/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:33:24,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:33:24,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:33:24,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:33:24,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:33:24,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:33:24,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:33:24,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:33:24,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:33:24,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:33:24,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:33:24,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:33:24,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:33:24,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:33:24,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:33:24,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:33:24,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:33:24,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:33:24,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:33:24,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:33:24,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:33:24,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:33:24,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:33:24,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:33:24,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:33:24,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:33:24,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:33:24,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:33:24,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:33:24,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:33:24,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:33:24,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:33:24,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:33:24,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:33:24,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:33:24,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:33:24,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:33:24,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:33:24,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:33:24,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:33:24,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:33:24,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:33:24,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:33:24,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:33:24,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:33:24,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:33:24,697 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:33:24,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:33:24,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:33:24,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:33:24,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:33:24,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:33:24,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:33:24,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:33:24,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:33:24,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:33:24,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:33:24,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:33:24,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:33:24,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:33:24,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:33:24,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:33:24,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:33:24,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:33:24,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:33:24,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:33:24,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:33:24,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:33:24,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:33:24,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:33:24,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:33:24,702 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:33:25,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:33:25,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:33:25,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:33:25,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:33:25,123 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:33:25,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-29 13:33:25,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffe481e1e/87c1d9de25374b1f88a47280c6f06dbc/FLAGeeced0aaa [2020-10-29 13:33:26,465 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:33:26,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-29 13:33:26,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffe481e1e/87c1d9de25374b1f88a47280c6f06dbc/FLAGeeced0aaa [2020-10-29 13:33:26,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffe481e1e/87c1d9de25374b1f88a47280c6f06dbc [2020-10-29 13:33:26,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:33:26,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:33:26,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:33:26,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:33:26,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:33:26,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:33:26" (1/1) ... [2020-10-29 13:33:26,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb5ebf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:26, skipping insertion in model container [2020-10-29 13:33:26,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:33:26" (1/1) ... [2020-10-29 13:33:26,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:33:27,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:33:30,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:33:30,756 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:33:33,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:33:33,387 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:33:33,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33 WrapperNode [2020-10-29 13:33:33,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:33:33,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:33:33,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:33:33,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:33:33,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (1/1) ... [2020-10-29 13:33:33,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (1/1) ... [2020-10-29 13:33:33,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (1/1) ... [2020-10-29 13:33:33,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (1/1) ... [2020-10-29 13:33:33,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (1/1) ... [2020-10-29 13:33:33,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (1/1) ... [2020-10-29 13:33:34,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (1/1) ... [2020-10-29 13:33:34,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:33:34,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:33:34,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:33:34,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:33:34,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-29 13:33:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:33:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:33:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:33:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:33:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:33:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:33:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:33:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:33:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:33:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:33:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:33:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:33:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:33:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:33:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:33:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:33:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:33:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:33:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:33:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:33:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:33:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-29 13:33:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-29 13:33:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:33:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:33:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:33:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:33:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:33:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:33:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:33:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:33:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:33:45,591 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:33:45,591 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:33:45,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:33:45 BoogieIcfgContainer [2020-10-29 13:33:45,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:33:45,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:33:45,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:33:45,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:33:45,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:33:26" (1/3) ... [2020-10-29 13:33:45,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c153c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:33:45, skipping insertion in model container [2020-10-29 13:33:45,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:33:33" (2/3) ... [2020-10-29 13:33:45,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c153c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:33:45, skipping insertion in model container [2020-10-29 13:33:45,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:33:45" (3/3) ... [2020-10-29 13:33:45,615 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-29 13:33:45,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:33:45,636 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:33:45,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:33:45,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:33:45,708 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:33:45,708 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:33:45,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:33:45,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:33:45,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:33:45,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:33:45,709 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:33:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states. [2020-10-29 13:33:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:33:45,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:45,853 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:45,854 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash 549039713, now seen corresponding path program 1 times [2020-10-29 13:33:45,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:45,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500461458] [2020-10-29 13:33:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:47,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:51,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:51,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:33:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 13:33:51,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:51,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:33:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:33:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:33:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:33:59,900 WARN L193 SmtUtils]: Spent 7.53 s on a formula simplification that was a NOOP. DAG size: 1291 [2020-10-29 13:33:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:00,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:00,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:00,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 13:34:00,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:00,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:00,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:34:00,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:34:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:34:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:00,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500461458] [2020-10-29 13:34:00,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:00,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:34:00,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377708697] [2020-10-29 13:34:00,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:34:00,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:00,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:34:00,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:34:00,416 INFO L87 Difference]: Start difference. First operand 3902 states. Second operand 6 states. [2020-10-29 13:34:07,394 WARN L193 SmtUtils]: Spent 6.71 s on a formula simplification that was a NOOP. DAG size: 1300 [2020-10-29 13:35:07,186 WARN L193 SmtUtils]: Spent 6.81 s on a formula simplification that was a NOOP. DAG size: 1298 [2020-10-29 13:35:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:35:08,932 INFO L93 Difference]: Finished difference Result 6641 states and 11897 transitions. [2020-10-29 13:35:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:35:08,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-29 13:35:08,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:35:08,982 INFO L225 Difference]: With dead ends: 6641 [2020-10-29 13:35:08,983 INFO L226 Difference]: Without dead ends: 3823 [2020-10-29 13:35:08,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:35:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2020-10-29 13:35:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3752. [2020-10-29 13:35:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3752 states. [2020-10-29 13:35:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 5142 transitions. [2020-10-29 13:35:09,275 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 5142 transitions. Word has length 122 [2020-10-29 13:35:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:35:09,278 INFO L481 AbstractCegarLoop]: Abstraction has 3752 states and 5142 transitions. [2020-10-29 13:35:09,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:35:09,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 5142 transitions. [2020-10-29 13:35:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 13:35:09,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:35:09,295 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:35:09,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:35:09,299 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:35:09,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:35:09,300 INFO L82 PathProgramCache]: Analyzing trace with hash -557118778, now seen corresponding path program 1 times [2020-10-29 13:35:09,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:35:09,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082090127] [2020-10-29 13:35:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:35:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:09,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:09,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:11,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:14,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 13:35:14,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:35:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 13:35:14,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:14,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:35:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:35:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 13:35:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:35:22,272 WARN L193 SmtUtils]: Spent 7.38 s on a formula simplification that was a NOOP. DAG size: 1291 [2020-10-29 13:35:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:35:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:22,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:22,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:35:22,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:35:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 13:35:22,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:22,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:35:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:35:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:35:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:35:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:35:22,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082090127] [2020-10-29 13:35:22,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:35:22,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:35:22,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308043536] [2020-10-29 13:35:22,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:35:22,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:35:22,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:35:22,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:35:22,752 INFO L87 Difference]: Start difference. First operand 3752 states and 5142 transitions. Second operand 6 states. [2020-10-29 13:35:30,230 WARN L193 SmtUtils]: Spent 7.29 s on a formula simplification that was a NOOP. DAG size: 1300 [2020-10-29 13:36:12,056 WARN L193 SmtUtils]: Spent 7.14 s on a formula simplification that was a NOOP. DAG size: 1298 [2020-10-29 13:36:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:36:13,762 INFO L93 Difference]: Finished difference Result 7894 states and 11235 transitions. [2020-10-29 13:36:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:36:13,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-29 13:36:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:36:13,789 INFO L225 Difference]: With dead ends: 7894 [2020-10-29 13:36:13,789 INFO L226 Difference]: Without dead ends: 4732 [2020-10-29 13:36:13,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:36:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2020-10-29 13:36:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4633. [2020-10-29 13:36:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4633 states. [2020-10-29 13:36:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4633 states to 4633 states and 6643 transitions. [2020-10-29 13:36:14,017 INFO L78 Accepts]: Start accepts. Automaton has 4633 states and 6643 transitions. Word has length 123 [2020-10-29 13:36:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:36:14,018 INFO L481 AbstractCegarLoop]: Abstraction has 4633 states and 6643 transitions. [2020-10-29 13:36:14,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:36:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4633 states and 6643 transitions. [2020-10-29 13:36:14,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 13:36:14,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:36:14,039 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:36:14,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:36:14,039 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:36:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:36:14,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2015838211, now seen corresponding path program 1 times [2020-10-29 13:36:14,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:36:14,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484978853] [2020-10-29 13:36:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:36:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:36:14,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:18,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:19,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:36:19,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 13:36:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:36:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-29 13:36:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:36:19,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:36:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:36:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:36:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 13:36:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:36:26,849 WARN L193 SmtUtils]: Spent 7.08 s on a formula simplification that was a NOOP. DAG size: 1291 [2020-10-29 13:36:26,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:36:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:36:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:27,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:36:27,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:36:27,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:36:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 13:36:27,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:36:27,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:36:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:36:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:36:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:36:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:36:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:36:27,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484978853] [2020-10-29 13:36:27,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:36:27,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:36:27,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885562680] [2020-10-29 13:36:27,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:36:27,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:36:27,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:36:27,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:36:27,238 INFO L87 Difference]: Start difference. First operand 4633 states and 6643 transitions. Second operand 6 states. [2020-10-29 13:36:34,585 WARN L193 SmtUtils]: Spent 7.11 s on a formula simplification that was a NOOP. DAG size: 1300