63469 states. [2022-02-10 23:03:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63469 to 54757. [2022-02-10 23:03:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54757 states, 54756 states have (on average 3.020052596975674) internal successors, (165366), 54756 states have internal predecessors, (165366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54757 states to 54757 states and 165366 transitions. [2022-02-10 23:03:20,773 INFO L78 Accepts]: Start accepts. Automaton has 54757 states and 165366 transitions. Word has length 77 [2022-02-10 23:03:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:20,773 INFO L470 AbstractCegarLoop]: Abstraction has 54757 states and 165366 transitions. [2022-02-10 23:03:20,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 54757 states and 165366 transitions. [2022-02-10 23:03:20,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 23:03:20,881 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:20,881 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:20,900 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 23:03:21,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:21,098 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1890973665, now seen corresponding path program 80 times [2022-02-10 23:03:21,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:21,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950012480] [2022-02-10 23:03:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:21,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:21,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:21,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950012480] [2022-02-10 23:03:21,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950012480] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:21,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611906153] [2022-02-10 23:03:21,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:03:21,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:21,196 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 23:03:21,197 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 23:03:21,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:03:21,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:21,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 23:03:21,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:21,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:22,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611906153] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:22,115 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:22,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2022-02-10 23:03:22,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149911126] [2022-02-10 23:03:22,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:22,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 23:03:22,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 23:03:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:03:22,115 INFO L87 Difference]: Start difference. First operand 54757 states and 165366 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 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 23:03:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:22,554 INFO L93 Difference]: Finished difference Result 86252 states and 263480 transitions. [2022-02-10 23:03:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:03:22,555 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 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 79 [2022-02-10 23:03:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:23,070 INFO L225 Difference]: With dead ends: 86252 [2022-02-10 23:03:23,070 INFO L226 Difference]: Without dead ends: 86024 [2022-02-10 23:03:23,070 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-02-10 23:03:23,070 INFO L934 BasicCegarLoop]: 141 mSDtfsCounter, 313 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:23,070 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 959 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:03:23,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86024 states. [2022-02-10 23:03:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86024 to 78062. [2022-02-10 23:03:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78062 states, 78061 states have (on average 3.033986241529061) internal successors, (236836), 78061 states have internal predecessors, (236836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78062 states to 78062 states and 236836 transitions. [2022-02-10 23:03:24,968 INFO L78 Accepts]: Start accepts. Automaton has 78062 states and 236836 transitions. Word has length 79 [2022-02-10 23:03:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:24,968 INFO L470 AbstractCegarLoop]: Abstraction has 78062 states and 236836 transitions. [2022-02-10 23:03:24,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 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 23:03:24,969 INFO L276 IsEmpty]: Start isEmpty. Operand 78062 states and 236836 transitions. [2022-02-10 23:03:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 23:03:25,108 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:25,108 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:25,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-10 23:03:25,324 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,SelfDestructingSolverStorable83 [2022-02-10 23:03:25,324 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:25,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1781177015, now seen corresponding path program 81 times [2022-02-10 23:03:25,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:25,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278340185] [2022-02-10 23:03:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:25,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:25,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:25,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278340185] [2022-02-10 23:03:25,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278340185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:25,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107521354] [2022-02-10 23:03:25,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:03:25,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:25,466 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 23:03:25,467 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 23:03:25,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 23:03:25,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:25,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 23:03:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:25,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:25,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107521354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:25,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:25,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 22 [2022-02-10 23:03:25,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986847917] [2022-02-10 23:03:25,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:25,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 23:03:25,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:25,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 23:03:25,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-02-10 23:03:25,918 INFO L87 Difference]: Start difference. First operand 78062 states and 236836 transitions. Second operand has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:27,175 INFO L93 Difference]: Finished difference Result 90363 states and 273656 transitions. [2022-02-10 23:03:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 23:03:27,176 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 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 79 [2022-02-10 23:03:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:27,418 INFO L225 Difference]: With dead ends: 90363 [2022-02-10 23:03:27,418 INFO L226 Difference]: Without dead ends: 90348 [2022-02-10 23:03:27,419 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=342, Invalid=1728, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 23:03:27,419 INFO L934 BasicCegarLoop]: 224 mSDtfsCounter, 443 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:27,419 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1991 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:03:27,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90348 states. [2022-02-10 23:03:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90348 to 81518. [2022-02-10 23:03:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81518 states, 81517 states have (on average 3.0429480967160223) internal successors, (248052), 81517 states have internal predecessors, (248052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81518 states to 81518 states and 248052 transitions. [2022-02-10 23:03:29,671 INFO L78 Accepts]: Start accepts. Automaton has 81518 states and 248052 transitions. Word has length 79 [2022-02-10 23:03:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:29,671 INFO L470 AbstractCegarLoop]: Abstraction has 81518 states and 248052 transitions. [2022-02-10 23:03:29,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 81518 states and 248052 transitions. [2022-02-10 23:03:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 23:03:29,822 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:29,822 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:29,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:30,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:30,038 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash -273105791, now seen corresponding path program 82 times [2022-02-10 23:03:30,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:30,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129090358] [2022-02-10 23:03:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:30,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:30,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:30,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129090358] [2022-02-10 23:03:30,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129090358] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:30,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101392612] [2022-02-10 23:03:30,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:03:30,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:30,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:30,131 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 23:03:30,132 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 23:03:30,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:03:30,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:30,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 23:03:30,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:30,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:30,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101392612] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:30,896 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:30,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-02-10 23:03:30,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144188229] [2022-02-10 23:03:30,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:30,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 23:03:30,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:30,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 23:03:30,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:03:30,898 INFO L87 Difference]: Start difference. First operand 81518 states and 248052 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 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 23:03:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:34,983 INFO L93 Difference]: Finished difference Result 115213 states and 345840 transitions. [2022-02-10 23:03:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-02-10 23:03:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 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 79 [2022-02-10 23:03:34,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:35,535 INFO L225 Difference]: With dead ends: 115213 [2022-02-10 23:03:35,535 INFO L226 Difference]: Without dead ends: 115003 [2022-02-10 23:03:35,536 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10414 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3727, Invalid=23995, Unknown=0, NotChecked=0, Total=27722 [2022-02-10 23:03:35,536 INFO L934 BasicCegarLoop]: 227 mSDtfsCounter, 991 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:35,536 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 3279 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:03:35,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115003 states. [2022-02-10 23:03:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115003 to 84166. [2022-02-10 23:03:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84166 states, 84165 states have (on average 3.038578981762015) internal successors, (255742), 84165 states have internal predecessors, (255742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84166 states to 84166 states and 255742 transitions. [2022-02-10 23:03:37,826 INFO L78 Accepts]: Start accepts. Automaton has 84166 states and 255742 transitions. Word has length 79 [2022-02-10 23:03:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:37,827 INFO L470 AbstractCegarLoop]: Abstraction has 84166 states and 255742 transitions. [2022-02-10 23:03:37,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 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 23:03:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 84166 states and 255742 transitions. [2022-02-10 23:03:37,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-10 23:03:37,988 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:37,988 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:38,004 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 23:03:38,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:38,204 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:03:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash 261115223, now seen corresponding path program 83 times [2022-02-10 23:03:38,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:38,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024534434] [2022-02-10 23:03:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:38,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:38,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:38,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024534434] [2022-02-10 23:03:38,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024534434] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:38,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714815444] [2022-02-10 23:03:38,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:03:38,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:38,623 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 23:03:38,623 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 23:03:38,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 23:03:38,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:38,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:03:38,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:39,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:39,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714815444] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:39,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:39,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2022-02-10 23:03:39,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020512669] [2022-02-10 23:03:39,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:39,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:03:39,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:39,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:03:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1218, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:03:39,651 INFO L87 Difference]: Start difference. First operand 84166 states and 255742 transitions. Second operand has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)