/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:07,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:07,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:07,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:07,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:07,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:07,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:07,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:07,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:07,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:07,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:07,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:07,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:07,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:07,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:07,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:07,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:07,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:07,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:07,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:07,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:07,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:07,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:07,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:07,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:07,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:07,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:07,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:07,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:07,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:07,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:07,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:07,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:07,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:07,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:07,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:07,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:07,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:07,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:07,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:07,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:07,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:28:07,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:07,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:07,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:07,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:07,906 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:07,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:07,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:07,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:07,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:07,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:07,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:07,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:07,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:07,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:07,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:07,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:07,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:07,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:07,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:07,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:07,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:07,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:07,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:07,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:07,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:07,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:07,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:07,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:07,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:07,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:28:08,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:08,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:08,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:08,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:08,425 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:08,426 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 13:28:08,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec0a78113/29f4735547dd4affa4ba8c6101625acf/FLAGc9410daa4 [2020-09-25 13:28:09,128 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:09,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 13:28:09,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec0a78113/29f4735547dd4affa4ba8c6101625acf/FLAGc9410daa4 [2020-09-25 13:28:09,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec0a78113/29f4735547dd4affa4ba8c6101625acf [2020-09-25 13:28:09,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:09,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:09,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:09,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:09,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:09,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:09" (1/1) ... [2020-09-25 13:28:09,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f7a528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:09, skipping insertion in model container [2020-09-25 13:28:09,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:09" (1/1) ... [2020-09-25 13:28:09,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:09,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:10,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:10,014 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:10,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:10,126 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:10,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10 WrapperNode [2020-09-25 13:28:10,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:10,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:10,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:10,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:10,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (1/1) ... [2020-09-25 13:28:10,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (1/1) ... [2020-09-25 13:28:10,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (1/1) ... [2020-09-25 13:28:10,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (1/1) ... [2020-09-25 13:28:10,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (1/1) ... [2020-09-25 13:28:10,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (1/1) ... [2020-09-25 13:28:10,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (1/1) ... [2020-09-25 13:28:10,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:10,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:10,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:10,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:10,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 13:28:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 13:28:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 13:28:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 13:28:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 13:28:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 13:28:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:10,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:10,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:10,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:10,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:28:10,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:28:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:10,695 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 13:28:11,140 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:11,141 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 13:28:11,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:11 BoogieIcfgContainer [2020-09-25 13:28:11,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:11,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:11,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:11,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:11,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:09" (1/3) ... [2020-09-25 13:28:11,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f2a57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:11, skipping insertion in model container [2020-09-25 13:28:11,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:10" (2/3) ... [2020-09-25 13:28:11,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f2a57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:11, skipping insertion in model container [2020-09-25 13:28:11,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:11" (3/3) ... [2020-09-25 13:28:11,159 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 13:28:11,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:11,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:11,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:11,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:11,234 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:11,234 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:11,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:11,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:11,235 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:11,235 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:11,235 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 13:28:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 13:28:11,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:11,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:11,293 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 13:28:11,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:11,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755429164] [2020-09-25 13:28:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:12,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:12,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:28:12,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:28:12,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-09-25 13:28:12,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:12,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:28:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:28:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:28:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:12,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:12,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:12,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:28:12,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:12,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:12,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:12,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755429164] [2020-09-25 13:28:12,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:12,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:28:12,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201436529] [2020-09-25 13:28:12,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:28:12,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:12,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:28:12,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:28:12,546 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 5 states. [2020-09-25 13:28:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:13,085 INFO L93 Difference]: Finished difference Result 377 states and 443 transitions. [2020-09-25 13:28:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:28:13,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 13:28:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:13,107 INFO L225 Difference]: With dead ends: 377 [2020-09-25 13:28:13,107 INFO L226 Difference]: Without dead ends: 201 [2020-09-25 13:28:13,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-25 13:28:13,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-25 13:28:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 13:28:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-25 13:28:13,187 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 31 [2020-09-25 13:28:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:13,187 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-25 13:28:13,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:28:13,188 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-25 13:28:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:28:13,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:13,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:13,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:13,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:13,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-25 13:28:13,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:13,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130884857] [2020-09-25 13:28:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:13,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:14,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:28:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-25 13:28:14,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:14,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:28:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:28:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:14,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:14,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:14,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:14,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:14,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:14,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:28:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:14,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130884857] [2020-09-25 13:28:14,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:14,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:14,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594800732] [2020-09-25 13:28:14,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:14,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:14,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:14,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:14,378 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 7 states. [2020-09-25 13:28:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:14,987 INFO L93 Difference]: Finished difference Result 277 states and 304 transitions. [2020-09-25 13:28:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:28:14,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-09-25 13:28:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:14,992 INFO L225 Difference]: With dead ends: 277 [2020-09-25 13:28:14,992 INFO L226 Difference]: Without dead ends: 271 [2020-09-25 13:28:14,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:14,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-25 13:28:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 213. [2020-09-25 13:28:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 13:28:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 238 transitions. [2020-09-25 13:28:15,022 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 238 transitions. Word has length 54 [2020-09-25 13:28:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:15,023 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 238 transitions. [2020-09-25 13:28:15,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 238 transitions. [2020-09-25 13:28:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 13:28:15,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:15,026 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:15,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:15,027 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:15,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1812282598, now seen corresponding path program 1 times [2020-09-25 13:28:15,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:15,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234789952] [2020-09-25 13:28:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:15,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:16,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:16,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 13:28:16,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:16,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-09-25 13:28:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:16,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:28:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:28:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:16,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:16,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:16,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234789952] [2020-09-25 13:28:16,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:16,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:16,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462329882] [2020-09-25 13:28:16,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:16,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:16,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:16,511 INFO L87 Difference]: Start difference. First operand 213 states and 238 transitions. Second operand 7 states. [2020-09-25 13:28:16,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:16,965 INFO L93 Difference]: Finished difference Result 280 states and 307 transitions. [2020-09-25 13:28:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:28:16,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 13:28:16,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:16,967 INFO L225 Difference]: With dead ends: 280 [2020-09-25 13:28:16,967 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 13:28:16,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 13:28:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 210. [2020-09-25 13:28:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 13:28:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2020-09-25 13:28:16,984 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 60 [2020-09-25 13:28:16,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:16,984 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2020-09-25 13:28:16,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2020-09-25 13:28:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 13:28:16,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:16,987 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:16,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:16,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:16,988 INFO L82 PathProgramCache]: Analyzing trace with hash -775600822, now seen corresponding path program 1 times [2020-09-25 13:28:16,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:16,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13418773] [2020-09-25 13:28:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:17,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:18,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-09-25 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:28:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:18,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:18,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:18,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:18,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13418773] [2020-09-25 13:28:18,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:18,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:18,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740726649] [2020-09-25 13:28:18,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:18,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:18,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:18,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:18,296 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand 7 states. [2020-09-25 13:28:18,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:18,686 INFO L93 Difference]: Finished difference Result 262 states and 288 transitions. [2020-09-25 13:28:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:28:18,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 13:28:18,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:18,689 INFO L225 Difference]: With dead ends: 262 [2020-09-25 13:28:18,689 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 13:28:18,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 13:28:18,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 205. [2020-09-25 13:28:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 13:28:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 228 transitions. [2020-09-25 13:28:18,702 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 228 transitions. Word has length 60 [2020-09-25 13:28:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:18,702 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 228 transitions. [2020-09-25 13:28:18,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 228 transitions. [2020-09-25 13:28:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 13:28:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:18,705 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:18,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:18,706 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1984006919, now seen corresponding path program 1 times [2020-09-25 13:28:18,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:18,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485571209] [2020-09-25 13:28:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:18,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:23,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 13:28:23,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4744 [2020-09-25 13:28:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:23,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:28:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:28:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:23,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:23,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:23,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:23,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:23,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:23,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:23,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485571209] [2020-09-25 13:28:23,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:23,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:28:23,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183036175] [2020-09-25 13:28:23,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:28:23,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:23,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:28:23,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:23,638 INFO L87 Difference]: Start difference. First operand 205 states and 228 transitions. Second operand 11 states. [2020-09-25 13:28:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:24,239 INFO L93 Difference]: Finished difference Result 286 states and 313 transitions. [2020-09-25 13:28:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:28:24,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-09-25 13:28:24,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:24,244 INFO L225 Difference]: With dead ends: 286 [2020-09-25 13:28:24,244 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 13:28:24,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:28:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 13:28:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 224. [2020-09-25 13:28:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 13:28:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 249 transitions. [2020-09-25 13:28:24,260 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 249 transitions. Word has length 65 [2020-09-25 13:28:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:24,260 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 249 transitions. [2020-09-25 13:28:24,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:28:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 249 transitions. [2020-09-25 13:28:24,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 13:28:24,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:24,262 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:24,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:28:24,262 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:24,263 INFO L82 PathProgramCache]: Analyzing trace with hash -611343915, now seen corresponding path program 1 times [2020-09-25 13:28:24,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:24,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108895063] [2020-09-25 13:28:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:27,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 13:28:27,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3476 [2020-09-25 13:28:27,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:27,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:28:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:28:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:27,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:27,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:27,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:27,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:27,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108895063] [2020-09-25 13:28:27,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:27,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:28:27,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744077089] [2020-09-25 13:28:27,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:28:27,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:27,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:28:27,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:27,908 INFO L87 Difference]: Start difference. First operand 224 states and 249 transitions. Second operand 11 states. [2020-09-25 13:28:28,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:28,552 INFO L93 Difference]: Finished difference Result 302 states and 332 transitions. [2020-09-25 13:28:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:28:28,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-09-25 13:28:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:28,556 INFO L225 Difference]: With dead ends: 302 [2020-09-25 13:28:28,556 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 13:28:28,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:28:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 13:28:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 236. [2020-09-25 13:28:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-25 13:28:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 262 transitions. [2020-09-25 13:28:28,568 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 262 transitions. Word has length 65 [2020-09-25 13:28:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:28,570 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 262 transitions. [2020-09-25 13:28:28,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:28:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 262 transitions. [2020-09-25 13:28:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:28:28,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:28,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:28,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:28:28,573 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1316127329, now seen corresponding path program 1 times [2020-09-25 13:28:28,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:28,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807140451] [2020-09-25 13:28:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:28:33,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:28:33,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:33,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:28:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:28:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:33,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:33,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:33,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:33,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:33,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:33,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:33,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:33,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:33,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807140451] [2020-09-25 13:28:33,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:33,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:28:33,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227201425] [2020-09-25 13:28:33,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:28:33,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:33,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:28:33,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:33,742 INFO L87 Difference]: Start difference. First operand 236 states and 262 transitions. Second operand 9 states. [2020-09-25 13:28:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:34,198 INFO L93 Difference]: Finished difference Result 303 states and 333 transitions. [2020-09-25 13:28:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:28:34,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-09-25 13:28:34,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:34,201 INFO L225 Difference]: With dead ends: 303 [2020-09-25 13:28:34,201 INFO L226 Difference]: Without dead ends: 288 [2020-09-25 13:28:34,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-25 13:28:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 243. [2020-09-25 13:28:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 13:28:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 270 transitions. [2020-09-25 13:28:34,212 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 270 transitions. Word has length 71 [2020-09-25 13:28:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:34,214 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 270 transitions. [2020-09-25 13:28:34,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:28:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 270 transitions. [2020-09-25 13:28:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:28:34,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:34,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:34,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:28:34,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:34,217 INFO L82 PathProgramCache]: Analyzing trace with hash -279445553, now seen corresponding path program 1 times [2020-09-25 13:28:34,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:34,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848735283] [2020-09-25 13:28:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:34,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:28:36,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:36,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2060 [2020-09-25 13:28:36,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:28:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 13:28:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:28:36,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:36,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:36,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848735283] [2020-09-25 13:28:36,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:36,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:28:36,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862161520] [2020-09-25 13:28:36,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:28:36,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:36,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:28:36,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:28:36,647 INFO L87 Difference]: Start difference. First operand 243 states and 270 transitions. Second operand 16 states. [2020-09-25 13:28:38,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:38,077 INFO L93 Difference]: Finished difference Result 306 states and 336 transitions. [2020-09-25 13:28:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:28:38,077 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 13:28:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:38,080 INFO L225 Difference]: With dead ends: 306 [2020-09-25 13:28:38,081 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 13:28:38,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2020-09-25 13:28:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 13:28:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 247. [2020-09-25 13:28:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-25 13:28:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 274 transitions. [2020-09-25 13:28:38,090 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 274 transitions. Word has length 71 [2020-09-25 13:28:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:38,091 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 274 transitions. [2020-09-25 13:28:38,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:28:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 274 transitions. [2020-09-25 13:28:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:28:38,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:38,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:38,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:28:38,093 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1095319059, now seen corresponding path program 1 times [2020-09-25 13:28:38,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:38,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587030587] [2020-09-25 13:28:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:28:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1968 [2020-09-25 13:28:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:40,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:28:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 13:28:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:28:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:40,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:40,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:28:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:40,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:40,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587030587] [2020-09-25 13:28:40,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:40,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:28:40,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712036718] [2020-09-25 13:28:40,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:28:40,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:40,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:28:40,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:28:40,405 INFO L87 Difference]: Start difference. First operand 247 states and 274 transitions. Second operand 16 states. [2020-09-25 13:28:41,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:41,912 INFO L93 Difference]: Finished difference Result 322 states and 352 transitions. [2020-09-25 13:28:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:28:41,913 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 13:28:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:41,915 INFO L225 Difference]: With dead ends: 322 [2020-09-25 13:28:41,915 INFO L226 Difference]: Without dead ends: 316 [2020-09-25 13:28:41,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 13:28:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-09-25 13:28:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 256. [2020-09-25 13:28:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 13:28:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 284 transitions. [2020-09-25 13:28:41,924 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 284 transitions. Word has length 71 [2020-09-25 13:28:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:41,925 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 284 transitions. [2020-09-25 13:28:41,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:28:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 284 transitions. [2020-09-25 13:28:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:28:41,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:41,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:41,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:28:41,927 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:41,927 INFO L82 PathProgramCache]: Analyzing trace with hash -58637283, now seen corresponding path program 1 times [2020-09-25 13:28:41,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:41,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228643232] [2020-09-25 13:28:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:46,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:28:46,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:46,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4512 [2020-09-25 13:28:46,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:46,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:28:46,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 13:28:46,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:28:46,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:46,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:46,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:46,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:46,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:46,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:46,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228643232] [2020-09-25 13:28:46,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:46,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:28:46,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533168106] [2020-09-25 13:28:46,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:28:46,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:46,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:28:46,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:28:46,969 INFO L87 Difference]: Start difference. First operand 256 states and 284 transitions. Second operand 16 states. [2020-09-25 13:28:48,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:48,719 INFO L93 Difference]: Finished difference Result 331 states and 362 transitions. [2020-09-25 13:28:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:28:48,719 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 13:28:48,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:48,722 INFO L225 Difference]: With dead ends: 331 [2020-09-25 13:28:48,722 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 13:28:48,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 13:28:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 13:28:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 256. [2020-09-25 13:28:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 13:28:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 284 transitions. [2020-09-25 13:28:48,732 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 284 transitions. Word has length 71 [2020-09-25 13:28:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:48,733 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 284 transitions. [2020-09-25 13:28:48,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:28:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 284 transitions. [2020-09-25 13:28:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 13:28:48,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:48,735 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:48,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:28:48,735 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:48,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1279761314, now seen corresponding path program 2 times [2020-09-25 13:28:48,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:48,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401747856] [2020-09-25 13:28:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:48,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:53,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:28:53,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:53,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:28:53,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:53,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:28:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 13:28:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:28:53,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:54,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:54,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:54,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:54,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:54,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:54,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:54,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401747856] [2020-09-25 13:28:54,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:54,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 13:28:54,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126493166] [2020-09-25 13:28:54,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 13:28:54,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 13:28:54,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:28:54,148 INFO L87 Difference]: Start difference. First operand 256 states and 284 transitions. Second operand 18 states.