/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=0.5 --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 14:34:08,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:34:08,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:34:08,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:34:08,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:34:08,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:34:08,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:34:08,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:34:08,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:34:08,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:34:08,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:34:08,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:34:08,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:34:08,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:34:08,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:34:08,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:34:08,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:34:08,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:34:08,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:34:08,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:34:08,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:34:08,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:34:08,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:34:08,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:34:08,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:34:08,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:34:08,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:34:08,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:34:08,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:34:08,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:34:08,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:34:08,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:34:08,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:34:08,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:34:08,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:34:08,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:34:08,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:34:08,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:34:08,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:34:08,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:34:08,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:34:08,239 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 14:34:08,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:34:08,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:34:08,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:34:08,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:34:08,291 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:34:08,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:34:08,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:34:08,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:34:08,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:34:08,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:34:08,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:34:08,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:34:08,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:34:08,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:34:08,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:34:08,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:34:08,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:34:08,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:34:08,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:34:08,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:34:08,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:34:08,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:34:08,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:34:08,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:34:08,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:34:08,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:34:08,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:34:08,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:34:08,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:34:08,299 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:34:08,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:34:08,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:34:08,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:34:08,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:34:08,806 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:34:08,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 14:34:08,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b3182993/4fc0e1ea4f3547cf871dc383ee7ae988/FLAGe442cf435 [2020-09-25 14:34:09,542 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:34:09,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 14:34:09,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b3182993/4fc0e1ea4f3547cf871dc383ee7ae988/FLAGe442cf435 [2020-09-25 14:34:09,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b3182993/4fc0e1ea4f3547cf871dc383ee7ae988 [2020-09-25 14:34:09,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:34:09,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:34:09,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:34:09,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:34:09,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:34:09,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:34:09" (1/1) ... [2020-09-25 14:34:09,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6fb2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:09, skipping insertion in model container [2020-09-25 14:34:09,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:34:09" (1/1) ... [2020-09-25 14:34:09,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:34:09,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:34:10,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:34:10,469 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:34:10,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:34:10,574 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:34:10,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10 WrapperNode [2020-09-25 14:34:10,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:34:10,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:34:10,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:34:10,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:34:10,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (1/1) ... [2020-09-25 14:34:10,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (1/1) ... [2020-09-25 14:34:10,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (1/1) ... [2020-09-25 14:34:10,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (1/1) ... [2020-09-25 14:34:10,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (1/1) ... [2020-09-25 14:34:10,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (1/1) ... [2020-09-25 14:34:10,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (1/1) ... [2020-09-25 14:34:10,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:34:10,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:34:10,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:34:10,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:34:10,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:34:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:34:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:34:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:34:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 14:34:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 14:34:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 14:34:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 14:34:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 14:34:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-25 14:34:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-25 14:34:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:34:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:34:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:34:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:34:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:34:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:34:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:34:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:34:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:34:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:34:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:34:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:34:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:34:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:34:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:34:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:34:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:34:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:34:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:34:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 14:34:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 14:34:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 14:34:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 14:34:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 14:34:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:34:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:34:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:34:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:34:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:34:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:34:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:34:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:34:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:34:10,741 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:34:10,741 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:34:10,741 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:34:10,741 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:34:10,741 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:34:10,741 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:34:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:34:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:34:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:34:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:34:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:34:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:34:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:34:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:34:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:34:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:34:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:34:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:34:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:34:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:34:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:34:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:34:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:34:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:34:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:34:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:34:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:34:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:34:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:34:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:34:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:34:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:34:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:34:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:34:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:34:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:34:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:34:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:34:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:34:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:34:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:34:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:34:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:34:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:34:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:34:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:34:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:34:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:34:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:34:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:34:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:34:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:34:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:34:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:34:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:34:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:34:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:34:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:34:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:34:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:34:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:34:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:34:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:34:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:34:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:34:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:34:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:34:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:34:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:34:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:34:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:34:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:34:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:34:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:34:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:34:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:34:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:34:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-25 14:34:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:34:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:34:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-25 14:34:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:34:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:34:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:34:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:34:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:34:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:34:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:34:11,402 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:34:11,403 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 14:34:11,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:34:11 BoogieIcfgContainer [2020-09-25 14:34:11,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:34:11,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:34:11,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:34:11,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:34:11,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:34:09" (1/3) ... [2020-09-25 14:34:11,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bcd52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:34:11, skipping insertion in model container [2020-09-25 14:34:11,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:10" (2/3) ... [2020-09-25 14:34:11,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bcd52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:34:11, skipping insertion in model container [2020-09-25 14:34:11,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:34:11" (3/3) ... [2020-09-25 14:34:11,418 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-25 14:34:11,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:34:11,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:34:11,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:34:11,488 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:34:11,488 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:34:11,488 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:34:11,489 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:34:11,489 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:34:11,489 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:34:11,489 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:34:11,489 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:34:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 14:34:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 