/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:07,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:07,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:07,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:07,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:07,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:07,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:07,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:07,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:07,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:07,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:07,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:07,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:07,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:07,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:07,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:07,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:07,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:07,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:07,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:07,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:07,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:07,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:07,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:07,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:07,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:07,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:07,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:07,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:07,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:07,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:07,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:07,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:07,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:07,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:07,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:07,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:07,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:07,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:07,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:07,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:07,855 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 19:24:07,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:07,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:07,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:07,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:07,900 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:07,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:07,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:07,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:07,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:07,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:07,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:07,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:07,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:07,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:07,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:07,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:07,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:07,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:07,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:07,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:07,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:07,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:07,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:07,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:07,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:07,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:07,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:07,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:07,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:07,905 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:24:08,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:08,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:08,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:08,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:08,388 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:08,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-24 19:24:08,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37d2a81a/86a1561655b3491f86c0a71f5b614a9c/FLAG9584aa415 [2020-09-24 19:24:09,055 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:09,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-24 19:24:09,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37d2a81a/86a1561655b3491f86c0a71f5b614a9c/FLAG9584aa415 [2020-09-24 19:24:09,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37d2a81a/86a1561655b3491f86c0a71f5b614a9c [2020-09-24 19:24:09,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:09,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:09,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:09,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:09,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:09,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:09" (1/1) ... [2020-09-24 19:24:09,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:09, skipping insertion in model container [2020-09-24 19:24:09,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:09" (1/1) ... [2020-09-24 19:24:09,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:09,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:09,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:09,968 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:10,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:10,088 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:10,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10 WrapperNode [2020-09-24 19:24:10,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:10,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:10,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:10,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:10,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (1/1) ... [2020-09-24 19:24:10,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (1/1) ... [2020-09-24 19:24:10,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (1/1) ... [2020-09-24 19:24:10,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (1/1) ... [2020-09-24 19:24:10,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (1/1) ... [2020-09-24 19:24:10,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (1/1) ... [2020-09-24 19:24:10,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (1/1) ... [2020-09-24 19:24:10,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:10,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:10,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:10,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:10,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (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 19:24:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 19:24:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 19:24:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 19:24:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 19:24:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 19:24:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 19:24:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 19:24:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 19:24:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 19:24:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 19:24:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 19:24:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 19:24:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 19:24:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 19:24:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 19:24:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 19:24:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 19:24:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 19:24:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 19:24:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 19:24:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 19:24:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 19:24:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 19:24:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 19:24:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 19:24:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 19:24:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 19:24:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 19:24:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 19:24:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 19:24:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 19:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 19:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 19:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 19:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 19:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 19:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 19:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 19:24:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 19:24:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 19:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 19:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 19:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 19:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 19:24:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 19:24:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 19:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 19:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 19:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 19:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 19:24:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 19:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 19:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 19:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 19:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 19:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 19:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 19:24:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 19:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 19:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 19:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 19:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 19:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 19:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 19:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 19:24:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 19:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 19:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 19:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 19:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 19:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 19:24:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 19:24:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:24:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:11,064 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:11,064 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 19:24:11,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:11 BoogieIcfgContainer [2020-09-24 19:24:11,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:11,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:11,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:11,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:11,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:09" (1/3) ... [2020-09-24 19:24:11,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399edab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:11, skipping insertion in model container [2020-09-24 19:24:11,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:10" (2/3) ... [2020-09-24 19:24:11,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399edab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:11, skipping insertion in model container [2020-09-24 19:24:11,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:11" (3/3) ... [2020-09-24 19:24:11,083 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-24 19:24:11,096 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:11,108 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 19:24:11,130 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 19:24:11,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:24:11,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:24:11,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:24:11,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:24:11,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:24:11,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:24:11,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:24:11,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:24:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 19:24:11,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-24 19:24:11,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:11,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:11,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:11,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:11,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-09-24 19:24:11,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:11,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104468009] [2020-09-24 19:24:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:11,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:11,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:24:11,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-24 19:24:11,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:24:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:24:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:24:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:11,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:11,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:11,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:11,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:11,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:24:11,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:11,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:11,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:11,857 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 19:24:11,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104468009] [2020-09-24 19:24:11,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:11,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:24:11,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644049336] [2020-09-24 19:24:11,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:24:11,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:11,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:24:11,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:24:11,891 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 19:24:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:12,330 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-09-24 19:24:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:24:12,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-24 19:24:12,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:12,348 INFO L225 Difference]: With dead ends: 359 [2020-09-24 19:24:12,349 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 19:24:12,355 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 19:24:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 19:24:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 19:24:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 19:24:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-09-24 19:24:12,423 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-09-24 19:24:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:12,424 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-09-24 19:24:12,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:24:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-09-24 19:24:12,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 19:24:12,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:12,426 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] [2020-09-24 19:24:12,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:24:12,427 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:12,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-09-24 19:24:12,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:12,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598947946] [2020-09-24 19:24:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:12,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 19:24:12,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-24 19:24:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:24:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:24:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:12,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:12,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:12,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:12,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:12,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:12,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:24:12,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:12,814 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 19:24:12,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598947946] [2020-09-24 19:24:12,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:12,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:24:12,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466887333] [2020-09-24 19:24:12,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:24:12,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:12,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:24:12,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:12,819 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-09-24 19:24:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:13,163 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-09-24 19:24:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:24:13,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-24 19:24:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:13,169 INFO L225 Difference]: With dead ends: 170 [2020-09-24 19:24:13,173 INFO L226 Difference]: Without dead ends: 165 [2020-09-24 19:24:13,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:13,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-24 19:24:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-24 19:24:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 19:24:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-09-24 19:24:13,207 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-09-24 19:24:13,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:13,210 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-09-24 19:24:13,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:24:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-09-24 19:24:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 19:24:13,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:13,212 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] [2020-09-24 19:24:13,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:24:13,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:13,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:13,214 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-09-24 19:24:13,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:13,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628941035] [2020-09-24 19:24:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:13,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:13,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:24:13,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:13,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-24 19:24:13,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:24:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:24:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:13,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:13,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:13,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:13,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:13,676 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 19:24:13,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628941035] [2020-09-24 19:24:13,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:13,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:24:13,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670316886] [2020-09-24 19:24:13,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:24:13,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:24:13,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:13,679 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 6 states. [2020-09-24 19:24:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:14,074 INFO L93 Difference]: Finished difference Result 264 states and 279 transitions. [2020-09-24 19:24:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:24:14,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-24 19:24:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:14,078 INFO L225 Difference]: With dead ends: 264 [2020-09-24 19:24:14,078 INFO L226 Difference]: Without dead ends: 259 [2020-09-24 19:24:14,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:24:14,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-24 19:24:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 170. [2020-09-24 19:24:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-24 19:24:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 180 transitions. [2020-09-24 19:24:14,096 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 180 transitions. Word has length 27 [2020-09-24 19:24:14,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:14,096 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 180 transitions. [2020-09-24 19:24:14,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:24:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 180 transitions. [2020-09-24 19:24:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 19:24:14,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:14,098 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] [2020-09-24 19:24:14,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:24:14,099 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:14,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-09-24 19:24:14,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:14,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447414981] [2020-09-24 19:24:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:14,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:14,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 19:24:14,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:24:14,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-09-24 19:24:14,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:24:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:24:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:24:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:14,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:14,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:14,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:14,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:14,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:14,753 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 19:24:14,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447414981] [2020-09-24 19:24:14,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:14,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:24:14,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640166788] [2020-09-24 19:24:14,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:24:14,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:14,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:24:14,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:24:14,756 INFO L87 Difference]: Start difference. First operand 170 states and 180 transitions. Second operand 5 states. [2020-09-24 19:24:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:15,060 INFO L93 Difference]: Finished difference Result 200 states and 213 transitions. [2020-09-24 19:24:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:24:15,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-24 19:24:15,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:15,062 INFO L225 Difference]: With dead ends: 200 [2020-09-24 19:24:15,062 INFO L226 Difference]: Without dead ends: 166 [2020-09-24 19:24:15,063 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 19:24:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-24 19:24:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2020-09-24 19:24:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 19:24:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-09-24 19:24:15,075 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 33 [2020-09-24 19:24:15,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:15,075 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-09-24 19:24:15,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:24:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-09-24 19:24:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 19:24:15,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:15,077 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] [2020-09-24 19:24:15,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:24:15,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:15,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1216115010, now seen corresponding path program 1 times [2020-09-24 19:24:15,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:15,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374121612] [2020-09-24 19:24:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:16,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:16,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:24:16,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:16,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:24:16,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:16,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:16,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:24:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:24:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:16,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:16,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:16,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:16,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:16,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:16,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:16,291 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 19:24:16,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374121612] [2020-09-24 19:24:16,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:16,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:24:16,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096575967] [2020-09-24 19:24:16,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:24:16,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:16,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:24:16,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:24:16,294 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-09-24 19:24:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:16,942 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2020-09-24 19:24:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:24:16,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 19:24:16,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:16,945 INFO L225 Difference]: With dead ends: 251 [2020-09-24 19:24:16,945 INFO L226 Difference]: Without dead ends: 246 [2020-09-24 19:24:16,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:24:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-24 19:24:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 154. [2020-09-24 19:24:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-24 19:24:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions. [2020-09-24 19:24:16,966 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 34 [2020-09-24 19:24:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:16,969 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions. [2020-09-24 19:24:16,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:24:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions. [2020-09-24 19:24:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 19:24:16,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:16,971 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] [2020-09-24 19:24:16,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:24:16,972 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash 125861883, now seen corresponding path program 1 times [2020-09-24 19:24:16,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:16,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503670891] [2020-09-24 19:24:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:18,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:18,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 19:24:18,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:24:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:24:18,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:24:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:24:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:18,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:18,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:18,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:18,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:18,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:18,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:18,070 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 19:24:18,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503670891] [2020-09-24 19:24:18,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:18,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:24:18,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858690436] [2020-09-24 19:24:18,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:24:18,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:18,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:24:18,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:18,073 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand 6 states. [2020-09-24 19:24:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:18,429 INFO L93 Difference]: Finished difference Result 364 states and 386 transitions. [2020-09-24 19:24:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:24:18,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-09-24 19:24:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:18,431 INFO L225 Difference]: With dead ends: 364 [2020-09-24 19:24:18,431 INFO L226 Difference]: Without dead ends: 241 [2020-09-24 19:24:18,435 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 19:24:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-24 19:24:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-09-24 19:24:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 19:24:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2020-09-24 19:24:18,447 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 40 [2020-09-24 19:24:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:18,448 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2020-09-24 19:24:18,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:24:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2020-09-24 19:24:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 19:24:18,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:18,451 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 19:24:18,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:24:18,451 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:18,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:18,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-09-24 19:24:18,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:18,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280406941] [2020-09-24 19:24:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:19,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 19:24:19,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:24:19,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:24:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:24:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:24:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:19,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:19,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:19,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:19,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:19,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:19,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:24:19,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:19,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:19,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:19,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:19,827 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 19:24:19,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280406941] [2020-09-24 19:24:19,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:19,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 19:24:19,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131803882] [2020-09-24 19:24:19,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:24:19,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:19,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:24:19,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:24:19,833 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand 9 states. [2020-09-24 19:24:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:20,897 INFO L93 Difference]: Finished difference Result 238 states and 252 transitions. [2020-09-24 19:24:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:24:20,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-24 19:24:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:20,900 INFO L225 Difference]: With dead ends: 238 [2020-09-24 19:24:20,900 INFO L226 Difference]: Without dead ends: 236 [2020-09-24 19:24:20,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:24:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-24 19:24:20,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 155. [2020-09-24 19:24:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 19:24:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2020-09-24 19:24:20,909 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 42 [2020-09-24 19:24:20,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:20,909 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2020-09-24 19:24:20,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:24:20,910 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2020-09-24 19:24:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 19:24:20,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:20,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:20,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:24:20,918 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:20,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:20,919 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-09-24 19:24:20,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:20,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949682457] [2020-09-24 19:24:20,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:21,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 19:24:21,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:21,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 19:24:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 19:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:24:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:21,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:21,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:21,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:24:21,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:21,061 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 19:24:21,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949682457] [2020-09-24 19:24:21,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:21,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:24:21,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561052195] [2020-09-24 19:24:21,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:24:21,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:21,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:24:21,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:21,064 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand 4 states. [2020-09-24 19:24:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:21,280 INFO L93 Difference]: Finished difference Result 195 states and 208 transitions. [2020-09-24 19:24:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:24:21,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 19:24:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:21,282 INFO L225 Difference]: With dead ends: 195 [2020-09-24 19:24:21,283 INFO L226 Difference]: Without dead ends: 193 [2020-09-24 19:24:21,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-24 19:24:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 157. [2020-09-24 19:24:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 19:24:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-24 19:24:21,293 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 43 [2020-09-24 19:24:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:21,294 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-24 19:24:21,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:24:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-24 19:24:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 19:24:21,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:21,296 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] [2020-09-24 19:24:21,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:24:21,297 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-09-24 19:24:21,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:21,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238840846] [2020-09-24 19:24:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:21,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:22,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:24:22,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:24:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-09-24 19:24:22,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:24:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:24:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:24:22,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:22,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:22,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:24:22,206 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 19:24:22,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238840846] [2020-09-24 19:24:22,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:22,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:24:22,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174638350] [2020-09-24 19:24:22,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:24:22,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:22,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:24:22,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:22,213 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-09-24 19:24:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:22,442 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-09-24 19:24:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:24:22,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-24 19:24:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:22,444 INFO L225 Difference]: With dead ends: 157 [2020-09-24 19:24:22,446 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 19:24:22,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 19:24:22,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-24 19:24:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 19:24:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2020-09-24 19:24:22,453 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 45 [2020-09-24 19:24:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:22,454 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2020-09-24 19:24:22,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:24:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2020-09-24 19:24:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 19:24:22,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:22,456 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] [2020-09-24 19:24:22,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:24:22,456 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:22,457 INFO L82 PathProgramCache]: Analyzing trace with hash 11890970, now seen corresponding path program 1 times [2020-09-24 19:24:22,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:22,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238856809] [2020-09-24 19:24:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:23,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:23,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 19:24:23,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:24:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:24:23,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:24:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:24:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:24:23,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:23,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:23,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:23,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:24:23,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:23,603 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 19:24:23,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238856809] [2020-09-24 19:24:23,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:23,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:24:23,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331931546] [2020-09-24 19:24:23,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:24:23,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:23,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:24:23,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:24:23,607 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 7 states. [2020-09-24 19:24:24,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:24,294 INFO L93 Difference]: Finished difference Result 340 states and 364 transitions. [2020-09-24 19:24:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:24:24,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-09-24 19:24:24,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:24,298 INFO L225 Difference]: With dead ends: 340 [2020-09-24 19:24:24,298 INFO L226 Difference]: Without dead ends: 275 [2020-09-24 19:24:24,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:24:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-24 19:24:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 176. [2020-09-24 19:24:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-24 19:24:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 187 transitions. [2020-09-24 19:24:24,316 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 187 transitions. Word has length 49 [2020-09-24 19:24:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:24,318 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 187 transitions. [2020-09-24 19:24:24,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:24:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 187 transitions. [2020-09-24 19:24:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 19:24:24,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:24,320 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 19:24:24,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:24:24,321 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:24,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-09-24 19:24:24,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:24,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879169837] [2020-09-24 19:24:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:24,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:25,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:25,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:25,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:24:25,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 19:24:25,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:24:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 19:24:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:24:25,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:24:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:25,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:25,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:25,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:25,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:25,691 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 19:24:25,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879169837] [2020-09-24 19:24:25,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:25,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 19:24:25,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633393529] [2020-09-24 19:24:25,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 19:24:25,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:25,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 19:24:25,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:24:25,693 INFO L87 Difference]: Start difference. First operand 176 states and 187 transitions. Second operand 12 states. [2020-09-24 19:24:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:26,868 INFO L93 Difference]: Finished difference Result 454 states and 484 transitions. [2020-09-24 19:24:26,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:24:26,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-09-24 19:24:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:26,874 INFO L225 Difference]: With dead ends: 454 [2020-09-24 19:24:26,874 INFO L226 Difference]: Without dead ends: 451 [2020-09-24 19:24:26,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-09-24 19:24:26,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-24 19:24:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 202. [2020-09-24 19:24:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-24 19:24:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 216 transitions. [2020-09-24 19:24:26,889 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 216 transitions. Word has length 54 [2020-09-24 19:24:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:26,890 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 216 transitions. [2020-09-24 19:24:26,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 19:24:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 216 transitions. [2020-09-24 19:24:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 19:24:26,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:26,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:26,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:24:26,891 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash 880863659, now seen corresponding path program 1 times [2020-09-24 19:24:26,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:26,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114015155] [2020-09-24 19:24:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:27,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:27,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:24:27,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:24:27,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:24:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:24:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:24:27,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:28,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:28,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:28,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:28,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:28,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:24:28,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:28,059 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 19:24:28,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114015155] [2020-09-24 19:24:28,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:28,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 19:24:28,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99600711] [2020-09-24 19:24:28,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:24:28,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:24:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:24:28,062 INFO L87 Difference]: Start difference. First operand 202 states and 216 transitions. Second operand 9 states. [2020-09-24 19:24:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:28,755 INFO L93 Difference]: Finished difference Result 379 states and 407 transitions. [2020-09-24 19:24:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:24:28,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-09-24 19:24:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:28,758 INFO L225 Difference]: With dead ends: 379 [2020-09-24 19:24:28,758 INFO L226 Difference]: Without dead ends: 314 [2020-09-24 19:24:28,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:24:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-09-24 19:24:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 194. [2020-09-24 19:24:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-24 19:24:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 208 transitions. [2020-09-24 19:24:28,770 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 208 transitions. Word has length 56 [2020-09-24 19:24:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:28,770 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 208 transitions. [2020-09-24 19:24:28,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:24:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 208 transitions. [2020-09-24 19:24:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 19:24:28,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:28,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:28,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:24:28,772 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:28,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-09-24 19:24:28,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:28,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858292667] [2020-09-24 19:24:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:28,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:29,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:29,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:24:29,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:29,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 19:24:29,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 19:24:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:24:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:29,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:29,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:29,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:29,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:24:29,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:29,078 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 19:24:29,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858292667] [2020-09-24 19:24:29,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:29,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:24:29,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702348507] [2020-09-24 19:24:29,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:24:29,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:29,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:24:29,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:29,080 INFO L87 Difference]: Start difference. First operand 194 states and 208 transitions. Second operand 4 states. [2020-09-24 19:24:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:29,289 INFO L93 Difference]: Finished difference Result 200 states and 214 transitions. [2020-09-24 19:24:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:24:29,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-24 19:24:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:29,291 INFO L225 Difference]: With dead ends: 200 [2020-09-24 19:24:29,291 INFO L226 Difference]: Without dead ends: 195 [2020-09-24 19:24:29,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-24 19:24:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-09-24 19:24:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 19:24:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2020-09-24 19:24:29,306 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 56 [2020-09-24 19:24:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:29,306 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2020-09-24 19:24:29,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:24:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2020-09-24 19:24:29,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 19:24:29,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:29,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:29,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:24:29,308 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:29,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-09-24 19:24:29,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:29,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763313501] [2020-09-24 19:24:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:24:29,332 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:24:29,335 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:24:29,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:24:29,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:24:29 BoogieIcfgContainer [2020-09-24 19:24:29,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:24:29,400 INFO L168 Benchmark]: Toolchain (without parser) took 20032.51 ms. Allocated memory was 139.5 MB in the beginning and 411.0 MB in the end (delta: 271.6 MB). Free memory was 101.4 MB in the beginning and 114.8 MB in the end (delta: -13.4 MB). Peak memory consumption was 258.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:29,400 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-24 19:24:29,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.37 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 170.6 MB in the end (delta: -69.8 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:29,402 INFO L168 Benchmark]: Boogie Preprocessor took 95.40 ms. Allocated memory is still 203.9 MB. Free memory was 170.6 MB in the beginning and 167.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:29,403 INFO L168 Benchmark]: RCFGBuilder took 886.42 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 103.8 MB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:29,403 INFO L168 Benchmark]: TraceAbstraction took 18316.78 ms. Allocated memory was 203.9 MB in the beginning and 411.0 MB in the end (delta: 207.1 MB). Free memory was 103.8 MB in the beginning and 114.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 196.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:24:29,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.37 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 170.6 MB in the end (delta: -69.8 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.40 ms. Allocated memory is still 203.9 MB. Free memory was 170.6 MB in the beginning and 167.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 886.42 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 103.8 MB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18316.78 ms. Allocated memory was 203.9 MB in the beginning and 411.0 MB in the end (delta: 207.1 MB). Free memory was 103.8 MB in the beginning and 114.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 196.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.1s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2095 SDtfs, 2478 SDslu, 5388 SDs, 0 SdLazy, 3990 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 881 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 575 NumberOfCodeBlocks, 575 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 142779 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...