/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:27:58,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:27:58,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:27:58,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:27:58,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:27:58,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:27:58,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:27:58,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:27:58,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:27:58,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:27:58,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:27:58,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:27:58,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:27:58,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:27:58,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:27:58,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:27:58,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:27:58,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:27:58,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:27:58,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:27:58,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:27:58,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:27:58,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:27:58,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:27:58,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:27:58,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:27:58,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:27:58,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:27:58,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:27:58,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:27:58,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:27:58,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:27:58,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:27:58,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:27:58,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:27:58,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:27:58,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:27:58,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:27:58,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:27:58,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:27:58,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:27:58,775 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 [2020-09-25 13:27:58,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:27:58,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:27:58,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:27:58,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:27:58,809 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:27:58,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:27:58,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:27:58,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:27:58,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:27:58,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:27:58,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:27:58,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:27:58,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:27:58,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:27:58,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:27:58,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:27:58,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:27:58,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:27:58,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:27:58,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:27:58,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:27:58,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:27:58,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:27:58,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:27:58,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:27:58,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:27:58,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:27:58,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:27:58,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:27:58,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=true; [2020-09-25 13:27:59,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:27:59,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:27:59,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:27:59,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:27:59,308 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:27:59,311 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 13:27:59,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cf01e081/25d54f0e626440eaafd5a30f7e4dca53/FLAG91d9b14f3 [2020-09-25 13:28:00,022 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:00,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 13:28:00,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cf01e081/25d54f0e626440eaafd5a30f7e4dca53/FLAG91d9b14f3 [2020-09-25 13:28:00,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cf01e081/25d54f0e626440eaafd5a30f7e4dca53 [2020-09-25 13:28:00,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:00,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:00,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:00,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:00,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:00,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:00" (1/1) ... [2020-09-25 13:28:00,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff28928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:00, skipping insertion in model container [2020-09-25 13:28:00,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:00" (1/1) ... [2020-09-25 13:28:00,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:00,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:00,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:01,007 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:01,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:01,130 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:01,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01 WrapperNode [2020-09-25 13:28:01,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:01,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:01,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:01,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:01,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (1/1) ... [2020-09-25 13:28:01,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (1/1) ... [2020-09-25 13:28:01,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (1/1) ... [2020-09-25 13:28:01,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (1/1) ... [2020-09-25 13:28:01,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (1/1) ... [2020-09-25 13:28:01,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (1/1) ... [2020-09-25 13:28:01,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (1/1) ... [2020-09-25 13:28:01,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:01,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:01,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:01,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:01,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (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 [2020-09-25 13:28:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:02,092 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:02,092 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 13:28:02,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:02 BoogieIcfgContainer [2020-09-25 13:28:02,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:02,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:02,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:02,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:02,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:00" (1/3) ... [2020-09-25 13:28:02,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43739a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:02, skipping insertion in model container [2020-09-25 13:28:02,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:01" (2/3) ... [2020-09-25 13:28:02,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43739a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:02, skipping insertion in model container [2020-09-25 13:28:02,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:02" (3/3) ... [2020-09-25 13:28:02,109 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-25 13:28:02,122 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:02,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 13:28:02,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 13:28:02,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:02,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:02,193 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:02,193 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:02,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:02,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:02,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:02,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-25 13:28:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 13:28:02,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:02,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:02,234 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-25 13:28:02,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:02,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524632605] [2020-09-25 13:28:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:02,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:02,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:02,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:28:02,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 13:28:02,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:02,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:02,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:02,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:28:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:28:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:02,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:28:02,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:02,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:28:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:02,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524632605] [2020-09-25 13:28:02,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:02,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:02,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309356096] [2020-09-25 13:28:02,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:02,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:02,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:02,982 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 6 states. [2020-09-25 13:28:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:03,519 INFO L93 Difference]: Finished difference Result 390 states and 486 transitions. [2020-09-25 13:28:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:28:03,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-25 13:28:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:03,538 INFO L225 Difference]: With dead ends: 390 [2020-09-25 13:28:03,538 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 13:28:03,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:28:03,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 13:28:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 142. [2020-09-25 13:28:03,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-25 13:28:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-09-25 13:28:03,609 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 18 [2020-09-25 13:28:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:03,609 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-09-25 13:28:03,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-09-25 13:28:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 13:28:03,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:03,612 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] [2020-09-25 13:28:03,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:03,613 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:03,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1753263237, now seen corresponding path program 1 times [2020-09-25 13:28:03,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:03,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653364218] [2020-09-25 13:28:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:03,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:06,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 13:28:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:28:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2902 [2020-09-25 13:28:06,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:06,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:28:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:28:06,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:06,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:06,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:06,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:06,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:06,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:06,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:28:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:06,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653364218] [2020-09-25 13:28:06,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:06,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:06,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22080799] [2020-09-25 13:28:06,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:06,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:06,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:06,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:06,710 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 7 states. [2020-09-25 13:28:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:07,329 INFO L93 Difference]: Finished difference Result 309 states and 335 transitions. [2020-09-25 13:28:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:07,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 13:28:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:07,333 INFO L225 Difference]: With dead ends: 309 [2020-09-25 13:28:07,333 INFO L226 Difference]: Without dead ends: 224 [2020-09-25 13:28:07,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:28:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-25 13:28:07,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2020-09-25 13:28:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 13:28:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2020-09-25 13:28:07,351 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 43 [2020-09-25 13:28:07,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:07,352 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2020-09-25 13:28:07,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2020-09-25 13:28:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:28:07,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:07,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:07,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:07,356 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:07,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1161635121, now seen corresponding path program 1 times [2020-09-25 13:28:07,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:07,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527219290] [2020-09-25 13:28:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:11,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:28:11,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:28:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4355 [2020-09-25 13:28:11,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:11,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:28:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:11,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:11,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:11,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:11,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:11,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:11,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527219290] [2020-09-25 13:28:11,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:11,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:28:11,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639206709] [2020-09-25 13:28:11,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:28:11,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:11,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:28:11,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:28:11,864 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand 8 states. [2020-09-25 13:28:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:12,303 INFO L93 Difference]: Finished difference Result 282 states and 303 transitions. [2020-09-25 13:28:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:12,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-09-25 13:28:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:12,308 INFO L225 Difference]: With dead ends: 282 [2020-09-25 13:28:12,309 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 13:28:12,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 13:28:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 164. [2020-09-25 13:28:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 13:28:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2020-09-25 13:28:12,337 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 56 [2020-09-25 13:28:12,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:12,338 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2020-09-25 13:28:12,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:28:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2020-09-25 13:28:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 13:28:12,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:12,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:12,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:12,345 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:12,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:12,346 INFO L82 PathProgramCache]: Analyzing trace with hash -65716681, now seen corresponding path program 1 times [2020-09-25 13:28:12,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:12,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267209206] [2020-09-25 13:28:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:13,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 13:28:13,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-09-25 13:28:13,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:13,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:28:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:28:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:13,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:13,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:13,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:28:13,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:13,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:13,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:13,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267209206] [2020-09-25 13:28:13,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:13,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:13,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351652748] [2020-09-25 13:28:13,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:13,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:13,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:13,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:13,216 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand 7 states. [2020-09-25 13:28:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:13,618 INFO L93 Difference]: Finished difference Result 294 states and 316 transitions. [2020-09-25 13:28:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:28:13,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-25 13:28:13,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:13,621 INFO L225 Difference]: With dead ends: 294 [2020-09-25 13:28:13,623 INFO L226 Difference]: Without dead ends: 179 [2020-09-25 13:28:13,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:28:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-25 13:28:13,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 161. [2020-09-25 13:28:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-25 13:28:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 172 transitions. [2020-09-25 13:28:13,646 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 172 transitions. Word has length 59 [2020-09-25 13:28:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:13,646 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 172 transitions. [2020-09-25 13:28:13,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 172 transitions. [2020-09-25 13:28:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 13:28:13,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:13,652 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] [2020-09-25 13:28:13,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:13,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:13,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:13,653 INFO L82 PathProgramCache]: Analyzing trace with hash 964312838, now seen corresponding path program 1 times [2020-09-25 13:28:13,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:13,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459186640] [2020-09-25 13:28:13,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:13,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:18,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 13:28:18,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4554 [2020-09-25 13:28:18,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:18,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:28:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:28:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:18,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:18,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:18,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:18,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:18,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:18,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:18,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459186640] [2020-09-25 13:28:18,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:18,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:18,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583068511] [2020-09-25 13:28:18,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:18,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:18,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:18,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:18,518 INFO L87 Difference]: Start difference. First operand 161 states and 172 transitions. Second operand 7 states. [2020-09-25 13:28:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:19,186 INFO L93 Difference]: Finished difference Result 314 states and 334 transitions. [2020-09-25 13:28:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:28:19,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-25 13:28:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:19,190 INFO L225 Difference]: With dead ends: 314 [2020-09-25 13:28:19,190 INFO L226 Difference]: Without dead ends: 270 [2020-09-25 13:28:19,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-09-25 13:28:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 163. [2020-09-25 13:28:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 13:28:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2020-09-25 13:28:19,210 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 59 [2020-09-25 13:28:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:19,213 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2020-09-25 13:28:19,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2020-09-25 13:28:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 13:28:19,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:19,219 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] [2020-09-25 13:28:19,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:28:19,220 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:19,220 INFO L82 PathProgramCache]: Analyzing trace with hash -70417469, now seen corresponding path program 1 times [2020-09-25 13:28:19,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:19,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344351771] [2020-09-25 13:28:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:20,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:28:20,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-09-25 13:28:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:20,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:28:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:28:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:20,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:20,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:20,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:28:20,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:20,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:20,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344351771] [2020-09-25 13:28:20,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:20,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 13:28:20,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847750961] [2020-09-25 13:28:20,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:28:20,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:20,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:28:20,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:20,756 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand 13 states. [2020-09-25 13:28:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:21,835 INFO L93 Difference]: Finished difference Result 289 states and 305 transitions. [2020-09-25 13:28:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:28:21,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-09-25 13:28:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:21,839 INFO L225 Difference]: With dead ends: 289 [2020-09-25 13:28:21,839 INFO L226 Difference]: Without dead ends: 286 [2020-09-25 13:28:21,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:28:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-25 13:28:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 198. [2020-09-25 13:28:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 13:28:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 211 transitions. [2020-09-25 13:28:21,856 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 211 transitions. Word has length 61 [2020-09-25 13:28:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:21,859 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 211 transitions. [2020-09-25 13:28:21,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:28:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 211 transitions. [2020-09-25 13:28:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 13:28:21,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:21,861 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] [2020-09-25 13:28:21,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:28:21,862 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:21,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2033546672, now seen corresponding path program 1 times [2020-09-25 13:28:21,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:21,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955442602] [2020-09-25 13:28:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:22,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:24,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:24,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 13:28:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2183 [2020-09-25 13:28:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:24,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:28:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 13:28:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:24,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:24,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:24,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:24,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:24,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:24,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:24,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:24,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955442602] [2020-09-25 13:28:24,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:24,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 13:28:24,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560431318] [2020-09-25 13:28:24,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:28:24,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:24,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:28:24,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:28:24,526 INFO L87 Difference]: Start difference. First operand 198 states and 211 transitions. Second operand 14 states. [2020-09-25 13:28:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:25,532 INFO L93 Difference]: Finished difference Result 287 states and 303 transitions. [2020-09-25 13:28:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:28:25,532 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-09-25 13:28:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:25,534 INFO L225 Difference]: With dead ends: 287 [2020-09-25 13:28:25,534 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 13:28:25,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:28:25,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 13:28:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 198. [2020-09-25 13:28:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 13:28:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2020-09-25 13:28:25,546 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 62 [2020-09-25 13:28:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:25,546 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2020-09-25 13:28:25,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:28:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2020-09-25 13:28:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 13:28:25,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:25,548 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] [2020-09-25 13:28:25,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:28:25,548 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:25,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1053070700, now seen corresponding path program 1 times [2020-09-25 13:28:25,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:25,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752701292] [2020-09-25 13:28:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:27,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:28:27,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:27,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1940 [2020-09-25 13:28:27,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:27,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:28:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:28:27,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:27,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:27,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:27,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:28:27,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:27,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:27,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:27,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752701292] [2020-09-25 13:28:27,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:27,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 13:28:27,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591157325] [2020-09-25 13:28:27,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:28:27,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:27,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:28:27,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:28:27,863 INFO L87 Difference]: Start difference. First operand 198 states and 210 transitions. Second operand 14 states. [2020-09-25 13:28:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:28,426 INFO L93 Difference]: Finished difference Result 363 states and 388 transitions. [2020-09-25 13:28:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:28:28,426 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-09-25 13:28:28,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:28,427 INFO L225 Difference]: With dead ends: 363 [2020-09-25 13:28:28,427 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 13:28:28,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:28:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 13:28:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 169. [2020-09-25 13:28:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-25 13:28:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 180 transitions. [2020-09-25 13:28:28,436 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 180 transitions. Word has length 63 [2020-09-25 13:28:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:28,437 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 180 transitions. [2020-09-25 13:28:28,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:28:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 180 transitions. [2020-09-25 13:28:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 13:28:28,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:28,438 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:28,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:28:28,438 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:28,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:28,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-25 13:28:28,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:28,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818283748] [2020-09-25 13:28:28,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:28:28,464 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:28:28,464 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:28:28,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:28:28,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:28:28 BoogieIcfgContainer [2020-09-25 13:28:28,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:28:28,497 INFO L168 Benchmark]: Toolchain (without parser) took 28192.08 ms. Allocated memory was 140.0 MB in the beginning and 456.1 MB in the end (delta: 316.1 MB). Free memory was 102.2 MB in the beginning and 301.8 MB in the end (delta: -199.6 MB). Peak memory consumption was 116.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:28,498 INFO L168 Benchmark]: CDTParser took 1.76 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:28:28,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 823.19 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 169.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:28,500 INFO L168 Benchmark]: Boogie Preprocessor took 88.64 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 165.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:28,500 INFO L168 Benchmark]: RCFGBuilder took 878.70 ms. Allocated memory is still 202.9 MB. Free memory was 165.9 MB in the beginning and 104.9 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:28,501 INFO L168 Benchmark]: TraceAbstraction took 26393.24 ms. Allocated memory was 202.9 MB in the beginning and 456.1 MB in the end (delta: 253.2 MB). Free memory was 104.2 MB in the beginning and 301.8 MB in the end (delta: -197.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:28:28,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.76 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 823.19 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 169.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.64 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 165.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 878.70 ms. Allocated memory is still 202.9 MB. Free memory was 165.9 MB in the beginning and 104.9 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26393.24 ms. Allocated memory was 202.9 MB in the beginning and 456.1 MB in the end (delta: 253.2 MB). Free memory was 104.2 MB in the beginning and 301.8 MB in the end (delta: -197.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.2s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1068 SDtfs, 3187 SDslu, 4626 SDs, 0 SdLazy, 2897 SolverSat, 248 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 490 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 487 NumberOfCodeBlocks, 487 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 413 ConstructedInterpolants, 0 QuantifiedInterpolants, 245273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 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...