/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=LOWLEXORDER --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-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:38:06,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:38:06,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:38:06,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:38:06,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:38:06,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:38:06,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:38:06,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:38:06,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:38:06,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:38:06,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:38:06,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:38:06,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:38:06,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:38:06,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:38:06,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:38:06,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:38:06,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:38:06,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:38:06,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:38:06,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:38:06,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:38:06,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:38:06,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:38:06,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:38:06,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:38:06,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:38:06,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:38:06,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:38:06,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:38:06,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:38:06,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:38:06,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:38:06,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:38:06,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:38:06,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:38:06,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:38:06,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:38:06,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:38:06,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:38:06,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:38:06,818 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 [2020-09-24 21:38:06,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:38:06,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:38:06,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:38:06,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:38:06,872 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:38:06,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:38:06,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:38:06,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:38:06,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:38:06,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:38:06,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:38:06,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:38:06,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:38:06,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:38:06,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:38:06,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:38:06,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:38:06,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:38:06,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:38:06,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:38:06,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:38:06,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:06,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:38:06,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:38:06,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:38:06,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:38:06,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:38:06,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:38:06,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:38:06,878 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:38:07,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:38:07,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:38:07,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:38:07,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:38:07,413 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:38:07,414 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-24 21:38:07,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcf9dd74/fd12802b737b4d3098da760ccf5b3b16/FLAGc374b73b1 [2020-09-24 21:38:08,112 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:38:08,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-24 21:38:08,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcf9dd74/fd12802b737b4d3098da760ccf5b3b16/FLAGc374b73b1 [2020-09-24 21:38:08,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcf9dd74/fd12802b737b4d3098da760ccf5b3b16 [2020-09-24 21:38:08,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:38:08,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:38:08,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:08,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:38:08,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:38:08,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:08" (1/1) ... [2020-09-24 21:38:08,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729acd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:08, skipping insertion in model container [2020-09-24 21:38:08,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:08" (1/1) ... [2020-09-24 21:38:08,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:38:08,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:38:08,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:09,004 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:38:09,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:09,114 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:38:09,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09 WrapperNode [2020-09-24 21:38:09,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:09,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:38:09,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:38:09,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:38:09,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (1/1) ... [2020-09-24 21:38:09,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (1/1) ... [2020-09-24 21:38:09,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (1/1) ... [2020-09-24 21:38:09,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (1/1) ... [2020-09-24 21:38:09,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (1/1) ... [2020-09-24 21:38:09,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (1/1) ... [2020-09-24 21:38:09,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (1/1) ... [2020-09-24 21:38:09,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:38:09,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:38:09,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:38:09,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:38:09,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (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 [2020-09-24 21:38:09,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:38:09,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:38:09,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:38:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 21:38:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 21:38:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 21:38:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 21:38:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 21:38:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 21:38:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 21:38:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 21:38:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 21:38:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 21:38:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 21:38:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 21:38:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 21:38:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 21:38:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 21:38:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 21:38:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 21:38:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 21:38:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 21:38:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 21:38:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 21:38:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 21:38:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 21:38:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 21:38:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 21:38:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 21:38:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 21:38:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 21:38:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 21:38:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 21:38:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 21:38:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 21:38:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 21:38:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 21:38:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 21:38:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 21:38:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 21:38:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 21:38:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 21:38:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 21:38:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 21:38:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 21:38:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 21:38:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 21:38:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 21:38:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 21:38:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 21:38:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 21:38:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 21:38:09,324 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 21:38:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:38:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 21:38:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 21:38:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:38:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 21:38:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 21:38:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 21:38:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 21:38:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 21:38:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:38:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 21:38:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 21:38:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 21:38:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:38:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 21:38:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 21:38:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 21:38:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 21:38:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 21:38:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 21:38:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 21:38:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 21:38:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 21:38:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 21:38:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 21:38:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 21:38:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 21:38:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 21:38:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 21:38:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 21:38:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 21:38:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 21:38:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 21:38:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 21:38:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 21:38:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 21:38:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 21:38:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 21:38:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 21:38:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 21:38:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 21:38:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 21:38:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 21:38:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 21:38:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 21:38:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 21:38:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 21:38:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 21:38:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 21:38:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 21:38:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 21:38:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 21:38:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 21:38:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:38:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:38:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:38:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:38:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:38:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:38:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:38:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:38:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:38:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:38:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:38:10,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:38:10,038 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-24 21:38:10,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:10 BoogieIcfgContainer [2020-09-24 21:38:10,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:38:10,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:38:10,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:38:10,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:38:10,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:38:08" (1/3) ... [2020-09-24 21:38:10,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f27382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:10, skipping insertion in model container [2020-09-24 21:38:10,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:09" (2/3) ... [2020-09-24 21:38:10,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f27382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:10, skipping insertion in model container [2020-09-24 21:38:10,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:10" (3/3) ... [2020-09-24 21:38:10,068 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-24 21:38:10,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:38:10,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-24 21:38:10,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-24 21:38:10,158 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:38:10,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:38:10,159 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:38:10,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:38:10,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:38:10,159 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:38:10,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:38:10,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:38:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-24 21:38:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 21:38:10,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:10,198 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] [2020-09-24 21:38:10,199 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:10,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-24 21:38:10,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:10,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249441637] [2020-09-24 21:38:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:10,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:11,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 21:38:11,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-09-24 21:38:11,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:38:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:11,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:38:11,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:38:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:11,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:11,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:11,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:38:11,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:11,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249441637] [2020-09-24 21:38:11,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:11,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:38:11,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136937317] [2020-09-24 21:38:11,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:38:11,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:11,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:38:11,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:38:11,319 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-24 21:38:11,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:11,988 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2020-09-24 21:38:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:38:11,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-24 21:38:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:12,019 INFO L225 Difference]: With dead ends: 281 [2020-09-24 21:38:12,020 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 21:38:12,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:38:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 21:38:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-24 21:38:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-24 21:38:12,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-24 21:38:12,111 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 23 [2020-09-24 21:38:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:12,111 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-24 21:38:12,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:38:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-24 21:38:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 21:38:12,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:12,115 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] [2020-09-24 21:38:12,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:38:12,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:12,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-24 21:38:12,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:12,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485929363] [2020-09-24 21:38:12,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:12,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:12,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:38:12,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-24 21:38:12,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:38:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:38:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:12,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:12,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:12,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:12,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:38:12,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:12,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485929363] [2020-09-24 21:38:12,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:12,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:12,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54215481] [2020-09-24 21:38:12,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:12,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:12,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:12,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:12,498 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-24 21:38:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:12,760 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-24 21:38:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:38:12,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 21:38:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:12,762 INFO L225 Difference]: With dead ends: 146 [2020-09-24 21:38:12,762 INFO L226 Difference]: Without dead ends: 143 [2020-09-24 21:38:12,763 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 [2020-09-24 21:38:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-24 21:38:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-24 21:38:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 21:38:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-24 21:38:12,776 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-24 21:38:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:12,777 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-24 21:38:12,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-24 21:38:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 21:38:12,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:12,779 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] [2020-09-24 21:38:12,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:38:12,780 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:12,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-24 21:38:12,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:12,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027781820] [2020-09-24 21:38:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:13,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 21:38:13,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-24 21:38:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:38:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:38:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:13,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:13,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:13,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:38:13,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:13,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:13,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:13,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:13,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:38:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:13,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027781820] [2020-09-24 21:38:13,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:13,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:13,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810221892] [2020-09-24 21:38:13,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:13,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:13,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:13,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:13,549 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-24 21:38:13,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:13,922 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2020-09-24 21:38:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:38:13,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 21:38:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:13,925 INFO L225 Difference]: With dead ends: 162 [2020-09-24 21:38:13,926 INFO L226 Difference]: Without dead ends: 140 [2020-09-24 21:38:13,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:38:13,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-24 21:38:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2020-09-24 21:38:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-24 21:38:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-09-24 21:38:13,958 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 38 [2020-09-24 21:38:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:13,959 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-09-24 21:38:13,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-09-24 21:38:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 21:38:13,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:13,964 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] [2020-09-24 21:38:13,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:38:13,964 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-24 21:38:13,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:13,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970498982] [2020-09-24 21:38:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:14,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:14,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 21:38:14,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:14,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-24 21:38:14,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:38:14,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 21:38:14,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 21:38:14,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:14,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:14,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:14,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:14,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:38:14,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:14,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970498982] [2020-09-24 21:38:14,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:14,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:38:14,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774098094] [2020-09-24 21:38:14,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:38:14,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:14,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:38:14,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:38:14,329 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 5 states. [2020-09-24 21:38:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:14,539 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-09-24 21:38:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:38:14,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-24 21:38:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:14,542 INFO L225 Difference]: With dead ends: 117 [2020-09-24 21:38:14,542 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 21:38:14,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 21:38:14,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2020-09-24 21:38:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-24 21:38:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-09-24 21:38:14,557 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 38 [2020-09-24 21:38:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:14,557 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-09-24 21:38:14,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:38:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-09-24 21:38:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 21:38:14,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:14,559 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] [2020-09-24 21:38:14,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:38:14,559 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:14,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-24 21:38:14,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:14,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252889113] [2020-09-24 21:38:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:14,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:14,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 21:38:14,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-24 21:38:14,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 21:38:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:38:14,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:14,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:14,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:14,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:38:14,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:14,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:14,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252889113] [2020-09-24 21:38:14,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:14,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:38:14,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713968162] [2020-09-24 21:38:14,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:38:14,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:14,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:38:14,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:38:14,982 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 5 states. [2020-09-24 21:38:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:15,206 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-09-24 21:38:15,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:38:15,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-24 21:38:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:15,208 INFO L225 Difference]: With dead ends: 112 [2020-09-24 21:38:15,208 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 21:38:15,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:15,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 21:38:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-24 21:38:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 21:38:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-24 21:38:15,217 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 42 [2020-09-24 21:38:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:15,218 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-24 21:38:15,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:38:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-24 21:38:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 21:38:15,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:15,219 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] [2020-09-24 21:38:15,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:38:15,220 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:15,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:15,220 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-24 21:38:15,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:15,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483438543] [2020-09-24 21:38:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:15,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:15,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:17,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:17,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:38:17,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-09-24 21:38:17,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:38:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 21:38:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:17,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:17,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:17,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:17,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:38:17,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:17,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483438543] [2020-09-24 21:38:17,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:17,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 21:38:17,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450410591] [2020-09-24 21:38:17,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:38:17,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:17,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:38:17,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:38:17,270 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 13 states. [2020-09-24 21:38:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:17,803 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2020-09-24 21:38:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:38:17,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 21:38:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:17,805 INFO L225 Difference]: With dead ends: 156 [2020-09-24 21:38:17,805 INFO L226 Difference]: Without dead ends: 154 [2020-09-24 21:38:17,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:38:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-24 21:38:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 132. [2020-09-24 21:38:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-24 21:38:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 138 transitions. [2020-09-24 21:38:17,818 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 138 transitions. Word has length 44 [2020-09-24 21:38:17,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:17,819 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 138 transitions. [2020-09-24 21:38:17,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:38:17,819 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 138 transitions. [2020-09-24 21:38:17,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 21:38:17,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:17,824 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] [2020-09-24 21:38:17,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:38:17,825 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:17,825 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-24 21:38:17,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:17,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548924401] [2020-09-24 21:38:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:21,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:22,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:22,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 21:38:22,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:38:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-09-24 21:38:22,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:38:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:38:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:23,477 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-09-24 21:38:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:23,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:23,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:23,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:23,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:23,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:23,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:23,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548924401] [2020-09-24 21:38:23,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:23,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:38:23,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525690679] [2020-09-24 21:38:23,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:38:23,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:23,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:38:23,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:38:23,979 INFO L87 Difference]: Start difference. First operand 132 states and 138 transitions. Second operand 17 states. [2020-09-24 21:38:24,393 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-09-24 21:38:24,708 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-09-24 21:38:25,051 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-09-24 21:38:25,536 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-09-24 21:38:25,824 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-09-24 21:38:26,112 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-09-24 21:38:26,433 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-09-24 21:38:26,756 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-09-24 21:38:27,141 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-09-24 21:38:27,416 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-09-24 21:38:27,643 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-09-24 21:38:27,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:27,830 INFO L93 Difference]: Finished difference Result 184 states and 192 transitions. [2020-09-24 21:38:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:38:27,831 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-09-24 21:38:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:27,832 INFO L225 Difference]: With dead ends: 184 [2020-09-24 21:38:27,832 INFO L226 Difference]: Without dead ends: 182 [2020-09-24 21:38:27,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:38:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-24 21:38:27,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 144. [2020-09-24 21:38:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-24 21:38:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2020-09-24 21:38:27,843 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 45 [2020-09-24 21:38:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:27,844 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2020-09-24 21:38:27,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:38:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2020-09-24 21:38:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 21:38:27,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:27,845 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] [2020-09-24 21:38:27,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:38:27,846 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 888731196, now seen corresponding path program 1 times [2020-09-24 21:38:27,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:27,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223751205] [2020-09-24 21:38:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:27,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:30,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:30,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:38:30,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:38:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2516 [2020-09-24 21:38:30,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:38:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 21:38:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:38:30,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:30,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:30,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:30,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:30,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:38:30,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:30,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:30,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223751205] [2020-09-24 21:38:30,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:30,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:38:30,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984010071] [2020-09-24 21:38:30,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:38:30,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:30,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:38:30,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:38:30,914 INFO L87 Difference]: Start difference. First operand 144 states and 151 transitions. Second operand 15 states. [2020-09-24 21:38:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:32,017 INFO L93 Difference]: Finished difference Result 196 states and 205 transitions. [2020-09-24 21:38:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:38:32,018 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-09-24 21:38:32,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:32,020 INFO L225 Difference]: With dead ends: 196 [2020-09-24 21:38:32,021 INFO L226 Difference]: Without dead ends: 169 [2020-09-24 21:38:32,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:38:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-24 21:38:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2020-09-24 21:38:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-24 21:38:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2020-09-24 21:38:32,030 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 49 [2020-09-24 21:38:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:32,031 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2020-09-24 21:38:32,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:38:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2020-09-24 21:38:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:38:32,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:32,032 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:32,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:38:32,032 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:32,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1939042985, now seen corresponding path program 2 times [2020-09-24 21:38:32,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:32,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061798160] [2020-09-24 21:38:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:32,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:32,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 21:38:32,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:32,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-24 21:38:32,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:38:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 21:38:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:38:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:32,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:32,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:32,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:32,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:32,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 21:38:32,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061798160] [2020-09-24 21:38:32,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:32,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:38:32,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941265571] [2020-09-24 21:38:32,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:38:32,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:32,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:38:32,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:38:32,461 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand 7 states. [2020-09-24 21:38:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:32,875 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2020-09-24 21:38:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:38:32,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 21:38:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:32,878 INFO L225 Difference]: With dead ends: 164 [2020-09-24 21:38:32,878 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 21:38:32,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:38:32,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 21:38:32,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2020-09-24 21:38:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 21:38:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2020-09-24 21:38:32,889 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 52 [2020-09-24 21:38:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:32,890 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2020-09-24 21:38:32,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:38:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2020-09-24 21:38:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 21:38:32,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:32,892 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] [2020-09-24 21:38:32,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:38:32,893 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:32,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-24 21:38:32,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:32,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364256659] [2020-09-24 21:38:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:37,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:37,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 21:38:37,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:38:37,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4452 [2020-09-24 21:38:37,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:38:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 21:38:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:37,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:37,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:37,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:37,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:37,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:37,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:37,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:37,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:37,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364256659] [2020-09-24 21:38:37,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:37,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 21:38:37,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081971719] [2020-09-24 21:38:37,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:38:37,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:37,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:38:37,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:38:37,643 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand 17 states. [2020-09-24 21:38:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:38,514 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2020-09-24 21:38:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:38:38,515 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-09-24 21:38:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:38,517 INFO L225 Difference]: With dead ends: 136 [2020-09-24 21:38:38,517 INFO L226 Difference]: Without dead ends: 134 [2020-09-24 21:38:38,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:38:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-24 21:38:38,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2020-09-24 21:38:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 21:38:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-24 21:38:38,524 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-09-24 21:38:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:38,524 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-24 21:38:38,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:38:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-24 21:38:38,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 21:38:38,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:38,525 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] [2020-09-24 21:38:38,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:38:38,526 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:38,526 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-24 21:38:38,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:38,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363023975] [2020-09-24 21:38:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:38,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:39,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:39,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 21:38:39,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-09-24 21:38:39,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:38:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:38:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 21:38:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:39,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:39,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:39,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:38:39,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:39,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:39,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:39,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:39,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363023975] [2020-09-24 21:38:39,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:39,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:38:39,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925924747] [2020-09-24 21:38:39,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:38:39,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:39,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:38:39,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:38:39,978 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 17 states. [2020-09-24 21:38:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:41,545 INFO L93 Difference]: Finished difference Result 181 states and 189 transitions. [2020-09-24 21:38:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:38:41,546 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-24 21:38:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:41,547 INFO L225 Difference]: With dead ends: 181 [2020-09-24 21:38:41,548 INFO L226 Difference]: Without dead ends: 178 [2020-09-24 21:38:41,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:38:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-24 21:38:41,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 125. [2020-09-24 21:38:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-24 21:38:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-09-24 21:38:41,556 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 55 [2020-09-24 21:38:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:41,556 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-09-24 21:38:41,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:38:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-09-24 21:38:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 21:38:41,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:41,558 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] [2020-09-24 21:38:41,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:38:41,558 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:41,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1380187476, now seen corresponding path program 1 times [2020-09-24 21:38:41,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:41,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899216809] [2020-09-24 21:38:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:43,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:46,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:46,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:38:46,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:38:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:38:46,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:38:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:38:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:46,637 ERROR L253 erpolLogProxyWrapper]: Interpolant 22 not inductive [2020-09-24 21:38:46,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 21:38:46,736 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-24 21:38:46,744 INFO L168 Benchmark]: Toolchain (without parser) took 38357.93 ms. Allocated memory was 148.4 MB in the beginning and 467.7 MB in the end (delta: 319.3 MB). Free memory was 102.5 MB in the beginning and 379.8 MB in the end (delta: -277.3 MB). Peak memory consumption was 330.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:46,748 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:38:46,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.07 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 172.2 MB in the end (delta: -70.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:46,750 INFO L168 Benchmark]: Boogie Preprocessor took 93.77 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 168.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:46,751 INFO L168 Benchmark]: RCFGBuilder took 840.68 ms. Allocated memory is still 205.5 MB. Free memory was 168.4 MB in the beginning and 111.3 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:46,753 INFO L168 Benchmark]: TraceAbstraction took 36688.62 ms. Allocated memory was 205.5 MB in the beginning and 467.7 MB in the end (delta: 262.1 MB). Free memory was 111.3 MB in the beginning and 379.8 MB in the end (delta: -268.4 MB). Peak memory consumption was 282.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:46,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.07 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 172.2 MB in the end (delta: -70.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.77 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 168.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 840.68 ms. Allocated memory is still 205.5 MB. Free memory was 168.4 MB in the beginning and 111.3 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36688.62 ms. Allocated memory was 205.5 MB in the beginning and 467.7 MB in the end (delta: 262.1 MB). Free memory was 111.3 MB in the beginning and 379.8 MB in the end (delta: -268.4 MB). Peak memory consumption was 282.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...