/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-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 15:46:52,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 15:46:52,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 15:46:52,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-01 15:46:52,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-01 15:46:52,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-01 15:46:52,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-01 15:46:52,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-01 15:46:52,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-01 15:46:52,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-01 15:46:52,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-01 15:46:52,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-01 15:46:52,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-01 15:46:52,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-01 15:46:52,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-01 15:46:52,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-01 15:46:52,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-01 15:46:52,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-01 15:46:52,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-01 15:46:52,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-01 15:46:52,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-01 15:46:52,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-01 15:46:52,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-01 15:46:52,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-01 15:46:52,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-01 15:46:52,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-01 15:46:52,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-01 15:46:52,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-01 15:46:52,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-01 15:46:52,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-01 15:46:52,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-01 15:46:52,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-01 15:46:52,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-01 15:46:52,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-01 15:46:52,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-01 15:46:52,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-01 15:46:52,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-01 15:46:52,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-01 15:46:52,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 15:46:52,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 15:46:52,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 15:46:52,147 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 [2022-03-01 15:46:52,185 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 15:46:52,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 15:46:52,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 15:46:52,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 15:46:52,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 15:46:52,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 15:46:52,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 15:46:52,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 15:46:52,187 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 15:46:52,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 15:46:52,188 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 15:46:52,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 15:46:52,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 15:46:52,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 15:46:52,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 15:46:52,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 15:46:52,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 15:46:52,189 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 15:46:52,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 15:46:52,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 15:46:52,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 15:46:52,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 15:46:52,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 15:46:52,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 15:46:52,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 15:46:52,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:46:52,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 15:46:52,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 15:46:52,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 15:46:52,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 15:46:52,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 15:46:52,192 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 15:46:52,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 15:46:52,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 15:46:52,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 15:46:52,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 15:46:52,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 15:46:52,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 15:46:52,429 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 15:46:52,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-03-01 15:46:52,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8274f6b8/6e74cb52df6f4725b732276925629fdd/FLAGff7828777 [2022-03-01 15:46:52,857 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 15:46:52,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-03-01 15:46:52,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8274f6b8/6e74cb52df6f4725b732276925629fdd/FLAGff7828777 [2022-03-01 15:46:53,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8274f6b8/6e74cb52df6f4725b732276925629fdd [2022-03-01 15:46:53,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 15:46:53,281 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 15:46:53,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 15:46:53,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 15:46:53,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 15:46:53,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530f09bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53, skipping insertion in model container [2022-03-01 15:46:53,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 15:46:53,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 15:46:53,489 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-bad-threaded-sum-2.wvr.c[2476,2489] [2022-03-01 15:46:53,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:46:53,498 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 15:46:53,515 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-bad-threaded-sum-2.wvr.c[2476,2489] [2022-03-01 15:46:53,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:46:53,526 INFO L208 MainTranslator]: Completed translation [2022-03-01 15:46:53,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53 WrapperNode [2022-03-01 15:46:53,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 15:46:53,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 15:46:53,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 15:46:53,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 15:46:53,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,555 INFO L137 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-03-01 15:46:53,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 15:46:53,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 15:46:53,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 15:46:53,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 15:46:53,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 15:46:53,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 15:46:53,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 15:46:53,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 15:46:53,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (1/1) ... [2022-03-01 15:46:53,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:46:53,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:46:53,605 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) [2022-03-01 15:46:53,607 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 [2022-03-01 15:46:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 15:46:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 15:46:53,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 15:46:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 15:46:53,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 15:46:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 15:46:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 15:46:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 15:46:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 15:46:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 15:46:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 15:46:53,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 15:46:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 15:46:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 15:46:53,645 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 15:46:53,722 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 15:46:53,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 15:46:53,880 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 15:46:53,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 15:46:53,921 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 15:46:53,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:46:53 BoogieIcfgContainer [2022-03-01 15:46:53,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 15:46:53,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 15:46:53,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 15:46:53,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 15:46:53,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 03:46:53" (1/3) ... [2022-03-01 15:46:53,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105b663e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:46:53, skipping insertion in model container [2022-03-01 15:46:53,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:46:53" (2/3) ... [2022-03-01 15:46:53,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105b663e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:46:53, skipping insertion in model container [2022-03-01 15:46:53,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:46:53" (3/3) ... [2022-03-01 15:46:53,930 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2022-03-01 15:46:53,934 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 15:46:53,934 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 15:46:53,934 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 15:46:53,935 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 15:46:53,966 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,966 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,968 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,968 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,972 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,972 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,973 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,973 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,974 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,974 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,974 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,975 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,977 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,977 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,981 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,982 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,982 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,983 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,983 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,983 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:46:53,986 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 15:46:54,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 15:46:54,045 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 15:46:54,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 15:46:54,066 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 88 transitions, 192 flow [2022-03-01 15:46:54,117 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-01 15:46:54,136 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:46:54,137 INFO L514 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] [2022-03-01 15:46:54,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:46:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:46:54,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1436780155, now seen corresponding path program 1 times [2022-03-01 15:46:54,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:46:54,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117494247] [2022-03-01 15:46:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:46:54,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:46:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:46:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:46:54,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:46:54,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117494247] [2022-03-01 15:46:54,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117494247] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:46:54,385 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:46:54,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 15:46:54,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600278653] [2022-03-01 15:46:54,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:46:54,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 15:46:54,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:46:54,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 15:46:54,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:46:54,427 INFO L87 Difference]: Start difference. First operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:46:54,494 INFO L93 Difference]: Finished difference Result 336 states and 794 transitions. [2022-03-01 15:46:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 15:46:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-03-01 15:46:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:46:54,515 INFO L225 Difference]: With dead ends: 336 [2022-03-01 15:46:54,515 INFO L226 Difference]: Without dead ends: 334 [2022-03-01 15:46:54,517 INFO L932 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 [2022-03-01 15:46:54,525 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:46:54,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:46:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-03-01 15:46:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-03-01 15:46:54,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 2.3783783783783785) internal successors, (792), 333 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 792 transitions. [2022-03-01 15:46:54,611 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 792 transitions. Word has length 64 [2022-03-01 15:46:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:46:54,612 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 792 transitions. [2022-03-01 15:46:54,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 792 transitions. [2022-03-01 15:46:54,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-01 15:46:54,616 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:46:54,616 INFO L514 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] [2022-03-01 15:46:54,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 15:46:54,617 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:46:54,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:46:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1759613989, now seen corresponding path program 1 times [2022-03-01 15:46:54,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:46:54,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988906691] [2022-03-01 15:46:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:46:54,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:46:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:46:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:46:54,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:46:54,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988906691] [2022-03-01 15:46:54,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988906691] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:46:54,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:46:54,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:46:54,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471832653] [2022-03-01 15:46:54,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:46:54,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:46:54,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:46:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:46:54,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:46:54,904 INFO L87 Difference]: Start difference. First operand 334 states and 792 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:55,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:46:55,034 INFO L93 Difference]: Finished difference Result 481 states and 1212 transitions. [2022-03-01 15:46:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:46:55,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-03-01 15:46:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:46:55,038 INFO L225 Difference]: With dead ends: 481 [2022-03-01 15:46:55,038 INFO L226 Difference]: Without dead ends: 433 [2022-03-01 15:46:55,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:46:55,040 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 78 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:46:55,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 223 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:46:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-01 15:46:55,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 377. [2022-03-01 15:46:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.4627659574468086) internal successors, (926), 376 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:55,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 926 transitions. [2022-03-01 15:46:55,057 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 926 transitions. Word has length 64 [2022-03-01 15:46:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:46:55,058 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 926 transitions. [2022-03-01 15:46:55,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 926 transitions. [2022-03-01 15:46:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-01 15:46:55,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:46:55,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:46:55,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 15:46:55,072 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:46:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:46:55,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1477238862, now seen corresponding path program 1 times [2022-03-01 15:46:55,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:46:55,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948603928] [2022-03-01 15:46:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:46:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:46:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:46:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:46:55,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:46:55,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948603928] [2022-03-01 15:46:55,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948603928] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:46:55,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902877177] [2022-03-01 15:46:55,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:46:55,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:46:55,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:46:55,798 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) [2022-03-01 15:46:55,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 15:46:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:46:55,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 15:46:55,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:46:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:46:56,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:46:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:46:58,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902877177] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-01 15:46:58,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-01 15:46:58,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13, 15] total 31 [2022-03-01 15:46:58,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522750303] [2022-03-01 15:46:58,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:46:58,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 15:46:58,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:46:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 15:46:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:46:58,164 INFO L87 Difference]: Start difference. First operand 377 states and 926 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:46:59,735 INFO L93 Difference]: Finished difference Result 1227 states and 3160 transitions. [2022-03-01 15:46:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 15:46:59,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-03-01 15:46:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:46:59,741 INFO L225 Difference]: With dead ends: 1227 [2022-03-01 15:46:59,741 INFO L226 Difference]: Without dead ends: 1116 [2022-03-01 15:46:59,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 15:46:59,743 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 408 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:46:59,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 1085 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 399 Invalid, 0 Unknown, 78 Unchecked, 0.5s Time] [2022-03-01 15:46:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-03-01 15:46:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 445. [2022-03-01 15:46:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.515765765765766) internal successors, (1117), 444 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1117 transitions. [2022-03-01 15:46:59,764 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1117 transitions. Word has length 68 [2022-03-01 15:46:59,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:46:59,764 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1117 transitions. [2022-03-01 15:46:59,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:46:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1117 transitions. [2022-03-01 15:46:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-01 15:46:59,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:46:59,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:46:59,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-01 15:46:59,986 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 [2022-03-01 15:46:59,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:46:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:46:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1846595665, now seen corresponding path program 1 times [2022-03-01 15:46:59,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:46:59,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049738205] [2022-03-01 15:46:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:46:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:47:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:47:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:47:00,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:47:00,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049738205] [2022-03-01 15:47:00,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049738205] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:47:00,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735746104] [2022-03-01 15:47:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:47:00,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:47:00,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:47:00,736 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) [2022-03-01 15:47:00,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 15:47:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:47:00,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-01 15:47:00,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:47:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:47:01,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:47:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:47:04,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735746104] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:47:04,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:47:04,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 35 [2022-03-01 15:47:04,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158087419] [2022-03-01 15:47:04,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:47:04,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 15:47:04,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:47:04,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 15:47:04,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=936, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 15:47:04,091 INFO L87 Difference]: Start difference. First operand 445 states and 1117 transitions. Second operand has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 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) [2022-03-01 15:47:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:47:12,724 INFO L93 Difference]: Finished difference Result 3417 states and 8680 transitions. [2022-03-01 15:47:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-01 15:47:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 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 71 [2022-03-01 15:47:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:47:12,736 INFO L225 Difference]: With dead ends: 3417 [2022-03-01 15:47:12,736 INFO L226 Difference]: Without dead ends: 2352 [2022-03-01 15:47:12,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3330 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1790, Invalid=8110, Unknown=0, NotChecked=0, Total=9900 [2022-03-01 15:47:12,741 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 1615 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:47:12,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 2267 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1141 Invalid, 0 Unknown, 93 Unchecked, 2.3s Time] [2022-03-01 15:47:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-03-01 15:47:12,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 867. [2022-03-01 15:47:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6547344110854505) internal successors, (2299), 866 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:47:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2299 transitions. [2022-03-01 15:47:12,776 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2299 transitions. Word has length 71 [2022-03-01 15:47:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:47:12,776 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2299 transitions. [2022-03-01 15:47:12,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 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) [2022-03-01 15:47:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2299 transitions. [2022-03-01 15:47:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:47:12,779 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:47:12,779 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:47:12,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-01 15:47:12,984 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 [2022-03-01 15:47:12,984 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:47:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:47:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1244300115, now seen corresponding path program 2 times [2022-03-01 15:47:12,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:47:12,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242116989] [2022-03-01 15:47:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:47:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:47:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:47:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:47:13,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:47:13,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242116989] [2022-03-01 15:47:13,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242116989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:47:13,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:47:13,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:47:13,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285409618] [2022-03-01 15:47:13,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:47:13,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:47:13,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:47:13,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:47:13,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:47:13,110 INFO L87 Difference]: Start difference. First operand 867 states and 2299 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:47:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:47:13,278 INFO L93 Difference]: Finished difference Result 1714 states and 4518 transitions. [2022-03-01 15:47:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 15:47:13,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2022-03-01 15:47:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:47:13,290 INFO L225 Difference]: With dead ends: 1714 [2022-03-01 15:47:13,290 INFO L226 Difference]: Without dead ends: 1714 [2022-03-01 15:47:13,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-01 15:47:13,291 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 137 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:47:13,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 329 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:47:13,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-03-01 15:47:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 894. [2022-03-01 15:47:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 2.677491601343785) internal successors, (2391), 893 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:47:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 2391 transitions. [2022-03-01 15:47:13,329 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 2391 transitions. Word has length 72 [2022-03-01 15:47:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:47:13,330 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 2391 transitions. [2022-03-01 15:47:13,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:47:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 2391 transitions. [2022-03-01 15:47:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-01 15:47:13,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:47:13,332 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:47:13,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 15:47:13,333 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:47:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:47:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash 914260433, now seen corresponding path program 3 times [2022-03-01 15:47:13,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:47:13,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732349113] [2022-03-01 15:47:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:47:13,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:47:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:47:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:47:13,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:47:13,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732349113] [2022-03-01 15:47:13,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732349113] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:47:13,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:47:13,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 15:47:13,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684991017] [2022-03-01 15:47:13,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:47:13,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 15:47:13,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:47:13,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 15:47:13,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 15:47:13,432 INFO L87 Difference]: Start difference. First operand 894 states and 2391 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:47:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:47:13,562 INFO L93 Difference]: Finished difference Result 1322 states and 3564 transitions. [2022-03-01 15:47:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:47:13,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2022-03-01 15:47:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:47:13,569 INFO L225 Difference]: With dead ends: 1322 [2022-03-01 15:47:13,570 INFO L226 Difference]: Without dead ends: 1322 [2022-03-01 15:47:13,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:47:13,571 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 56 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:47:13,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 276 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:47:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-03-01 15:47:13,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 798. [2022-03-01 15:47:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 2.64366373902133) internal successors, (2107), 797 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:47:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2107 transitions. [2022-03-01 15:47:13,596 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2107 transitions. Word has length 72 [2022-03-01 15:47:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:47:13,596 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 2107 transitions. [2022-03-01 15:47:13,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:47:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2107 transitions. [2022-03-01 15:47:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 15:47:13,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:47:13,603 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:47:13,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 15:47:13,606 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:47:13,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:47:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash 955660810, now seen corresponding path program 2 times [2022-03-01 15:47:13,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:47:13,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824646769] [2022-03-01 15:47:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:47:13,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:47:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:47:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:47:14,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:47:14,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824646769] [2022-03-01 15:47:14,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824646769] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:47:14,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882775556] [2022-03-01 15:47:14,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:47:14,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:47:14,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:47:14,703 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) [2022-03-01 15:47:14,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 15:47:14,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:47:14,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:47:14,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-01 15:47:14,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:47:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:47:15,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:47:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:47:19,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882775556] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:47:19,025 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:47:19,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 20] total 44 [2022-03-01 15:47:19,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681975240] [2022-03-01 15:47:19,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:47:19,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-01 15:47:19,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:47:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-01 15:47:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:47:19,028 INFO L87 Difference]: Start difference. First operand 798 states and 2107 transitions. Second operand has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:48:10,958 INFO L93 Difference]: Finished difference Result 4529 states and 11574 transitions. [2022-03-01 15:48:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-03-01 15:48:10,959 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 15:48:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:48:10,980 INFO L225 Difference]: With dead ends: 4529 [2022-03-01 15:48:10,980 INFO L226 Difference]: Without dead ends: 4064 [2022-03-01 15:48:10,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8583 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=3920, Invalid=20572, Unknown=0, NotChecked=0, Total=24492 [2022-03-01 15:48:10,986 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2089 mSDsluCounter, 4708 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:48:10,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2089 Valid, 4514 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-03-01 15:48:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2022-03-01 15:48:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 1146. [2022-03-01 15:48:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.7606986899563317) internal successors, (3161), 1145 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 3161 transitions. [2022-03-01 15:48:11,048 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 3161 transitions. Word has length 74 [2022-03-01 15:48:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:48:11,049 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 3161 transitions. [2022-03-01 15:48:11,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 3161 transitions. [2022-03-01 15:48:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 15:48:11,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:48:11,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:48:11,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 15:48:11,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:48:11,257 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:48:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:48:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1329799292, now seen corresponding path program 3 times [2022-03-01 15:48:11,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:48:11,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170339247] [2022-03-01 15:48:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:48:11,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:48:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:48:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:11,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:48:11,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170339247] [2022-03-01 15:48:11,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170339247] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:48:11,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029372115] [2022-03-01 15:48:11,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:48:11,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:48:11,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:48:11,904 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) [2022-03-01 15:48:11,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 15:48:12,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 15:48:12,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:48:12,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-01 15:48:12,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:48:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:12,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:48:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:15,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029372115] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:48:15,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:48:15,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 35 [2022-03-01 15:48:15,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270089115] [2022-03-01 15:48:15,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:48:15,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 15:48:15,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:48:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 15:48:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 15:48:15,150 INFO L87 Difference]: Start difference. First operand 1146 states and 3161 transitions. Second operand has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:48:26,618 INFO L93 Difference]: Finished difference Result 3667 states and 9608 transitions. [2022-03-01 15:48:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 15:48:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 15:48:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:48:26,635 INFO L225 Difference]: With dead ends: 3667 [2022-03-01 15:48:26,635 INFO L226 Difference]: Without dead ends: 3037 [2022-03-01 15:48:26,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1330, Invalid=7042, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 15:48:26,638 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 1366 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:48:26,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 2721 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 15:48:26,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2022-03-01 15:48:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 1086. [2022-03-01 15:48:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 2.713364055299539) internal successors, (2944), 1085 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2944 transitions. [2022-03-01 15:48:26,684 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2944 transitions. Word has length 74 [2022-03-01 15:48:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:48:26,684 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2944 transitions. [2022-03-01 15:48:26,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2944 transitions. [2022-03-01 15:48:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 15:48:26,687 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:48:26,687 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:48:26,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 15:48:26,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:48:26,911 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:48:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:48:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2090126194, now seen corresponding path program 4 times [2022-03-01 15:48:26,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:48:26,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059105232] [2022-03-01 15:48:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:48:26,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:48:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:48:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:28,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:48:28,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059105232] [2022-03-01 15:48:28,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059105232] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:48:28,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023021914] [2022-03-01 15:48:28,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:48:28,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:48:28,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:48:28,323 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) [2022-03-01 15:48:28,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 15:48:28,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:48:28,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:48:28,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-01 15:48:28,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:48:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:29,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:48:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:33,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023021914] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:48:33,325 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:48:33,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 18] total 36 [2022-03-01 15:48:33,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463867611] [2022-03-01 15:48:33,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:48:33,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-01 15:48:33,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:48:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-01 15:48:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 15:48:33,327 INFO L87 Difference]: Start difference. First operand 1086 states and 2944 transitions. Second operand has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:48:51,063 INFO L93 Difference]: Finished difference Result 3390 states and 9035 transitions. [2022-03-01 15:48:51,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 15:48:51,063 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 15:48:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:48:51,076 INFO L225 Difference]: With dead ends: 3390 [2022-03-01 15:48:51,076 INFO L226 Difference]: Without dead ends: 2775 [2022-03-01 15:48:51,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2586 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=1260, Invalid=6930, Unknown=0, NotChecked=0, Total=8190 [2022-03-01 15:48:51,079 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 1174 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:48:51,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 2172 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1216 Invalid, 0 Unknown, 1 Unchecked, 5.4s Time] [2022-03-01 15:48:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-03-01 15:48:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 1226. [2022-03-01 15:48:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.746938775510204) internal successors, (3365), 1225 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 3365 transitions. [2022-03-01 15:48:51,120 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 3365 transitions. Word has length 74 [2022-03-01 15:48:51,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:48:51,121 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 3365 transitions. [2022-03-01 15:48:51,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:48:51,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 3365 transitions. [2022-03-01 15:48:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-01 15:48:51,124 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:48:51,124 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-03-01 15:48:51,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 15:48:51,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:48:51,329 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:48:51,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:48:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1335703416, now seen corresponding path program 4 times [2022-03-01 15:48:51,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:48:51,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260040252] [2022-03-01 15:48:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:48:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:48:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:48:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:51,736 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:48:51,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260040252] [2022-03-01 15:48:51,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260040252] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:48:51,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800216496] [2022-03-01 15:48:51,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:48:51,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:48:51,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:48:51,738 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) [2022-03-01 15:48:51,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 15:48:51,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:48:51,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:48:51,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-01 15:48:51,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:48:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:52,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:48:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:48:53,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800216496] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:48:53,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:48:53,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 18] total 41 [2022-03-01 15:48:53,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549889185] [2022-03-01 15:48:53,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:48:53,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 15:48:53,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:48:53,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 15:48:53,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:48:53,995 INFO L87 Difference]: Start difference. First operand 1226 states and 3365 transitions. Second operand has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:49:01,979 INFO L93 Difference]: Finished difference Result 4144 states and 11312 transitions. [2022-03-01 15:49:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-01 15:49:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 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 76 [2022-03-01 15:49:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:49:01,990 INFO L225 Difference]: With dead ends: 4144 [2022-03-01 15:49:01,990 INFO L226 Difference]: Without dead ends: 3655 [2022-03-01 15:49:01,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4797 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2787, Invalid=11975, Unknown=0, NotChecked=0, Total=14762 [2022-03-01 15:49:01,992 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1293 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:49:01,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 3335 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1716 Invalid, 0 Unknown, 123 Unchecked, 2.4s Time] [2022-03-01 15:49:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2022-03-01 15:49:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 1370. [2022-03-01 15:49:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 2.77063550036523) internal successors, (3793), 1369 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 3793 transitions. [2022-03-01 15:49:02,039 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 3793 transitions. Word has length 76 [2022-03-01 15:49:02,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:49:02,039 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 3793 transitions. [2022-03-01 15:49:02,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 3793 transitions. [2022-03-01 15:49:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:49:02,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:49:02,043 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:49:02,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 15:49:02,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:02,266 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:49:02,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:49:02,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1260039537, now seen corresponding path program 5 times [2022-03-01 15:49:02,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:49:02,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506702050] [2022-03-01 15:49:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:49:02,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:49:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:49:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:03,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:49:03,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506702050] [2022-03-01 15:49:03,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506702050] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:49:03,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364081580] [2022-03-01 15:49:03,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:49:03,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:49:03,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:49:03,565 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) [2022-03-01 15:49:03,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 15:49:03,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 15:49:03,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:49:03,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-01 15:49:03,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:49:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:05,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:49:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:49:12,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364081580] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:49:12,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:49:12,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 41 [2022-03-01 15:49:12,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984592869] [2022-03-01 15:49:12,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:49:12,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 15:49:12,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:49:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 15:49:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:49:12,547 INFO L87 Difference]: Start difference. First operand 1370 states and 3793 transitions. Second operand has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:49:42,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:50:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:50:18,880 INFO L93 Difference]: Finished difference Result 4813 states and 12652 transitions. [2022-03-01 15:50:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-01 15:50:18,880 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 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 [2022-03-01 15:50:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:50:18,888 INFO L225 Difference]: With dead ends: 4813 [2022-03-01 15:50:18,888 INFO L226 Difference]: Without dead ends: 3748 [2022-03-01 15:50:18,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6306 ImplicationChecksByTransitivity, 58.2s TimeCoverageRelationStatistics Valid=2647, Invalid=15984, Unknown=1, NotChecked=0, Total=18632 [2022-03-01 15:50:18,890 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 1662 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 2026 mSolverCounterSat, 185 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:50:18,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 3993 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2026 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-03-01 15:50:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-03-01 15:50:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 1702. [2022-03-01 15:50:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.802469135802469) internal successors, (4767), 1701 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4767 transitions. [2022-03-01 15:50:18,948 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4767 transitions. Word has length 77 [2022-03-01 15:50:18,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:50:18,948 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4767 transitions. [2022-03-01 15:50:18,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4767 transitions. [2022-03-01 15:50:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:50:18,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:50:18,953 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:50:18,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 15:50:19,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:19,177 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:50:19,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:50:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1044628751, now seen corresponding path program 6 times [2022-03-01 15:50:19,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:50:19,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434680064] [2022-03-01 15:50:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:50:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:50:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:50:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:21,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:50:21,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434680064] [2022-03-01 15:50:21,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434680064] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:50:21,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520528531] [2022-03-01 15:50:21,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:50:21,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:50:21,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:50:21,592 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) [2022-03-01 15:50:21,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 15:50:21,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 15:50:21,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:50:21,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-01 15:50:21,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:50:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:23,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:50:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:50:28,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520528531] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:50:28,234 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:50:28,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 19] total 44 [2022-03-01 15:50:28,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888735743] [2022-03-01 15:50:28,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:50:28,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-01 15:50:28,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:50:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-01 15:50:28,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1583, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:50:28,236 INFO L87 Difference]: Start difference. First operand 1702 states and 4767 transitions. Second operand has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:50:42,025 WARN L228 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 150 DAG size of output: 134 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 15:50:47,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:51:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:51:32,609 INFO L93 Difference]: Finished difference Result 5207 states and 13781 transitions. [2022-03-01 15:51:32,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-01 15:51:32,609 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 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 [2022-03-01 15:51:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:51:32,618 INFO L225 Difference]: With dead ends: 5207 [2022-03-01 15:51:32,619 INFO L226 Difference]: Without dead ends: 4031 [2022-03-01 15:51:32,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8322 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=3337, Invalid=21466, Unknown=3, NotChecked=0, Total=24806 [2022-03-01 15:51:32,622 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1912 mSDsluCounter, 5183 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 5024 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:51:32,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1912 Valid, 5024 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-03-01 15:51:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2022-03-01 15:51:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 2062. [2022-03-01 15:51:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 2.8107714701601165) internal successors, (5793), 2061 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 5793 transitions. [2022-03-01 15:51:32,684 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 5793 transitions. Word has length 77 [2022-03-01 15:51:32,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:51:32,684 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 5793 transitions. [2022-03-01 15:51:32,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:51:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 5793 transitions. [2022-03-01 15:51:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:51:32,691 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:51:32,691 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:51:32,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 15:51:32,911 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,SelfDestructingSolverStorable11 [2022-03-01 15:51:32,912 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:51:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:51:32,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1503926061, now seen corresponding path program 7 times [2022-03-01 15:51:32,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:51:32,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242701193] [2022-03-01 15:51:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:51:32,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:51:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:33,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:51:33,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242701193] [2022-03-01 15:51:33,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242701193] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:51:33,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557600734] [2022-03-01 15:51:33,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:51:33,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:51:33,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:51:33,764 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) [2022-03-01 15:51:33,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 15:51:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:51:33,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-01 15:51:33,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:51:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:36,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:51:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:51:41,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557600734] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:51:41,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:51:41,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 21] total 52 [2022-03-01 15:51:41,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193956548] [2022-03-01 15:51:41,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:51:41,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-01 15:51:41,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:51:41,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-01 15:51:41,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 15:51:41,219 INFO L87 Difference]: Start difference. First operand 2062 states and 5793 transitions. Second operand has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:53:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:53:40,802 INFO L93 Difference]: Finished difference Result 7274 states and 19572 transitions. [2022-03-01 15:53:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-03-01 15:53:40,803 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 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 [2022-03-01 15:53:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:53:40,820 INFO L225 Difference]: With dead ends: 7274 [2022-03-01 15:53:40,820 INFO L226 Difference]: Without dead ends: 6293 [2022-03-01 15:53:40,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20025 ImplicationChecksByTransitivity, 109.0s TimeCoverageRelationStatistics Valid=7006, Invalid=45206, Unknown=0, NotChecked=0, Total=52212 [2022-03-01 15:53:40,824 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 2370 mSDsluCounter, 5237 mSDsCounter, 0 mSdLazyCounter, 3399 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 3399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:53:40,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2370 Valid, 5187 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 3399 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-03-01 15:53:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6293 states. [2022-03-01 15:53:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6293 to 2422. [2022-03-01 15:53:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2421 states have (on average 2.87938868236266) internal successors, (6971), 2421 states have internal predecessors, (6971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:53:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 6971 transitions. [2022-03-01 15:53:40,931 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 6971 transitions. Word has length 77 [2022-03-01 15:53:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:53:40,931 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 6971 transitions. [2022-03-01 15:53:40,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:53:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 6971 transitions. [2022-03-01 15:53:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 15:53:40,938 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:53:40,938 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:53:40,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 15:53:41,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-01 15:53:41,143 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:53:41,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:53:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1514002547, now seen corresponding path program 8 times [2022-03-01 15:53:41,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:53:41,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595172055] [2022-03-01 15:53:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:53:41,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:53:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:53:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:44,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:53:44,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595172055] [2022-03-01 15:53:44,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595172055] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:53:44,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317282921] [2022-03-01 15:53:44,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:53:44,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:53:44,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:53:44,491 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) [2022-03-01 15:53:44,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 15:53:44,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:53:44,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:53:44,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-01 15:53:44,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:53:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:47,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:53:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:53:51,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317282921] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:53:51,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:53:51,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 40 [2022-03-01 15:53:51,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366921988] [2022-03-01 15:53:51,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:53:51,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-01 15:53:51,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:53:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-01 15:53:51,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1349, Unknown=1, NotChecked=0, Total=1560 [2022-03-01 15:53:51,412 INFO L87 Difference]: Start difference. First operand 2422 states and 6971 transitions. Second operand has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 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) [2022-03-01 15:54:06,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:54:19,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:54:23,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:55:11,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:55:31,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:56:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:56:18,608 INFO L93 Difference]: Finished difference Result 7641 states and 20347 transitions. [2022-03-01 15:56:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-03-01 15:56:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 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 77 [2022-03-01 15:56:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:56:18,622 INFO L225 Difference]: With dead ends: 7641 [2022-03-01 15:56:18,623 INFO L226 Difference]: Without dead ends: 6735 [2022-03-01 15:56:18,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16059 ImplicationChecksByTransitivity, 122.4s TimeCoverageRelationStatistics Valid=5819, Invalid=36821, Unknown=2, NotChecked=0, Total=42642 [2022-03-01 15:56:18,625 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 2026 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 301 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 5026 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:56:18,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2026 Valid, 5026 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 2848 Invalid, 4 Unknown, 0 Unchecked, 31.1s Time] [2022-03-01 15:56:18,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2022-03-01 15:56:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 2658. [2022-03-01 15:56:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2657 states have (on average 2.928114414753481) internal successors, (7780), 2657 states have internal predecessors, (7780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:56:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 7780 transitions. [2022-03-01 15:56:18,708 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 7780 transitions. Word has length 77 [2022-03-01 15:56:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:56:18,708 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 7780 transitions. [2022-03-01 15:56:18,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 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) [2022-03-01 15:56:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 7780 transitions. [2022-03-01 15:56:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 15:56:18,716 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:56:18,716 INFO L514 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, 1, 1, 1, 1, 1, 1] [2022-03-01 15:56:18,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 15:56:18,940 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,SelfDestructingSolverStorable13 [2022-03-01 15:56:18,941 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:56:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:56:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1799553041, now seen corresponding path program 9 times [2022-03-01 15:56:18,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:56:18,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055255694] [2022-03-01 15:56:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:56:18,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:56:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:56:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:19,612 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:56:19,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055255694] [2022-03-01 15:56:19,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055255694] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:56:19,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022975497] [2022-03-01 15:56:19,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:56:19,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:56:19,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:56:19,613 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) [2022-03-01 15:56:19,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 15:56:19,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:56:19,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:56:19,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-01 15:56:19,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:56:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:20,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:56:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:56:24,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022975497] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:56:24,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:56:24,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 18] total 41 [2022-03-01 15:56:24,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085438684] [2022-03-01 15:56:24,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:56:24,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 15:56:24,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:56:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 15:56:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 15:56:24,684 INFO L87 Difference]: Start difference. First operand 2658 states and 7780 transitions. Second operand has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:57:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:57:16,359 INFO L93 Difference]: Finished difference Result 8745 states and 23754 transitions. [2022-03-01 15:57:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-03-01 15:57:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 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 78 [2022-03-01 15:57:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:57:16,373 INFO L225 Difference]: With dead ends: 8745 [2022-03-01 15:57:16,373 INFO L226 Difference]: Without dead ends: 7383 [2022-03-01 15:57:16,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9638 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=2971, Invalid=23761, Unknown=0, NotChecked=0, Total=26732 [2022-03-01 15:57:16,375 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 2125 mSDsluCounter, 4605 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 4473 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:57:16,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2125 Valid, 4473 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-03-01 15:57:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7383 states. [2022-03-01 15:57:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7383 to 3138. [2022-03-01 15:57:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 2.9786420146636914) internal successors, (9344), 3137 states have internal predecessors, (9344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:57:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 9344 transitions. [2022-03-01 15:57:16,474 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 9344 transitions. Word has length 78 [2022-03-01 15:57:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:57:16,475 INFO L470 AbstractCegarLoop]: Abstraction has 3138 states and 9344 transitions. [2022-03-01 15:57:16,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:57:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 9344 transitions. [2022-03-01 15:57:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 15:57:16,482 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:57:16,482 INFO L514 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, 1, 1, 1, 1, 1, 1] [2022-03-01 15:57:16,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 15:57:16,695 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,SelfDestructingSolverStorable14 [2022-03-01 15:57:16,695 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:57:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:57:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1217995345, now seen corresponding path program 10 times [2022-03-01 15:57:16,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:57:16,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470204965] [2022-03-01 15:57:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:57:16,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:57:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:57:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:17,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:57:17,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470204965] [2022-03-01 15:57:17,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470204965] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:57:17,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798235654] [2022-03-01 15:57:17,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:57:17,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:57:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:57:17,803 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) [2022-03-01 15:57:17,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 15:57:17,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:57:17,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:57:17,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-01 15:57:17,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:57:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:19,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:57:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:57:24,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798235654] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:57:24,150 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:57:24,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 47 [2022-03-01 15:57:24,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081019382] [2022-03-01 15:57:24,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:57:24,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 15:57:24,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:57:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 15:57:24,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1838, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:57:24,157 INFO L87 Difference]: Start difference. First operand 3138 states and 9344 transitions. Second operand has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:57:58,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:58:06,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:58:11,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:58:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:38,448 INFO L93 Difference]: Finished difference Result 8965 states and 24710 transitions. [2022-03-01 15:58:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-03-01 15:58:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 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 78 [2022-03-01 15:58:38,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:38,465 INFO L225 Difference]: With dead ends: 8965 [2022-03-01 15:58:38,465 INFO L226 Difference]: Without dead ends: 7603 [2022-03-01 15:58:38,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10419 ImplicationChecksByTransitivity, 54.4s TimeCoverageRelationStatistics Valid=4054, Invalid=26048, Unknown=0, NotChecked=0, Total=30102 [2022-03-01 15:58:38,496 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 2057 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 282 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 4438 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:38,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2057 Valid, 4438 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2581 Invalid, 2 Unknown, 0 Unchecked, 24.0s Time] [2022-03-01 15:58:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7603 states. [2022-03-01 15:58:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7603 to 3630. [2022-03-01 15:58:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 3629 states have (on average 2.9950399559107193) internal successors, (10869), 3629 states have internal predecessors, (10869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 10869 transitions. [2022-03-01 15:58:38,611 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 10869 transitions. Word has length 78 [2022-03-01 15:58:38,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:38,611 INFO L470 AbstractCegarLoop]: Abstraction has 3630 states and 10869 transitions. [2022-03-01 15:58:38,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 10869 transitions. [2022-03-01 15:58:38,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 15:58:38,619 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:38,619 INFO L514 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, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:38,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 15:58:38,835 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,SelfDestructingSolverStorable15 [2022-03-01 15:58:38,835 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:38,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1762627179, now seen corresponding path program 11 times [2022-03-01 15:58:38,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:38,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298318171] [2022-03-01 15:58:38,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:38,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:39,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:39,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298318171] [2022-03-01 15:58:39,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298318171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:39,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91680121] [2022-03-01 15:58:39,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:58:39,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:39,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:39,109 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) [2022-03-01 15:58:39,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 15:58:39,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:58:39,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:39,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 15:58:39,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:39,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:58:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:40,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91680121] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:58:40,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:58:40,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 25 [2022-03-01 15:58:40,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802502973] [2022-03-01 15:58:40,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:58:40,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 15:58:40,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:58:40,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 15:58:40,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-03-01 15:58:40,206 INFO L87 Difference]: Start difference. First operand 3630 states and 10869 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 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) [2022-03-01 15:58:43,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:58:43,603 INFO L93 Difference]: Finished difference Result 8796 states and 24577 transitions. [2022-03-01 15:58:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-01 15:58:43,604 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 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 78 [2022-03-01 15:58:43,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:58:43,619 INFO L225 Difference]: With dead ends: 8796 [2022-03-01 15:58:43,620 INFO L226 Difference]: Without dead ends: 8796 [2022-03-01 15:58:43,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 135 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=968, Invalid=5838, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 15:58:43,620 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1287 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:58:43,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 2901 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:58:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2022-03-01 15:58:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 4382. [2022-03-01 15:58:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.0260214562885186) internal successors, (13257), 4381 states have internal predecessors, (13257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:58:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 13257 transitions. [2022-03-01 15:58:43,751 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 13257 transitions. Word has length 78 [2022-03-01 15:58:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:58:43,751 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 13257 transitions. [2022-03-01 15:58:43,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 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) [2022-03-01 15:58:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 13257 transitions. [2022-03-01 15:58:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 15:58:43,761 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:58:43,761 INFO L514 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, 1, 1, 1, 1, 1, 1] [2022-03-01 15:58:43,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 15:58:43,975 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,SelfDestructingSolverStorable16 [2022-03-01 15:58:43,976 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:58:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:58:43,976 INFO L85 PathProgramCache]: Analyzing trace with hash 63050411, now seen corresponding path program 12 times [2022-03-01 15:58:43,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:58:43,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090982250] [2022-03-01 15:58:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:58:43,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:58:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:58:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:46,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:58:46,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090982250] [2022-03-01 15:58:46,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090982250] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:58:46,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576923434] [2022-03-01 15:58:46,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:58:46,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:58:46,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:58:46,027 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) [2022-03-01 15:58:46,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 15:58:46,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 15:58:46,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:58:46,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-01 15:58:46,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:58:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:58:49,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:59:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:59:03,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576923434] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:59:03,965 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:59:03,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 22] total 55 [2022-03-01 15:59:03,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849587271] [2022-03-01 15:59:03,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:59:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-01 15:59:03,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:59:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-01 15:59:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2545, Unknown=1, NotChecked=0, Total=2970 [2022-03-01 15:59:03,966 INFO L87 Difference]: Start difference. First operand 4382 states and 13257 transitions. Second operand has 55 states, 55 states have (on average 3.418181818181818) internal successors, (188), 55 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:59:19,908 WARN L228 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 161 DAG size of output: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 15:59:23,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:59:25,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:59:40,257 WARN L228 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 149 DAG size of output: 142 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 15:59:52,909 WARN L228 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 170 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:00:07,962 WARN L228 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 185 DAG size of output: 159 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:00:27,092 WARN L228 SmtUtils]: Spent 14.30s on a formula simplification. DAG size of input: 192 DAG size of output: 166 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:00:46,089 WARN L228 SmtUtils]: Spent 15.69s on a formula simplification. DAG size of input: 181 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-03-01 16:00:51,351 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:00:51,351 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:00:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 16:00:51,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 107.4s TimeCoverageRelationStatistics Valid=869, Invalid=4981, Unknown=2, NotChecked=0, Total=5852 [2022-03-01 16:00:51,355 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 514 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:00:51,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1492 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-03-01 16:00:51,356 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 16:00:51,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 16:00:51,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:00:51,557 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4382states) and FLOYD_HOARE automaton (currently 29 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 77 known predicates. [2022-03-01 16:00:51,558 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 16:00:51,559 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 16:00:51,561 INFO L732 BasicCegarLoop]: Path program histogram: [12, 4, 1, 1] [2022-03-01 16:00:51,563 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 16:00:51,563 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 16:00:51,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 04:00:51 BasicIcfg [2022-03-01 16:00:51,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 16:00:51,565 INFO L158 Benchmark]: Toolchain (without parser) took 838284.52ms. Allocated memory was 184.5MB in the beginning and 382.7MB in the end (delta: 198.2MB). Free memory was 131.1MB in the beginning and 180.3MB in the end (delta: -49.2MB). Peak memory consumption was 149.3MB. Max. memory is 8.0GB. [2022-03-01 16:00:51,565 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:00:51,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.19ms. Allocated memory was 184.5MB in the beginning and 302.0MB in the end (delta: 117.4MB). Free memory was 130.9MB in the beginning and 273.2MB in the end (delta: -142.3MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-03-01 16:00:51,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.95ms. Allocated memory is still 302.0MB. Free memory was 273.2MB in the beginning and 271.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:00:51,566 INFO L158 Benchmark]: Boogie Preprocessor took 18.96ms. Allocated memory is still 302.0MB. Free memory was 271.7MB in the beginning and 270.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:00:51,566 INFO L158 Benchmark]: RCFGBuilder took 346.51ms. Allocated memory is still 302.0MB. Free memory was 270.1MB in the beginning and 256.5MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-01 16:00:51,566 INFO L158 Benchmark]: TraceAbstraction took 837640.60ms. Allocated memory was 302.0MB in the beginning and 382.7MB in the end (delta: 80.7MB). Free memory was 256.0MB in the beginning and 180.3MB in the end (delta: 75.6MB). Peak memory consumption was 157.4MB. Max. memory is 8.0GB. [2022-03-01 16:00:51,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.19ms. Allocated memory was 184.5MB in the beginning and 302.0MB in the end (delta: 117.4MB). Free memory was 130.9MB in the beginning and 273.2MB in the end (delta: -142.3MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.95ms. Allocated memory is still 302.0MB. Free memory was 273.2MB in the beginning and 271.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.96ms. Allocated memory is still 302.0MB. Free memory was 271.7MB in the beginning and 270.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 346.51ms. Allocated memory is still 302.0MB. Free memory was 270.1MB in the beginning and 256.5MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 837640.60ms. Allocated memory was 302.0MB in the beginning and 382.7MB in the end (delta: 80.7MB). Free memory was 256.0MB in the beginning and 180.3MB in the end (delta: 75.6MB). Peak memory consumption was 157.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4382states) and FLOYD_HOARE automaton (currently 29 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 77 known predicates. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (4382states) and FLOYD_HOARE automaton (currently 29 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 77 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (4382states) and FLOYD_HOARE automaton (currently 29 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 77 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 837.5s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.1s, AutomataDifference: 734.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 22169 SdHoareTripleChecker+Valid, 146.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22169 mSDsluCounter, 49522 SdHoareTripleChecker+Invalid, 139.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 295 IncrementalHoareTripleChecker+Unchecked, 50073 mSDsCounter, 2801 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26727 IncrementalHoareTripleChecker+Invalid, 29830 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2801 mSolverCounterUnsat, 2681 mSDtfsCounter, 26727 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3649 GetRequests, 1765 SyntacticMatches, 53 SemanticMatches, 1830 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 97476 ImplicationChecksByTransitivity, 639.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4382occurred in iteration=17, InterpolantAutomatonStates: 1511, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 36854 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 95.8s InterpolantComputationTime, 2386 NumberOfCodeBlocks, 2386 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 3397 ConstructedInterpolants, 28 QuantifiedInterpolants, 92647 SizeOfPredicates, 214 NumberOfNonLiveVariables, 2362 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 46 InterpolantComputations, 5 PerfectInterpolantSequences, 23/408 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown