/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:09,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:09,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:09,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:09,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:09,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:09,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:09,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:09,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:09,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:09,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:09,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:09,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:09,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:09,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:09,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:09,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:09,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:09,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:09,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:09,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:09,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:09,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:09,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:09,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:09,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:09,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:09,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:09,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:09,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:09,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:09,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:09,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:09,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:09,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:09,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:09,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:09,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:09,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:09,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:09,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:09,239 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 04:24:09,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:09,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:09,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:09,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:09,291 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:09,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:09,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:09,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:09,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:09,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:09,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:09,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:09,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:09,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:09,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:09,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:09,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:09,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:09,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:09,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:09,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:09,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:09,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:09,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:09,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:09,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:09,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:09,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:09,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:09,298 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:09,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:09,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:09,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:09,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:09,758 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:09,759 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 04:24:09,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648141438/d9e531b919b84129bef0d9181f641b23/FLAGa3eee50ef [2020-09-25 04:24:10,496 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:10,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 04:24:10,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648141438/d9e531b919b84129bef0d9181f641b23/FLAGa3eee50ef [2020-09-25 04:24:10,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648141438/d9e531b919b84129bef0d9181f641b23 [2020-09-25 04:24:10,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:10,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:10,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:10,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:10,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:10,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:10" (1/1) ... [2020-09-25 04:24:10,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ce1d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:10, skipping insertion in model container [2020-09-25 04:24:10,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:10" (1/1) ... [2020-09-25 04:24:10,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:10,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:11,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:11,294 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:11,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:11,407 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:11,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11 WrapperNode [2020-09-25 04:24:11,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:11,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:11,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:11,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:11,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (1/1) ... [2020-09-25 04:24:11,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (1/1) ... [2020-09-25 04:24:11,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (1/1) ... [2020-09-25 04:24:11,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (1/1) ... [2020-09-25 04:24:11,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (1/1) ... [2020-09-25 04:24:11,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (1/1) ... [2020-09-25 04:24:11,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (1/1) ... [2020-09-25 04:24:11,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:11,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:11,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:11,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:11,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (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 04:24:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 04:24:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 04:24:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 04:24:11,565 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 04:24:11,565 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 04:24:11,565 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 04:24:11,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 04:24:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 04:24:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:24:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:24:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:24:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:24:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:24:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:24:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:24:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:24:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:24:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:24:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:24:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:24:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:24:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:24:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:24:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:24:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:24:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:24:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:24:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:24:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:24:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:24:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:24:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:24:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:24:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:24:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:24:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:24:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:24:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:24:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:24:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:24:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:24:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:24:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:24:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:24:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:24:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:24:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:24:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:24:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:24:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:24:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:24:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:24:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:24:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:24:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:24:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:24:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:24:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:24:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:24:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:24:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:24:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:24:11,576 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:24:11,576 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:24:11,576 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:24:11,576 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:24:11,576 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 04:24:11,576 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:24:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:24:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 04:24:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:24:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 04:24:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:24:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:24:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:24:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:24:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:24:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:24:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:24:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:24:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:24:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:24:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:24:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:24:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:24:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:24:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:24:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:24:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:24:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:24:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:24:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:24:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:24:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:24:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:24:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:24:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:24:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:24:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:24:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:24:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:24:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:24:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:24:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:24:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:24:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:24:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:24:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:24:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:24:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:24:11,584 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 04:24:11,584 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 04:24:11,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:24:11,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:24:11,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:24:11,584 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 04:24:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 04:24:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:24:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:24:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:24:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 04:24:11,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:11,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:11,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:24:11,989 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 04:24:12,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:12,215 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 04:24:12,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:12 BoogieIcfgContainer [2020-09-25 04:24:12,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:12,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:12,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:12,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:12,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:10" (1/3) ... [2020-09-25 04:24:12,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bbfeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:12, skipping insertion in model container [2020-09-25 04:24:12,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:11" (2/3) ... [2020-09-25 04:24:12,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bbfeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:12, skipping insertion in model container [2020-09-25 04:24:12,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:12" (3/3) ... [2020-09-25 04:24:12,230 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 04:24:12,242 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:12,254 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:12,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:12,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:12,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:12,312 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:12,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:12,313 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:12,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:12,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:12,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 04:24:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 04:24:12,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:12,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:12,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:12,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:12,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 04:24:12,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:12,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297867978] [2020-09-25 04:24:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:13,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:13,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:24:13,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:24:13,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-25 04:24:13,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:13,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 04:24:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:13,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:24:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:13,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:13,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:13,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:13,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:13,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:13,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:13,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:24:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:13,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:13,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:24:13,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:13,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:24:13,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:13,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:13,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297867978] [2020-09-25 04:24:13,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:13,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:13,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038436182] [2020-09-25 04:24:13,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:13,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:13,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:13,479 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-09-25 04:24:13,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:13,686 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-25 04:24:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:24:13,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 04:24:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:13,703 INFO L225 Difference]: With dead ends: 118 [2020-09-25 04:24:13,703 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 04:24:13,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 04:24:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-09-25 04:24:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 04:24:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-09-25 04:24:13,764 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 27 [2020-09-25 04:24:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:13,765 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-09-25 04:24:13,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-09-25 04:24:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 04:24:13,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:13,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:13,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:13,768 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:13,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:13,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1737237332, now seen corresponding path program 1 times [2020-09-25 04:24:13,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:13,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500605472] [2020-09-25 04:24:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:14,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:14,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:24:14,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:24:14,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-25 04:24:14,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:14,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:24:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:24:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:14,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:14,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:14,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:14,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:14,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:14,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:14,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:14,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:14,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:14,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:24:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:14,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:14,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:24:14,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 04:24:14,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:14,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:24:14,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:14,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500605472] [2020-09-25 04:24:14,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:14,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:24:14,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021595113] [2020-09-25 04:24:14,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:24:14,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:14,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:24:14,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:14,667 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2020-09-25 04:24:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:14,896 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-09-25 04:24:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:24:14,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 04:24:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:14,899 INFO L225 Difference]: With dead ends: 74 [2020-09-25 04:24:14,899 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 04:24:14,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 04:24:14,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-09-25 04:24:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 04:24:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 04:24:14,918 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 27 [2020-09-25 04:24:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:14,919 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 04:24:14,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:24:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 04:24:14,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 04:24:14,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:14,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:14,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:14,922 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:14,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:14,922 INFO L82 PathProgramCache]: Analyzing trace with hash 278069346, now seen corresponding path program 1 times [2020-09-25 04:24:14,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:14,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342137806] [2020-09-25 04:24:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:15,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:19,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:24:19,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 04:24:19,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:19,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:24:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:20,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:24:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:24:20,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:20,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:24:20,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:24:20,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:24:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:20,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:20,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:24:20,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:24:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:20,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:20,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342137806] [2020-09-25 04:24:20,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:20,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:24:20,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522644133] [2020-09-25 04:24:20,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:24:20,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:24:20,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:20,154 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 8 states. [2020-09-25 04:24:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:20,468 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2020-09-25 04:24:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:24:20,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-09-25 04:24:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:20,470 INFO L225 Difference]: With dead ends: 105 [2020-09-25 04:24:20,471 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 04:24:20,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 04:24:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2020-09-25 04:24:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 04:24:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 04:24:20,481 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 45 [2020-09-25 04:24:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:20,481 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 04:24:20,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:24:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 04:24:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 04:24:20,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:20,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:20,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:24:20,484 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:20,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:20,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1675692718, now seen corresponding path program 1 times [2020-09-25 04:24:20,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:20,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630548525] [2020-09-25 04:24:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:24:25,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:25,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:24:25,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:24:25,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:25,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:25,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:25,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:24:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:24:25,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:25,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 04:24:25,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:24:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 04:24:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:25,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:24:25,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:24:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:25,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630548525] [2020-09-25 04:24:25,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:25,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:24:25,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122778964] [2020-09-25 04:24:25,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:24:25,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:25,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:24:25,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:25,895 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 9 states. [2020-09-25 04:24:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:26,181 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-09-25 04:24:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:24:26,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-25 04:24:26,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:26,183 INFO L225 Difference]: With dead ends: 73 [2020-09-25 04:24:26,183 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 04:24:26,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:24:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 04:24:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-09-25 04:24:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 04:24:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 04:24:26,199 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 57 [2020-09-25 04:24:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:26,200 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 04:24:26,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:24:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 04:24:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 04:24:26,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:26,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:26,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:24:26,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:26,209 INFO L82 PathProgramCache]: Analyzing trace with hash -182223992, now seen corresponding path program 2 times [2020-09-25 04:24:26,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:26,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983931875] [2020-09-25 04:24:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:26,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:31,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:24:31,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:24:31,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:24:31,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:31,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:24:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:31,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:31,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:31,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:31,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:24:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:31,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:24:31,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 04:24:31,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:31,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:24:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 04:24:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:31,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:24:31,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:31,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:24:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 04:24:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:31,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:24:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:31,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:24:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 04:24:31,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983931875] [2020-09-25 04:24:31,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:31,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 04:24:31,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093797695] [2020-09-25 04:24:31,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:24:31,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:31,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:24:31,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:24:31,674 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 10 states. [2020-09-25 04:24:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:31,954 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 04:24:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:24:31,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-09-25 04:24:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:31,957 INFO L225 Difference]: With dead ends: 128 [2020-09-25 04:24:31,957 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 04:24:31,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 04:24:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2020-09-25 04:24:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 04:24:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 04:24:31,967 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 75 [2020-09-25 04:24:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:31,967 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 04:24:31,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:24:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 04:24:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 04:24:31,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:31,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:31,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:24:31,970 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:31,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1955081336, now seen corresponding path program 3 times [2020-09-25 04:24:31,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:31,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859244914] [2020-09-25 04:24:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:33,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 04:24:37,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:24:37,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:24:37,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 04:24:37,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:24:37,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:37,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:37,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:37,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:24:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:24:37,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 04:24:37,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:24:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:24:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:37,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:24:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:37,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:37,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:24:37,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:24:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 04:24:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:37,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:24:37,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:24:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 04:24:37,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859244914] [2020-09-25 04:24:37,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:37,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:24:37,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167522817] [2020-09-25 04:24:37,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:37,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:37,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:37,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:37,423 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 7 states. [2020-09-25 04:24:37,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:37,624 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2020-09-25 04:24:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:24:37,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-09-25 04:24:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:37,626 INFO L225 Difference]: With dead ends: 131 [2020-09-25 04:24:37,626 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 04:24:37,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:37,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 04:24:37,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2020-09-25 04:24:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 04:24:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-09-25 04:24:37,635 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 87 [2020-09-25 04:24:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:37,636 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-09-25 04:24:37,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-09-25 04:24:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 04:24:37,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:37,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:37,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:24:37,638 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:37,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1865398913, now seen corresponding path program 1 times [2020-09-25 04:24:37,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:37,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658202462] [2020-09-25 04:24:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 04:24:42,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:24:42,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:42,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 04:24:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:24:42,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:42,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:42,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:42,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:24:42,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:42,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:24:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:24:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:42,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 04:24:42,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:24:42,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:42,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:42,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 04:24:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:42,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:42,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:24:42,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:42,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:42,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:24:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:43,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:43,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:24:43,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:43,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:24:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 04:24:43,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658202462] [2020-09-25 04:24:43,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:43,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 04:24:43,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470034006] [2020-09-25 04:24:43,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:24:43,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:43,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:24:43,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:24:43,173 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 10 states. [2020-09-25 04:24:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:43,791 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-09-25 04:24:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:24:43,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-25 04:24:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:43,794 INFO L225 Difference]: With dead ends: 114 [2020-09-25 04:24:43,794 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 04:24:43,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:24:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 04:24:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2020-09-25 04:24:43,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 04:24:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-09-25 04:24:43,817 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 88 [2020-09-25 04:24:43,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:43,817 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-09-25 04:24:43,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:24:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-09-25 04:24:43,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 04:24:43,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:43,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:43,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:24:43,823 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-25 04:24:43,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:43,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350500343] [2020-09-25 04:24:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 04:24:49,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:24:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5167 [2020-09-25 04:24:49,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 04:24:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 04:24:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:24:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:49,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:49,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:49,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:24:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 04:24:49,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 04:24:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:24:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:24:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 04:24:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:49,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 04:24:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:24:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:24:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:24:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:24:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:49,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:24:49,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:24:49,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:49,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:24:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 04:24:49,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350500343] [2020-09-25 04:24:49,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:49,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 04:24:49,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41720319] [2020-09-25 04:24:49,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 04:24:49,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:49,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 04:24:49,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:24:49,924 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 19 states. [2020-09-25 04:24:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:51,243 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2020-09-25 04:24:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 04:24:51,244 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-09-25 04:24:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:51,246 INFO L225 Difference]: With dead ends: 122 [2020-09-25 04:24:51,246 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 04:24:51,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 04:24:51,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 04:24:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 04:24:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 04:24:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-25 04:24:51,256 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 89 [2020-09-25 04:24:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:51,256 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-25 04:24:51,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 04:24:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-25 04:24:51,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 04:24:51,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:51,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:51,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:24:51,258 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:51,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:51,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1167974453, now seen corresponding path program 1 times [2020-09-25 04:24:51,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:51,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535435375] [2020-09-25 04:24:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking...