/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:48:51,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:48:51,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:48:51,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:48:51,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:48:51,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:48:51,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:48:51,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:48:51,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:48:51,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:48:51,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:48:51,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:48:51,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:48:51,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:48:51,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:48:51,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:48:51,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:48:51,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:48:51,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:48:51,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:48:51,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:48:51,761 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:48:51,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:48:51,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:48:51,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:48:51,763 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:48:51,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:48:51,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:48:51,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:48:51,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:48:51,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:48:51,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:48:51,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:48:51,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:48:51,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:48:51,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:48:51,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:48:51,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:48:51,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:48:51,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:48:51,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:48:51,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:48:51,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:48:51,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:48:51,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:48:51,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:48:51,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:48:51,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:48:51,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:48:51,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:48:52,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:48:52,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:48:52,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:48:52,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:48:52,239 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:48:52,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2021-02-21 15:48:52,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68a69ad1/124411aceb164af9a6d2a4dc35a47705/FLAG544824cc0 [2021-02-21 15:48:52,940 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:48:52,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2021-02-21 15:48:52,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68a69ad1/124411aceb164af9a6d2a4dc35a47705/FLAG544824cc0 [2021-02-21 15:48:53,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68a69ad1/124411aceb164af9a6d2a4dc35a47705 [2021-02-21 15:48:53,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:48:53,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:48:53,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:48:53,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:48:53,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:48:53,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fff5c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53, skipping insertion in model container [2021-02-21 15:48:53,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:48:53,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:48:53,513 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c[718,731] [2021-02-21 15:48:53,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:48:53,525 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:48:53,540 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c[718,731] [2021-02-21 15:48:53,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:48:53,556 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:48:53,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53 WrapperNode [2021-02-21 15:48:53,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:48:53,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:48:53,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:48:53,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:48:53,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (1/1) ... [2021-02-21 15:48:53,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:48:53,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:48:53,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:48:53,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:48:53,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:48:53,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:48:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:48:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:48:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2021-02-21 15:48:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:48:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:48:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:48:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:48:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:48:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 15:48:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure A [2021-02-21 15:48:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:48:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:48:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:48:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:48:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:48:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:48:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:48:53,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:48:53,908 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 15:48:53,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:53 BoogieIcfgContainer [2021-02-21 15:48:53,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:48:53,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:48:53,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:48:53,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:48:53,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:48:53" (1/3) ... [2021-02-21 15:48:53,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ca17fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:53, skipping insertion in model container [2021-02-21 15:48:53,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:53" (2/3) ... [2021-02-21 15:48:53,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ca17fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:53, skipping insertion in model container [2021-02-21 15:48:53,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:53" (3/3) ... [2021-02-21 15:48:53,918 INFO L111 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1.c [2021-02-21 15:48:53,925 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:48:53,929 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:48:53,947 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:48:54,011 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:48:54,011 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:48:54,011 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:48:54,012 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:48:54,012 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:48:54,015 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:48:54,015 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:48:54,015 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:48:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-02-21 15:48:54,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 15:48:54,065 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:54,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:48:54,066 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:54,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2102697119, now seen corresponding path program 1 times [2021-02-21 15:48:54,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:54,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574633383] [2021-02-21 15:48:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:54,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:54,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:48:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:54,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:48:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:54,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-21 15:48:54,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574633383] [2021-02-21 15:48:54,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728751461] [2021-02-21 15:48:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 15:48:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:54,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-21 15:48:54,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 15:48:54,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:54,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 15:48:54,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 15:48:54,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 15:48:54,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:54,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:54,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:54,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-21 15:48:54,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 15:48:54,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2021-02-21 15:48:54,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468404096] [2021-02-21 15:48:54,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 15:48:54,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 15:48:54,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:48:54,778 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 7 states. [2021-02-21 15:48:55,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:55,026 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-02-21 15:48:55,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 15:48:55,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-02-21 15:48:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:55,037 INFO L225 Difference]: With dead ends: 45 [2021-02-21 15:48:55,037 INFO L226 Difference]: Without dead ends: 21 [2021-02-21 15:48:55,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-02-21 15:48:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-02-21 15:48:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-02-21 15:48:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-02-21 15:48:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-02-21 15:48:55,100 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2021-02-21 15:48:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:55,100 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-02-21 15:48:55,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 15:48:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-02-21 15:48:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-21 15:48:55,103 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:55,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:48:55,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-02-21 15:48:55,318 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:55,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:55,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1985317331, now seen corresponding path program 1 times [2021-02-21 15:48:55,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:55,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552541872] [2021-02-21 15:48:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:48:55,355 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:48:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:48:55,387 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:48:55,416 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:48:55,416 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:48:55,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:48:55,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:48:55 BoogieIcfgContainer [2021-02-21 15:48:55,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:48:55,471 INFO L168 Benchmark]: Toolchain (without parser) took 2142.41 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 125.6 MB in the beginning and 166.8 MB in the end (delta: -41.2 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:55,471 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:48:55,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.36 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 115.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:55,472 INFO L168 Benchmark]: Boogie Preprocessor took 30.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 114.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:55,473 INFO L168 Benchmark]: RCFGBuilder took 320.21 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 101.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:55,474 INFO L168 Benchmark]: TraceAbstraction took 1557.75 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 100.7 MB in the beginning and 166.8 MB in the end (delta: -66.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:48:55,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 216.36 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 115.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 114.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 320.21 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 101.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1557.75 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 100.7 MB in the beginning and 166.8 MB in the end (delta: -66.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int g; VAL [\old(g)=52, g=0] [L28] int g = __VERIFIER_nondet_int(); [L29] int h = !g; VAL [\old(g)=0, g=-1, g=0, h=0] [L30] CALL A(g,h) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=0, g=0] [L19] COND TRUE \read(a1) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=0, a1=-1, a2=0, g=0] [L20] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=-1, \old(g)=0, g=0] [L19] COND FALSE !(\read(a1)) [L22] g = a2 VAL [\old(a1)=0, \old(a2)=-1, \old(g)=0, a1=0, a2=-1, g=-1] [L20] RET A(a2,a1) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=0, A(a2,a1)=-2, a1=-1, a2=0, g=-1] [L30] RET A(g,h) VAL [\old(g)=0, A(g,h)=-3, g=-1, g=-1, h=0] [L31] CALL A(g,h) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=-1, g=-1] [L19] COND TRUE \read(a1) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=-1, a1=-1, a2=0, g=-1] [L20] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=-1, \old(g)=-1, g=-1] [L19] COND FALSE !(\read(a1)) [L22] g = a2 VAL [\old(a1)=0, \old(a2)=-1, \old(g)=-1, a1=0, a2=-1, g=-1] [L20] RET A(a2,a1) VAL [\old(a1)=-1, \old(a2)=0, \old(g)=-1, A(a2,a1)=-4, a1=-1, a2=0, g=-1] [L31] RET A(g,h) VAL [\old(g)=0, A(g,h)=-5, g=-1, g=-1, h=0] [L32] COND TRUE \read(g) VAL [\old(g)=0, g=-1, g=-1, h=0] [L33] reach_error() VAL [\old(g)=0, g=-1, g=-1, h=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 10 SDslu, 52 SDs, 0 SdLazy, 66 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 SizeOfPredicates, 1 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 2 InterpolantComputations, 0 PerfectInterpolantSequences, 2/8 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 proved your program to be incorrect! Received shutdown request...