14:34:11,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:11,523 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 14:34:11,524 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-25 14:34:11,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:11,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891420348] [2020-09-25 14:34:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:16,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:16,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:34:16,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:34:16,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:34:16,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:16,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:16,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:34:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 14:34:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:34:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 14:34:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:16,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:16,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:16,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:16,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:34:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:16,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:34:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:17,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:17,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:34:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:17,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:17,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:17,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:34:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:17,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:17,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:17,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:34:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 14:34:17,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:17,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:34:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:17,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 14:34:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:17,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:17,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:17,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:17,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 14:34:17,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:17,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:34:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:34:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:17,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 14:34:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:17,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:17,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:34:17,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:34:17,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:17,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 14:34:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:17,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 14:34:17,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891420348] [2020-09-25 14:34:17,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:34:17,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:34:17,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912274626] [2020-09-25 14:34:17,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:34:17,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:17,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:34:17,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:34:17,504 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-09-25 14:34:18,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:18,228 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-09-25 14:34:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:34:18,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-25 14:34:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:18,248 INFO L225 Difference]: With dead ends: 187 [2020-09-25 14:34:18,249 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 14:34:18,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-25 14:34:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 14:34:18,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-25 14:34:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 14:34:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-25 14:34:18,336 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-09-25 14:34:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:18,337 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-25 14:34:18,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:34:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-25 14:34:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 14:34:18,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:18,343 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 14:34:18,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:34:18,343 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:18,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:18,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-25 14:34:18,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:18,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191396070] [2020-09-25 14:34:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:18,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:19,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:19,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 14:34:19,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-09-25 14:34:19,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:19,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:34:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 14:34:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:34:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:34:19,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:19,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:19,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:19,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:34:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:19,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:19,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:34:19,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:19,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:19,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:34:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:19,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:19,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:19,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:19,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:34:19,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:19,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:19,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:34:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:19,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:19,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:19,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:19,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:34:19,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:19,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:19,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 14:34:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:19,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:19,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:19,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:19,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 14:34:19,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:19,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:34:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:19,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:34:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:19,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:19,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:19,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:19,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 14:34:19,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:19,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:34:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:34:19,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:19,772 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 14:34:19,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191396070] [2020-09-25 14:34:19,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:19,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 14:34:19,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461360823] [2020-09-25 14:34:19,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:34:19,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:19,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:34:19,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:34:19,777 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-25 14:34:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:20,560 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-25 14:34:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:34:20,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 14:34:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:20,567 INFO L225 Difference]: With dead ends: 113 [2020-09-25 14:34:20,567 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 14:34:20,571 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 14:34:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 14:34:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-25 14:34:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 14:34:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 14:34:20,594 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-25 14:34:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:20,596 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 14:34:20,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:34:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 14:34:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 14:34:20,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:20,601 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 14:34:20,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:34:20,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:20,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-25 14:34:20,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:20,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36257876] [2020-09-25 14:34:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:21,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:21,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 14:34:21,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:21,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-09-25 14:34:21,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:21,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:34:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 14:34:21,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:34:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:21,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:21,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:21,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:21,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:21,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:34:21,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:21,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:21,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:21,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:34:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:21,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:34:21,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:21,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:21,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:34:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:21,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:21,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:21,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:21,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:34:21,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:21,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:21,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:21,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:34:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:21,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:21,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:34:21,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:21,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 14:34:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:22,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:22,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:22,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:22,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 14:34:22,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:22,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:34:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:34:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:34:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:22,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:22,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:34:22,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:22,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 14:34:22,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:22,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:22,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:34:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:34:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:34:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:22,305 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 14:34:22,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36257876] [2020-09-25 14:34:22,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:22,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 14:34:22,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995370490] [2020-09-25 14:34:22,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:34:22,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:22,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:34:22,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:34:22,309 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-25 14:34:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:23,113 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-25 14:34:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:34:23,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 14:34:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:23,120 INFO L225 Difference]: With dead ends: 95 [2020-09-25 14:34:23,120 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 14:34:23,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:34:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 14:34:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 14:34:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 14:34:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 14:34:23,143 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-25 14:34:23,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:23,143 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 14:34:23,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:34:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 14:34:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 14:34:23,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:23,153 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 14:34:23,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:34:23,154 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:23,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-25 14:34:23,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:23,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044019264] [2020-09-25 14:34:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:23,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:28,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 14:34:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:34:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:34:28,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:28,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:34:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 14:34:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 