/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.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:34:52,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:34:52,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:34:52,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:34:52,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:34:52,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:34:52,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:34:52,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:34:52,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:34:52,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:34:52,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:34:52,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:34:52,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:34:52,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:34:52,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:34:52,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:34:52,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:34:52,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:34:52,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:34:52,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:34:52,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:34:52,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:34:52,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:34:52,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:34:52,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:34:52,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:34:52,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:34:52,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:34:52,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:34:52,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:34:52,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:34:52,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:34:52,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:34:52,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:34:52,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:34:52,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:34:52,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:34:52,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:34:52,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:34:52,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:34:52,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:34:52,718 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 13:34:52,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:34:52,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:34:52,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:34:52,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:34:52,786 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:34:52,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:34:52,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:34:52,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:34:52,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:34:52,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:34:52,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:34:52,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:34:52,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:34:52,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:34:52,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:34:52,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:34:52,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:34:52,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:34:52,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:34:52,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:34:52,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:34:52,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:34:52,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:34:52,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:34:52,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:34:52,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:34:52,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:34:52,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:34:52,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:34:52,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:34:53,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:34:53,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:34:53,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:34:53,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:34:53,245 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:34:53,246 INFO L432 ainManager$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.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:34:53,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010b43858/6799c821d5f040939c99cdbf8dedc63a/FLAG14865ff4f [2020-10-29 13:34:54,438 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:34:54,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:34:54,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010b43858/6799c821d5f040939c99cdbf8dedc63a/FLAG14865ff4f [2020-10-29 13:34:54,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/010b43858/6799c821d5f040939c99cdbf8dedc63a [2020-10-29 13:34:54,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:34:54,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:34:54,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:34:54,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:34:54,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:34:54,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:34:54" (1/1) ... [2020-10-29 13:34:54,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fafae32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:34:54, skipping insertion in model container [2020-10-29 13:34:54,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:34:54" (1/1) ... [2020-10-29 13:34:54,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:34:55,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:34:58,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:34:58,895 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:35:01,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:35:01,290 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:35:01,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01 WrapperNode [2020-10-29 13:35:01,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:35:01,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:35:01,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:35:01,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:35:01,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (1/1) ... [2020-10-29 13:35:01,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (1/1) ... [2020-10-29 13:35:01,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (1/1) ... [2020-10-29 13:35:01,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (1/1) ... [2020-10-29 13:35:01,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (1/1) ... [2020-10-29 13:35:01,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (1/1) ... [2020-10-29 13:35:01,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (1/1) ... [2020-10-29 13:35:01,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:35:01,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:35:01,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:35:01,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:35:01,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (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 13:35:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:35:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:35:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:35:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:35:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:35:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:35:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:35:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:35:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:35:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:35:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:35:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:35:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:35:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:35:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:35:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:35:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:35:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:35:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:35:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:35:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:35:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:35:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-29 13:35:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-29 13:35:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:35:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:35:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:35:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:35:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:35:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:35:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:35:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:35:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:35:15,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:35:15,353 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:35:15,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:35:15 BoogieIcfgContainer [2020-10-29 13:35:15,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:35:15,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:35:15,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:35:15,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:35:15,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:34:54" (1/3) ... [2020-10-29 13:35:15,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321b8b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:35:15, skipping insertion in model container [2020-10-29 13:35:15,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:35:01" (2/3) ... [2020-10-29 13:35:15,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321b8b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:35:15, skipping insertion in model container [2020-10-29 13:35:15,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:35:15" (3/3) ... [2020-10-29 13:35:15,372 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:35:15,384 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:35:15,391 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:35:15,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:35:15,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:35:15,449 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:35:15,450 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:35:15,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:35:15,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:35:15,450 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:35:15,450 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:35:15,450 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:35:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states. [2020-10-29 13:35:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:35:15,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:35:15,593 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] [2020-10-29 13:35:15,593 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:35:15,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:35:15,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1880246902, now seen corresponding path program 1 times [2020-10-29 13:35:15,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:35:15,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367273600] [2020-10-29 13:35:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:35:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:17,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:19,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:21,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:21,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:35:21,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:35:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-29 13:35:21,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:21,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:35:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:35:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 13:35:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:35:31,383 WARN L193 SmtUtils]: Spent 9.35 s on a formula simplification that was a NOOP. DAG size: 1267 [2020-10-29 13:35:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:35:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:31,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:31,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:31,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:35:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:35:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 13:35:31,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:31,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:35:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:35:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:35:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:35:31,919 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 13:35:31,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367273600] [2020-10-29 13:35:31,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:35:31,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:35:31,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126705814] [2020-10-29 13:35:31,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:35:31,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:35:31,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:35:31,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:35:31,944 INFO L87 Difference]: Start difference. First operand 3863 states. Second operand 6 states. [2020-10-29 13:35:41,248 WARN L193 SmtUtils]: Spent 9.08 s on a formula simplification that was a NOOP. DAG size: 1276 [2020-10-29 13:36:39,751 WARN L193 SmtUtils]: Spent 9.06 s on a formula simplification that was a NOOP. DAG size: 1274 [2020-10-29 13:36:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:36:41,457 INFO L93 Difference]: Finished difference Result 6523 states and 11754 transitions. [2020-10-29 13:36:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:36:41,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-29 13:36:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:36:41,507 INFO L225 Difference]: With dead ends: 6523 [2020-10-29 13:36:41,507 INFO L226 Difference]: Without dead ends: 3761 [2020-10-29 13:36:41,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:36:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2020-10-29 13:36:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3662. [2020-10-29 13:36:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3662 states. [2020-10-29 13:36:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5027 transitions. [2020-10-29 13:36:41,772 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5027 transitions. Word has length 121 [2020-10-29 13:36:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:36:41,773 INFO L481 AbstractCegarLoop]: Abstraction has 3662 states and 5027 transitions. [2020-10-29 13:36:41,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:36:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5027 transitions. [2020-10-29 13:36:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:36:41,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:36:41,786 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 13:36:41,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:36:41,787 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:36:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:36:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash 458576664, now seen corresponding path program 1 times [2020-10-29 13:36:41,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:36:41,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056324881] [2020-10-29 13:36:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:36:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:36:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:46,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:36:46,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:36:46,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:36:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 13:36:46,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:36:46,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:36:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:36:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:36:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:36:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:36:56,500 WARN L193 SmtUtils]: Spent 9.17 s on a formula simplification that was a NOOP. DAG size: 1267 [2020-10-29 13:36:56,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:36:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:36:56,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:56,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:36:56,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:36:56,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:36:56,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 13:36:56,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:36:56,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:36:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:36:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:36:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:36:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:36:56,834 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 13:36:56,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056324881] [2020-10-29 13:36:56,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:36:56,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:36:56,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382671478] [2020-10-29 13:36:56,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:36:56,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:36:56,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:36:56,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:36:56,838 INFO L87 Difference]: Start difference. First operand 3662 states and 5027 transitions. Second operand 6 states. [2020-10-29 13:37:06,163 WARN L193 SmtUtils]: Spent 9.13 s on a formula simplification that was a NOOP. DAG size: 1275 [2020-10-29 13:37:45,987 WARN L193 SmtUtils]: Spent 9.12 s on a formula simplification that was a NOOP. DAG size: 1273 [2020-10-29 13:37:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:37:47,386 INFO L93 Difference]: Finished difference Result 7641 states and 10920 transitions. [2020-10-29 13:37:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:37:47,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-29 13:37:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:37:47,412 INFO L225 Difference]: With dead ends: 7641 [2020-10-29 13:37:47,412 INFO L226 Difference]: Without dead ends: 4580 [2020-10-29 13:37:47,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:37:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2020-10-29 13:37:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 4481. [2020-10-29 13:37:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4481 states. [2020-10-29 13:37:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 6454 transitions. [2020-10-29 13:37:47,633 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 6454 transitions. Word has length 122 [2020-10-29 13:37:47,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:37:47,633 INFO L481 AbstractCegarLoop]: Abstraction has 4481 states and 6454 transitions. [2020-10-29 13:37:47,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:37:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 6454 transitions. [2020-10-29 13:37:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 13:37:47,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:37:47,646 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 13:37:47,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:37:47,647 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:37:47,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:37:47,647 INFO L82 PathProgramCache]: Analyzing trace with hash 539629752, now seen corresponding path program 1 times [2020-10-29 13:37:47,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:37:47,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887436156] [2020-10-29 13:37:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:37:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:37:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:37:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:37:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:37:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:37:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:37:49,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:37:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:37:52,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:37:52,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:37:52,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 13:37:52,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:37:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:37:52,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:37:52,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:37:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:37:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:37:52,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 13:37:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:38:02,025 WARN L193 SmtUtils]: Spent 8.99 s on a formula simplification that was a NOOP. DAG size: 1267 [2020-10-29 13:38:02,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:38:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:38:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:38:02,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:38:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:38:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:38:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 13:38:02,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:38:02,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:38:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:38:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:38:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:38:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:38:02,342 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 13:38:02,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887436156] [2020-10-29 13:38:02,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:38:02,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:38:02,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115594930] [2020-10-29 13:38:02,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:38:02,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:38:02,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:38:02,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:38:02,346 INFO L87 Difference]: Start difference. First operand 4481 states and 6454 transitions. Second operand 6 states. [2020-10-29 13:38:11,697 WARN L193 SmtUtils]: Spent 9.17 s on a formula simplification that was a NOOP. DAG size: 1273