/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:53:44,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:53:44,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:53:44,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:53:44,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:53:44,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:53:44,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:53:44,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:53:44,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:53:44,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:53:44,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:53:44,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:53:44,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:53:44,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:53:44,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:53:44,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:53:44,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:53:44,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:53:44,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:53:44,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:53:44,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:53:44,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:53:44,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:53:44,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:53:44,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:53:44,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:53:44,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:53:44,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:53:44,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:53:44,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:53:44,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:53:44,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:53:44,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:53:44,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:53:44,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:53:44,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:53:44,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:53:44,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:53:44,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:53:44,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:53:44,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:53:44,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:53:44,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:53:44,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:53:44,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:53:44,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:53:44,997 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:53:44,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:53:44,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:53:44,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:53:44,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:53:44,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:53:44,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:53:44,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:53:44,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:53:44,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:53:44,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:53:44,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:53:44,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:53:45,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:53:45,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:53:45,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:53:45,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:53:45,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:53:45,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:53:45,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:53:45,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:53:45,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:53:45,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:53:45,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:53:45,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:53:45,004 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:53:45,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:53:45,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:53:45,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:53:45,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:53:45,346 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:53:45,347 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_insert_unequal.i [2020-10-12 15:53:45,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e398e7d17/808ba337ed464f01ad10cb819c865fe8/FLAG3d63a3858 [2020-10-12 15:53:45,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:53:45,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_insert_unequal.i [2020-10-12 15:53:45,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e398e7d17/808ba337ed464f01ad10cb819c865fe8/FLAG3d63a3858 [2020-10-12 15:53:46,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e398e7d17/808ba337ed464f01ad10cb819c865fe8 [2020-10-12 15:53:46,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:53:46,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:53:46,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:53:46,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:53:46,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:53:46,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:53:46" (1/1) ... [2020-10-12 15:53:46,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f40c1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:46, skipping insertion in model container [2020-10-12 15:53:46,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:53:46" (1/1) ... [2020-10-12 15:53:46,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:53:46,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:53:46,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:53:46,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:53:46,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:53:47,056 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:53:47,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47 WrapperNode [2020-10-12 15:53:47,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:53:47,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:53:47,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:53:47,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:53:47,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (1/1) ... [2020-10-12 15:53:47,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (1/1) ... [2020-10-12 15:53:47,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (1/1) ... [2020-10-12 15:53:47,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (1/1) ... [2020-10-12 15:53:47,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (1/1) ... [2020-10-12 15:53:47,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (1/1) ... [2020-10-12 15:53:47,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (1/1) ... [2020-10-12 15:53:47,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:53:47,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:53:47,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:53:47,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:53:47,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:53:47,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:53:47,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:53:47,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:53:47,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:53:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:53:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-12 15:53:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-12 15:53:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-12 15:53:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_insert [2020-10-12 15:53:47,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:53:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:53:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:53:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:53:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:53:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:53:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:53:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:53:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:53:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:53:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:53:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:53:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:53:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:53:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:53:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:53:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:53:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:53:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:53:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:53:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:53:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:53:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:53:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:53:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:53:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:53:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:53:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:53:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:53:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:53:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:53:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:53:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:53:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:53:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:53:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:53:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:53:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:53:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:53:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:53:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:53:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:53:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:53:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:53:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:53:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:53:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:53:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:53:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:53:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:53:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:53:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:53:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:53:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:53:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:53:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:53:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:53:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:53:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:53:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:53:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:53:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:53:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:53:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:53:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:53:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:53:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:53:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:53:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:53:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:53:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:53:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:53:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:53:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:53:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:53:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:53:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:53:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:53:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:53:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:53:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:53:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:53:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:53:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:53:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:53:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:53:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:53:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:53:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:53:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:53:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:53:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-12 15:53:47,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:53:47,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:53:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:53:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-12 15:53:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-12 15:53:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:53:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:53:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_insert [2020-10-12 15:53:47,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:53:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:53:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:53:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:53:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:53:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:53:47,694 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:53:47,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:53:47,945 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-12 15:53:47,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:53:47 BoogieIcfgContainer [2020-10-12 15:53:47,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:53:47,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:53:47,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:53:47,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:53:47,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:53:46" (1/3) ... [2020-10-12 15:53:47,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9b155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:53:47, skipping insertion in model container [2020-10-12 15:53:47,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:53:47" (2/3) ... [2020-10-12 15:53:47,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9b155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:53:47, skipping insertion in model container [2020-10-12 15:53:47,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:53:47" (3/3) ... [2020-10-12 15:53:47,959 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_insert_unequal.i [2020-10-12 15:53:47,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:53:47,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:53:47,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:53:48,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:53:48,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:53:48,022 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:53:48,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:53:48,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:53:48,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:53:48,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:53:48,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:53:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-12 15:53:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:53:48,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:48,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:53:48,055 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1696262195, now seen corresponding path program 1 times [2020-10-12 15:53:48,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:48,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225124347] [2020-10-12 15:53:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:48,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:53:48,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:53:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-12 15:53:48,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 15:53:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:53:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:53:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:48,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:48,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:53:48,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:48,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:53:48,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:53:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:53:48,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:48,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:48,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:48,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:48,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:53:48,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:53:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:53:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:53:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 15:53:49,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:53:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:53:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:49,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:49,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:53:49,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:53:49,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225124347] [2020-10-12 15:53:49,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:53:49,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:53:49,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044529156] [2020-10-12 15:53:49,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:53:49,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:53:49,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:53:49,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:53:49,127 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 5 states. [2020-10-12 15:53:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:53:49,446 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2020-10-12 15:53:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:53:49,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-12 15:53:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:53:49,461 INFO L225 Difference]: With dead ends: 117 [2020-10-12 15:53:49,461 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:53:49,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:53:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:53:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-12 15:53:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:53:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-12 15:53:49,519 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 37 [2020-10-12 15:53:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:53:49,521 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-12 15:53:49,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:53:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-12 15:53:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:53:49,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:49,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:53:49,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:53:49,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:49,526 INFO L82 PathProgramCache]: Analyzing trace with hash -2047030169, now seen corresponding path program 1 times [2020-10-12 15:53:49,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:49,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884824935] [2020-10-12 15:53:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:49,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:49,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:51,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:51,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:53:51,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:53:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2219 [2020-10-12 15:53:51,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 15:53:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:53:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:53:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:51,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:51,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:51,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:51,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:51,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:51,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:53:51,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:51,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:51,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:51,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:51,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:52,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:52,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:53:52,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:52,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 15:53:52,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:53:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:53:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:52,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:52,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:52,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 15:53:52,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:53:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:53:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:53:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:52,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:52,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:53:52,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 15:53:52,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:53:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:53:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:53,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 15:53:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:53:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:53:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:53,710 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-10-12 15:53:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:53:53,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884824935] [2020-10-12 15:53:53,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:53:53,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:53:53,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662087282] [2020-10-12 15:53:53,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:53:53,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:53:53,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:53:53,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:53:53,739 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 23 states. [2020-10-12 15:53:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:53:55,566 INFO L93 Difference]: Finished difference Result 81 states and 104 transitions. [2020-10-12 15:53:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:53:55,568 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 38 [2020-10-12 15:53:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:53:55,571 INFO L225 Difference]: With dead ends: 81 [2020-10-12 15:53:55,571 INFO L226 Difference]: Without dead ends: 79 [2020-10-12 15:53:55,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 15:53:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-12 15:53:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2020-10-12 15:53:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 15:53:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-12 15:53:55,599 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 38 [2020-10-12 15:53:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:53:55,600 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-12 15:53:55,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:53:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-12 15:53:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:53:55,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:55,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:53:55,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:53:55,609 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:55,609 INFO L82 PathProgramCache]: Analyzing trace with hash 202833559, now seen corresponding path program 2 times [2020-10-12 15:53:55,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:55,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452358977] [2020-10-12 15:53:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:55,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:56,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:53:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:53:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-12 15:53:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:53:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:53:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:53:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:56,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:56,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:56,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:56,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:53:56,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:56,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:56,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:53:56,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:53:56,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:53:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:53:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:56,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:56,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:56,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:53:56,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:53:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:53:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:56,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:56,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:56,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:53:56,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:53:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:53:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:53:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:53:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:56,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:56,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:56,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:56,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:53:56,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:53:56,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:53:56,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452358977] [2020-10-12 15:53:56,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:53:56,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:53:56,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206052230] [2020-10-12 15:53:56,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:53:56,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:53:56,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:53:56,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:53:56,594 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 10 states. [2020-10-12 15:53:56,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:53:56,991 INFO L93 Difference]: Finished difference Result 95 states and 122 transitions. [2020-10-12 15:53:56,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:53:56,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-12 15:53:56,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:53:56,994 INFO L225 Difference]: With dead ends: 95 [2020-10-12 15:53:56,994 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 15:53:56,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:53:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 15:53:57,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-10-12 15:53:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 15:53:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-10-12 15:53:57,008 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 39 [2020-10-12 15:53:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:53:57,008 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-10-12 15:53:57,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:53:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-10-12 15:53:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:53:57,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:57,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:53:57,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:53:57,011 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:57,011 INFO L82 PathProgramCache]: Analyzing trace with hash -399576835, now seen corresponding path program 1 times [2020-10-12 15:53:57,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:57,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349506975] [2020-10-12 15:53:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:57,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:57,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:53:57,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:53:57,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-12 15:53:57,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:53:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:53:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:53:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:57,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:57,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:57,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:53:57,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:57,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:57,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:57,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:53:57,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:53:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:53:57,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:53:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:53:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:53:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:57,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:57,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:57,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:57,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:53:57,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:53:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:57,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:53:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:57,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:57,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:53:57,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 15:53:57,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:53:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:53:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:53:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:58,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:58,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:58,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:58,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:53:58,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:53:58,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:53:58,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349506975] [2020-10-12 15:53:58,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:53:58,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 15:53:58,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13638651] [2020-10-12 15:53:58,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:53:58,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:53:58,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:53:58,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:53:58,055 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 10 states. [2020-10-12 15:53:58,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:53:58,313 INFO L93 Difference]: Finished difference Result 94 states and 116 transitions. [2020-10-12 15:53:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:53:58,313 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-12 15:53:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:53:58,314 INFO L225 Difference]: With dead ends: 94 [2020-10-12 15:53:58,314 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:53:58,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:53:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:53:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-12 15:53:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:53:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-10-12 15:53:58,321 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 39 [2020-10-12 15:53:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:53:58,321 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-10-12 15:53:58,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:53:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-10-12 15:53:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:53:58,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:58,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:53:58,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:53:58,322 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:58,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash 651664031, now seen corresponding path program 1 times [2020-10-12 15:53:58,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:58,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209381078] [2020-10-12 15:53:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:59,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:59,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:53:59,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:59,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-10-12 15:53:59,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 15:53:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:53:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 15:53:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:59,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:59,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:59,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:53:59,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:59,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:59,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:59,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:00,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:00,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:54:00,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-12 15:54:00,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:54:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:54:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:00,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:00,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:00,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:00,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:00,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:54:00,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:54:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:54:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:00,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:54:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:00,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:54:00,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:54:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:54:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:00,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:54:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:00,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:00,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:00,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:54:00,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 15:54:00,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:54:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:54:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:00,946 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-12 15:54:01,150 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-12 15:54:01,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:01,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:01,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:01,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:01,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:01,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 15:54:01,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:01,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:54:01,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:01,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:02,076 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-10-12 15:54:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:54:02,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209381078] [2020-10-12 15:54:02,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:02,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 15:54:02,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747589547] [2020-10-12 15:54:02,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 15:54:02,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:02,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 15:54:02,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:54:02,112 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 27 states. [2020-10-12 15:54:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:03,955 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2020-10-12 15:54:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:54:03,956 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 46 [2020-10-12 15:54:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:03,958 INFO L225 Difference]: With dead ends: 73 [2020-10-12 15:54:03,958 INFO L226 Difference]: Without dead ends: 71 [2020-10-12 15:54:03,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:54:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-12 15:54:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-10-12 15:54:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:54:03,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-10-12 15:54:03,969 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 46 [2020-10-12 15:54:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:03,969 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-10-12 15:54:03,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 15:54:03,970 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-10-12 15:54:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 15:54:03,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:03,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:54:03,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:54:03,971 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:03,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:03,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2036992161, now seen corresponding path program 2 times [2020-10-12 15:54:03,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:03,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629240671] [2020-10-12 15:54:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:04,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 15:54:04,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-12 15:54:04,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:54:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:54:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:54:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:04,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:04,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:04,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:54:04,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:04,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:04,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:54:04,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 15:54:04,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:54:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:54:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:04,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:04,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:04,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:04,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:54:04,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:54:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:54:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:54:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:04,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:04,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:04,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:04,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:54:04,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:54:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:54:04,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:54:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:04,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:54:04,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 15:54:04,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:54:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:54:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:54:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:04,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:04,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:04,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:04,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:54:04,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:54:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:54:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 15:54:04,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629240671] [2020-10-12 15:54:04,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:04,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:54:04,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108482205] [2020-10-12 15:54:04,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:54:04,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:04,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:54:04,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:54:04,835 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 12 states. [2020-10-12 15:54:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:05,187 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2020-10-12 15:54:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:54:05,188 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-12 15:54:05,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:05,189 INFO L225 Difference]: With dead ends: 79 [2020-10-12 15:54:05,189 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 15:54:05,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:54:05,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 15:54:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-10-12 15:54:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 15:54:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-12 15:54:05,199 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 47 [2020-10-12 15:54:05,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:05,199 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-12 15:54:05,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:54:05,199 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-12 15:54:05,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:54:05,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:05,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:54:05,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:54:05,201 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:05,201 INFO L82 PathProgramCache]: Analyzing trace with hash -88398587, now seen corresponding path program 1 times [2020-10-12 15:54:05,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:05,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062168116] [2020-10-12 15:54:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:05,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:06,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:06,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 15:54:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:54:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1759 [2020-10-12 15:54:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:54:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:54:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:07,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:07,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:07,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:07,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:54:07,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:07,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:07,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:07,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:07,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:54:07,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 15:54:07,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:54:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:07,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:07,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:07,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:54:07,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:07,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:07,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:54:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:07,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:07,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:07,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:54:07,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:54:07,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:54:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:07,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:07,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:54:07,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 15:54:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:54:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:54:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:07,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:07,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:07,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:07,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:07,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:54:07,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:54:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:07,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:54:07,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062168116] [2020-10-12 15:54:07,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:07,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:54:07,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956139677] [2020-10-12 15:54:07,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:54:07,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:54:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:54:07,863 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 19 states. [2020-10-12 15:54:08,631 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-12 15:54:08,810 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-12 15:54:09,035 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-12 15:54:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:09,290 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-10-12 15:54:09,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:54:09,290 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-12 15:54:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:09,292 INFO L225 Difference]: With dead ends: 68 [2020-10-12 15:54:09,292 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:54:09,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:54:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:54:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-12 15:54:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:54:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-12 15:54:09,302 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 48 [2020-10-12 15:54:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:09,303 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-12 15:54:09,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:54:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-12 15:54:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:54:09,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:09,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:54:09,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:54:09,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:09,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:09,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1736587511, now seen corresponding path program 1 times [2020-10-12 15:54:09,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:09,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050899515] [2020-10-12 15:54:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:10,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:10,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:54:10,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:10,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-12 15:54:10,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:10,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 15:54:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:54:10,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:10,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:10,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:10,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:54:10,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:10,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:10,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:10,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:54:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 15:54:10,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:10,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:54:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:11,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:11,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:11,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:11,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:54:11,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:11,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:11,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:54:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:11,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:11,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:54:11,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:54:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:54:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:11,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:11,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:54:11,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:11,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 15:54:11,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:11,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:54:11,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:11,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:54:11,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:11,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:11,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:11,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:11,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 15:54:11,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:11,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:54:11,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050899515] [2020-10-12 15:54:11,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:11,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:54:11,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561134640] [2020-10-12 15:54:11,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:54:11,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:11,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:54:11,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:54:11,884 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 23 states. [2020-10-12 15:54:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:13,048 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-10-12 15:54:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:54:13,049 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-10-12 15:54:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:13,051 INFO L225 Difference]: With dead ends: 59 [2020-10-12 15:54:13,051 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 15:54:13,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:54:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 15:54:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-10-12 15:54:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 15:54:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-12 15:54:13,062 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 50 [2020-10-12 15:54:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:13,062 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-12 15:54:13,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:54:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-12 15:54:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:54:13,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:13,063 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:54:13,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:54:13,064 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1736631221, now seen corresponding path program 1 times [2020-10-12 15:54:13,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:13,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568046477] [2020-10-12 15:54:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:14,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:54:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:54:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1865 [2020-10-12 15:54:14,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:54:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:54:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 15:54:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:15,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:15,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:15,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:15,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:15,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:54:15,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:15,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:15,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:15,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:15,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:54:15,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:15,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 15:54:15,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:54:15,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:54:15,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:15,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:15,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:15,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:15,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:54:15,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:54:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:54:15,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:15,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:54:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:15,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:15,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:15,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:54:15,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:54:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:54:15,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:54:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:15,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:15,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:15,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:54:15,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:15,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 15:54:15,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:15,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:54:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:54:15,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:15,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:15,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:15,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:15,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:54:15,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:54:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:54:15,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 15:54:15,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568046477] [2020-10-12 15:54:15,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:15,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:54:15,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748734939] [2020-10-12 15:54:15,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:54:15,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:15,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:54:15,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:54:15,437 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 15 states. [2020-10-12 15:54:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:15,991 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-10-12 15:54:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:54:15,992 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-12 15:54:15,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:15,993 INFO L225 Difference]: With dead ends: 59 [2020-10-12 15:54:15,993 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 15:54:15,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:54:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 15:54:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-12 15:54:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 15:54:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-12 15:54:16,016 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 50 [2020-10-12 15:54:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:16,017 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-12 15:54:16,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:54:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-12 15:54:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:54:16,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:16,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:54:16,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:54:16,019 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:16,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:16,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1881639886, now seen corresponding path program 1 times [2020-10-12 15:54:16,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:16,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760820335] [2020-10-12 15:54:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:21,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:21,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:54:21,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:54:21,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 15:54:21,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 15:54:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:54:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:21,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:21,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:21,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:54:21,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:21,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:21,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:54:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 15:54:21,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:54:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:54:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:22,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:22,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:22,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:22,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:22,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 15:54:22,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:54:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:54:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:22,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:54:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:22,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:22,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:22,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:54:22,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:54:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:54:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:22,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:22,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:54:22,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 15:54:22,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:54:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:54:22,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:38,573 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74