14:34:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:28,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:28,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:28,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:28,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:28,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:34:28,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:28,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:34:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:28,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:28,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:28,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:28,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:34:28,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:28,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:34:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:28,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:28,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:28,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:34:28,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:28,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:34:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:28,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:28,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 14:34:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:28,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:34:28,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:34:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 14:34:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 14:34:28,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:28,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:34:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:34:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:34:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:28,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:34:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:29,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:34:29,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 14:34:29,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:29,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:34:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:34:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:34:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 14:34:29,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044019264] [2020-09-25 14:34:29,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:34:29,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:34:29,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219681632] [2020-09-25 14:34:29,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:34:29,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:29,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:34:29,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:34:29,200 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 16 states. [2020-09-25 14:34:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:30,845 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-09-25 14:34:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 14:34:30,846 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-25 14:34:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:30,849 INFO L225 Difference]: With dead ends: 134 [2020-09-25 14:34:30,849 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 14:34:30,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=1230, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 14:34:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 14:34:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2020-09-25 14:34:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 14:34:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-25 14:34:30,862 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 99 [2020-09-25 14:34:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:30,862 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-25 14:34:30,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:34:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-25 14:34:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 14:34:30,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:30,864 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:30,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:34:30,865 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:30,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1242921541, now seen corresponding path program 1 times [2020-09-25 14:34:30,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:30,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782940569] [2020-09-25 14:34:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:35,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:35,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 14:34:35,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:34:35,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:35,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:35,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:34:35,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 14:34:35,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 14:34:35,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:36,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:36,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:36,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:36,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:36,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:34:36,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:36,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:36,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:36,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:34:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:36,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:36,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:36,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:34:36,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:36,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:36,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:34:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:36,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:34:36,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:36,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:36,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:34:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:36,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:36,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:36,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 14:34:36,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:36,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:34:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:34:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:36,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 14:34:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 14:34:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:36,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:34:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:34:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:34:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:34:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:36,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:36,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:34:36,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 14:34:36,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:36,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:34:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:34:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:34:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 14:34:37,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782940569] [2020-09-25 14:34:37,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:34:37,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 14:34:37,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806572595] [2020-09-25 14:34:37,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 14:34:37,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:37,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 14:34:37,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2020-09-25 14:34:37,331 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 24 states. [2020-09-25 14:34:39,053 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-09-25 14:34:39,567 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-09-25 14:34:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:40,158 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-09-25 14:34:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 14:34:40,159 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 101 [2020-09-25 14:34:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:40,161 INFO L225 Difference]: With dead ends: 119 [2020-09-25 14:34:40,161 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 14:34:40,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=307, Invalid=1949, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 14:34:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 14:34:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2020-09-25 14:34:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 14:34:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-09-25 14:34:40,176 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 101 [2020-09-25 14:34:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:40,177 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-09-25 14:34:40,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 14:34:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-09-25 14:34:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 14:34:40,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:40,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:40,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:34:40,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:40,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1667050223, now seen corresponding path program 2 times [2020-09-25 14:34:40,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:40,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707453358] [2020-09-25 14:34:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:42,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 14:34:45,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:34:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:34:45,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:34:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 14:34:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:34:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:45,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:34:45,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:34:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:34:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:34:45,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:45,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:45,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:34:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:45,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:45,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:34:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:45,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 14:34:45,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:34:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:45,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:34:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 14:34:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:46,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:46,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:34:46,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 14:34:46,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:46,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:34:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:34:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:34:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:34:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:46,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:46,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:46,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:34:46,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 14:34:46,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:46,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:34:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:34:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:34:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 14:34:47,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707453358] [2020-09-25 14:34:47,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:34:47,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 14:34:47,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895894005] [2020-09-25 14:34:47,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 14:34:47,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:47,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 14:34:47,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-09-25 14:34:47,131 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 24 states. [2020-09-25 14:34:48,133 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-09-25 14:34:49,062 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-09-25 14:34:49,305 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-09-25 14:34:49,654 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-09-25 14:34:49,848 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-09-25 14:34:50,031 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-09-25 14:34:50,223 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-09-25 14:34:50,423 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-09-25 14:34:50,718 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-09-25 14:34:51,076 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-09-25 14:34:51,291 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-09-25 14:34:51,578 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-09-25 14:34:51,792 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-09-25 14:34:51,989 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-09-25 14:34:52,207 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-09-25 14:34:52,514 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-09-25 14:34:52,732 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-09-25 14:34:52,931 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-09-25 14:34:53,159 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-09-25 14:34:53,560 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-09-25 14:34:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:53,651 INFO L93 Difference]: Finished difference Result 163 states and 171 transitions. [2020-09-25 14:34:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-25 14:34:53,652 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 109 [2020-09-25 14:34:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:53,655 INFO L225 Difference]: With dead ends: 163 [2020-09-25 14:34:53,655 INFO L226 Difference]: Without dead ends: 140 [2020-09-25 14:34:53,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=451, Invalid=2855, Unknown=0, NotChecked=0, Total=3306 [2020-09-25 14:34:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-25 14:34:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 116. [2020-09-25 14:34:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 14:34:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-09-25 14:34:53,671 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 109 [2020-09-25 14:34:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:53,672 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-09-25 14:34:53,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 14:34:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-09-25 14:34:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 14:34:53,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:53,674 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 14:34:53,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:34:53,674 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:53,675 INFO L82 PathProgramCache]: Analyzing trace with hash -936170188, now seen corresponding path program 2 times [2020-09-25 14:34:53,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:53,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582705226] [2020-09-25 14:34:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking...