/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=0.1 --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-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:03:51,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:03:51,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:03:51,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:03:51,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:03:51,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:03:51,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:03:51,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:03:51,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:03:51,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:03:51,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:03:51,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:03:51,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:03:51,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:03:51,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:03:51,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:03:51,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:03:51,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:03:51,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:03:51,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:03:51,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:03:51,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:03:51,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:03:51,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:03:51,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:03:51,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:03:51,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:03:51,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:03:51,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:03:51,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:03:51,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:03:51,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:03:51,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:03:51,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:03:51,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:03:51,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:03:51,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:03:51,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:03:51,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:03:51,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:03:51,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:03:51,201 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 10:03:51,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:03:51,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:03:51,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:03:51,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:03:51,251 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:03:51,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:03:51,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:03:51,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:03:51,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:03:51,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:03:51,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:03:51,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:03:51,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:03:51,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:03:51,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:03:51,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:03:51,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:03:51,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:03:51,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:03:51,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:03:51,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:03:51,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:03:51,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:03:51,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:03:51,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:03:51,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:03:51,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:03:51,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:03:51,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:03:51,257 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:03:51,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:03:51,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:03:51,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:03:51,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:03:51,770 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:03:51,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 10:03:51,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08db28236/0af635de534748efbb9ceb189c53fd9e/FLAG31f8f5383 [2020-09-25 10:03:52,498 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:03:52,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 10:03:52,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08db28236/0af635de534748efbb9ceb189c53fd9e/FLAG31f8f5383 [2020-09-25 10:03:52,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08db28236/0af635de534748efbb9ceb189c53fd9e [2020-09-25 10:03:52,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:03:52,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:03:52,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:03:52,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:03:52,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:03:52,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:03:52" (1/1) ... [2020-09-25 10:03:52,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ae2273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:52, skipping insertion in model container [2020-09-25 10:03:52,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:03:52" (1/1) ... [2020-09-25 10:03:52,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:03:52,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:03:53,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:03:53,383 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:03:53,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:03:53,530 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:03:53,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53 WrapperNode [2020-09-25 10:03:53,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:03:53,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:03:53,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:03:53,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:03:53,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (1/1) ... [2020-09-25 10:03:53,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (1/1) ... [2020-09-25 10:03:53,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (1/1) ... [2020-09-25 10:03:53,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (1/1) ... [2020-09-25 10:03:53,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (1/1) ... [2020-09-25 10:03:53,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (1/1) ... [2020-09-25 10:03:53,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (1/1) ... [2020-09-25 10:03:53,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:03:53,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:03:53,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:03:53,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:03:53,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (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 10:03:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:03:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:03:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:03:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 10:03:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 10:03:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 10:03:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 10:03:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 10:03:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-25 10:03:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-25 10:03:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:03:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:03:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:03:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:03:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:03:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:03:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:03:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:03:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:03:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:03:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:03:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:03:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:03:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:03:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:03:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:03:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:03:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:03:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:03:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 10:03:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 10:03:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 10:03:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 10:03:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 10:03:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:03:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:03:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:03:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:03:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:03:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:03:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:03:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:03:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:03:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:03:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:03:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:03:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:03:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:03:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:03:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:03:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:03:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:03:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:03:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:03:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:03:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:03:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:03:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:03:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:03:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:03:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:03:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:03:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:03:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:03:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:03:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:03:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:03:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:03:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:03:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:03:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:03:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:03:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:03:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:03:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:03:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:03:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:03:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:03:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:03:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:03:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:03:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:03:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:03:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:03:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:03:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:03:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:03:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:03:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:03:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:03:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:03:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:03:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:03:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:03:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:03:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:03:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:03:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:03:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:03:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:03:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:03:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:03:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:03:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:03:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:03:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:03:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:03:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:03:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:03:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:03:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:03:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:03:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:03:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:03:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:03:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:03:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:03:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:03:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:03:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:03:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-25 10:03:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:03:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:03:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-25 10:03:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:03:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:03:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:03:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:03:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:03:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:03:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:03:54,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:03:54,298 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 10:03:54,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:03:54 BoogieIcfgContainer [2020-09-25 10:03:54,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:03:54,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:03:54,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:03:54,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:03:54,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:03:52" (1/3) ... [2020-09-25 10:03:54,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bee73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:03:54, skipping insertion in model container [2020-09-25 10:03:54,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:53" (2/3) ... [2020-09-25 10:03:54,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bee73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:03:54, skipping insertion in model container [2020-09-25 10:03:54,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:03:54" (3/3) ... [2020-09-25 10:03:54,314 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-25 10:03:54,326 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:03:54,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:03:54,363 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:03:54,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:03:54,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:03:54,398 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:03:54,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:03:54,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:03:54,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:03:54,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:03:54,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:03:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 10:03:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 10:03:54,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:54,441 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:03:54,441 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:54,451 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-25 10:03:54,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:54,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464566396] [2020-09-25 10:03:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:55,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:59,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:03:59,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:03:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:03:59,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:59,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:03:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:03:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:03:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:03:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:59,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:59,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:03:59,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:03:59,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:59,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:59,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:59,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:03:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:00,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:00,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:00,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 10:04:00,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:00,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:04:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:04:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:00,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:00,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:00,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:00,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 10:04:00,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:00,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:04:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:04:00,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 10:04:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:00,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:00,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:00,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:04:00,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:00,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:04:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 10:04:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:00,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:04:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:00,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:04:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:00,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:00,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 10:04:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:00,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:00,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:04:00,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:04:00,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:04:00,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:00,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 10:04:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 10:04:00,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464566396] [2020-09-25 10:04:00,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:04:00,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:04:00,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433560874] [2020-09-25 10:04:00,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:04:00,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:00,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:04:00,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:04:00,405 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-09-25 10:04:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:01,098 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-09-25 10:04:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:04:01,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-25 10:04:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:01,114 INFO L225 Difference]: With dead ends: 187 [2020-09-25 10:04:01,114 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 10:04:01,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:04:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 10:04:01,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-25 10:04:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 10:04:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-25 10:04:01,187 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-09-25 10:04:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:01,187 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-25 10:04:01,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:04:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-25 10:04:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 10:04:01,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:01,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:01,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:04:01,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:01,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-25 10:04:01,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:01,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432025202] [2020-09-25 10:04:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:02,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 10:04:02,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:04:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-09-25 10:04:02,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:02,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:04:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 10:04:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:04:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:02,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:04:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:04:02,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:02,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:02,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:04:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:02,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:02,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:02,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:04:02,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:02,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:04:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:02,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:02,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:02,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:04:02,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:02,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:02,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 10:04:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:02,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:02,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:04:02,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:02,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:02,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 10:04:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:02,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:02,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 10:04:02,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:02,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:04:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:02,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:04:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:02,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:02,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:02,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:04:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 10:04:02,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:02,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 10:04:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:04:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 10:04:02,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432025202] [2020-09-25 10:04:02,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:04:02,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:04:02,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091655397] [2020-09-25 10:04:02,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:04:02,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:02,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:04:02,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:04:02,606 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-25 10:04:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:03,280 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-25 10:04:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:04:03,283 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 10:04:03,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:03,288 INFO L225 Difference]: With dead ends: 113 [2020-09-25 10:04:03,288 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 10:04:03,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:04:03,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 10:04:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-25 10:04:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 10:04:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 10:04:03,316 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-25 10:04:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:03,317 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 10:04:03,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:04:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 10:04:03,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 10:04:03,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:03,324 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:03,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:04:03,324 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:03,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-25 10:04:03,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:03,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143085826] [2020-09-25 10:04:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:04,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:04,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 10:04:04,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:04,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-09-25 10:04:04,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:04,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:04:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 10:04:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:04:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:04,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:04,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:04:04,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:04,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:04:04,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:04,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:04,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:04:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:04,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:04,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:04:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:04,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:04:04,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:04:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:04,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:04,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:04,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:04:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:04,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 10:04:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:04,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:04,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:04,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:04:04,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:04,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 10:04:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:04,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:04,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:04,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 10:04:04,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:04,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:04:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:04:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:04,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:04:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:04,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:04,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:04:04,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 10:04:04,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:04,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:04:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:04:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:04:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 10:04:04,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143085826] [2020-09-25 10:04:04,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:04:04,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 10:04:04,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492775240] [2020-09-25 10:04:04,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:04:04,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:04,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:04:04,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:04:04,970 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-25 10:04:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:05,822 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-25 10:04:05,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:04:05,824 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 10:04:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:05,828 INFO L225 Difference]: With dead ends: 95 [2020-09-25 10:04:05,828 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 10:04:05,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:04:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 10:04:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 10:04:05,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 10:04:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 10:04:05,848 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-25 10:04:05,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:05,849 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 10:04:05,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:04:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 10:04:05,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 10:04:05,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:05,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:05,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:04:05,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:05,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:05,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-25 10:04:05,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:05,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129675113] [2020-09-25 10:04:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:10,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:10,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:04:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:04:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-25 10:04:10,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:10,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 10:04:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 10:04:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 10:04:10,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:11,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:11,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:11,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:11,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:04:11,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:04:11,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:11,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:11,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:04:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:11,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:11,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:11,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:11,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:04:11,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:11,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:11,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:04:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:11,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:11,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:11,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:04:11,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:11,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:11,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 10:04:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:11,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:11,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:11,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 10:04:11,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:11,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:04:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:04:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:11,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 10:04:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:11,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:11,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:11,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:11,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 10:04:11,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:11,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:11,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:04:11,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:04:11,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:04:11,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:04:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:11,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:11,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:04:11,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 10:04:11,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:11,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:04:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:04:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 39 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 10:04:12,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129675113] [2020-09-25 10:04:12,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:04:12,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 10:04:12,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490059082] [2020-09-25 10:04:12,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 10:04:12,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:12,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 10:04:12,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:04:12,214 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 26 states. [2020-09-25 10:04:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:14,787 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2020-09-25 10:04:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:04:14,787 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 99 [2020-09-25 10:04:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:14,791 INFO L225 Difference]: With dead ends: 113 [2020-09-25 10:04:14,791 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 10:04:14,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=247, Invalid=2203, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 10:04:14,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 10:04:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-09-25 10:04:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 10:04:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-09-25 10:04:14,804 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 99 [2020-09-25 10:04:14,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:14,804 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-09-25 10:04:14,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 10:04:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-09-25 10:04:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 10:04:14,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:14,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-09-25 10:04:14,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:04:14,807 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash -891812434, now seen corresponding path program 2 times [2020-09-25 10:04:14,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:14,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256849804] [2020-09-25 10:04:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:14,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:14,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:19,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:19,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 10:04:19,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:04:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:04:19,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:19,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 10:04:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 10:04:19,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 10:04:19,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:19,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:19,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:19,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:19,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:04:19,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:04:19,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:19,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:04:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:20,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:20,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:20,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:04:20,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:20,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:04:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:20,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:20,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:20,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 10:04:20,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:20,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:04:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:04:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 10:04:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:20,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:20,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:20,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 10:04:20,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:20,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:04:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:04:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:04:20,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:04:20,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 10:04:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:20,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:20,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:20,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 10:04:20,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:20,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:04:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:04:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:04:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:04:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:21,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:21,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 10:04:21,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:04:21,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 10:04:21,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:21,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:04:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 10:04:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:04:21,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:04:21,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256849804] [2020-09-25 10:04:21,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:04:21,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 10:04:21,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34805342] [2020-09-25 10:04:21,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 10:04:21,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:21,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 10:04:21,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:04:21,505 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 27 states. [2020-09-25 10:04:24,042 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-09-25 10:04:24,261 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-09-25 10:04:24,413 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-09-25 10:04:24,557 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-09-25 10:04:24,725 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-09-25 10:04:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:25,761 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2020-09-25 10:04:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 10:04:25,762 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 107 [2020-09-25 10:04:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:25,764 INFO L225 Difference]: With dead ends: 161 [2020-09-25 10:04:25,764 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 10:04:25,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=578, Invalid=3454, Unknown=0, NotChecked=0, Total=4032 [2020-09-25 10:04:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 10:04:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2020-09-25 10:04:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 10:04:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-09-25 10:04:25,800 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 107 [2020-09-25 10:04:25,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:25,801 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-09-25 10:04:25,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 10:04:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-09-25 10:04:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 10:04:25,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:25,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:04:25,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:04:25,803 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:25,809 INFO L82 PathProgramCache]: Analyzing trace with hash -936170188, now seen corresponding path program 1 times [2020-09-25 10:04:25,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:25,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097499353] [2020-09-25 10:04:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:29,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:29,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 10:04:29,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:29,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3512 [2020-09-25 10:04:29,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:29,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:29,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 10:04:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 10:04:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:04:29,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:04:29,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:04:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:29,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:29,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:04:29,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:29,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:04:29,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:29,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:04:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:29,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:29,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:04:29,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:29,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:04:29,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:29,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:04:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:04:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:04:29,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:04:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:29,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:29,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:29,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 10:04:29,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:29,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:04:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:04:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:04:29,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:29,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 10:04:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:30,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:30,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:30,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 10:04:30,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:30,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:04:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:04:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:04:30,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 10:04:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:30,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:30,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:04:30,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:30,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 10:04:30,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:30,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:30,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:04:30,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:04:30,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:04:30,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:04:31,495 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-09-25 10:04:31,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:04:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:04:31,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 10:04:31,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:04:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 10:04:31,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:04:31,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:04:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:04:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:04:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 10:04:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:04:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:04:32,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097499353] [2020-09-25 10:04:32,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:04:32,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-25 10:04:32,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824527879] [2020-09-25 10:04:32,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-25 10:04:32,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:04:32,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-25 10:04:32,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 10:04:32,421 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 34 states. [2020-09-25 10:04:33,764 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-09-25 10:04:34,033 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2020-09-25 10:04:34,285 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 10:04:34,859 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-09-25 10:04:35,051 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-09-25 10:04:35,840 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-09-25 10:04:37,655 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-25 10:04:37,871 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-25 10:04:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:04:38,653 INFO L93 Difference]: Finished difference Result 144 states and 148 transitions. [2020-09-25 10:04:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-25 10:04:38,654 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 111 [2020-09-25 10:04:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:04:38,657 INFO L225 Difference]: With dead ends: 144 [2020-09-25 10:04:38,657 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 10:04:38,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=493, Invalid=4199, Unknown=0, NotChecked=0, Total=4692 [2020-09-25 10:04:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 10:04:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 112. [2020-09-25 10:04:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 10:04:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2020-09-25 10:04:38,671 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 111 [2020-09-25 10:04:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:04:38,672 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2020-09-25 10:04:38,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-25 10:04:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2020-09-25 10:04:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 10:04:38,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:04:38,674 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:04:38,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:04:38,674 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:04:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:04:38,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1616055414, now seen corresponding path program 3 times [2020-09-25 10:04:38,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:04:38,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19310664] [2020-09-25 10:04:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:04:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:04:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:04:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking...