/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:25:49,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:25:49,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:25:49,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:25:49,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:25:49,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:25:49,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:25:49,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:25:49,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:25:49,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:25:49,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:25:49,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:25:49,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:25:49,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:25:49,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:25:49,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:25:49,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:25:49,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:25:49,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:25:49,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:25:49,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:25:49,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:25:49,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:25:49,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:25:49,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:25:49,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:25:49,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:25:49,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:25:49,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:25:49,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:25:49,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:25:49,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:25:49,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:25:49,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:25:49,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:25:49,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:25:49,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:25:49,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:25:49,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:25:49,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:25:49,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:25:49,239 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 [2020-09-21 12:25:49,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:25:49,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:25:49,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:25:49,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:25:49,286 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:25:49,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:25:49,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:25:49,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:25:49,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:25:49,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:25:49,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:25:49,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:25:49,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:25:49,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:25:49,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:25:49,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:25:49,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:25:49,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:25:49,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:25:49,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:25:49,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:25:49,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:25:49,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:25:49,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:25:49,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:25:49,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:25:49,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:25:49,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:25:49,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:25:49,292 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:25:49,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:25:49,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:25:49,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:25:49,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:25:49,751 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:25:49,753 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-09-21 12:25:49,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88fbb05fc/2caf20171ee64959b060abf428c6e2af/FLAGf394765be [2020-09-21 12:25:50,473 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:25:50,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-09-21 12:25:50,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88fbb05fc/2caf20171ee64959b060abf428c6e2af/FLAGf394765be [2020-09-21 12:25:50,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88fbb05fc/2caf20171ee64959b060abf428c6e2af [2020-09-21 12:25:50,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:25:50,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:25:50,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:50,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:25:50,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:25:50,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:50" (1/1) ... [2020-09-21 12:25:50,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b337bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:50, skipping insertion in model container [2020-09-21 12:25:50,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:50" (1/1) ... [2020-09-21 12:25:50,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:25:50,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:25:51,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:51,379 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:25:51,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:51,560 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:25:51,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51 WrapperNode [2020-09-21 12:25:51,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:51,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:25:51,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:25:51,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:25:51,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (1/1) ... [2020-09-21 12:25:51,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (1/1) ... [2020-09-21 12:25:51,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (1/1) ... [2020-09-21 12:25:51,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (1/1) ... [2020-09-21 12:25:51,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (1/1) ... [2020-09-21 12:25:51,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (1/1) ... [2020-09-21 12:25:51,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (1/1) ... [2020-09-21 12:25:51,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:25:51,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:25:51,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:25:51,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:25:51,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (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 [2020-09-21 12:25:51,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:25:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:25:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 12:25:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-21 12:25:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-21 12:25:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-21 12:25:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-09-21 12:25:51,758 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-09-21 12:25:51,759 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-09-21 12:25:51,759 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-09-21 12:25:51,759 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-09-21 12:25:51,759 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-09-21 12:25:51,759 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-09-21 12:25:51,760 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-09-21 12:25:51,760 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-09-21 12:25:51,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-09-21 12:25:51,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-09-21 12:25:51,761 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-09-21 12:25:51,761 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-09-21 12:25:51,762 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-09-21 12:25:51,762 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-09-21 12:25:51,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:25:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:25:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 12:25:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 12:25:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 12:25:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 12:25:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 12:25:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 12:25:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 12:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 12:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 12:25:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 12:25:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 12:25:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 12:25:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 12:25:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 12:25:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 12:25:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 12:25:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 12:25:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 12:25:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 12:25:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 12:25:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 12:25:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 12:25:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 12:25:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 12:25:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 12:25:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 12:25:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 12:25:51,770 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 12:25:51,770 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 12:25:51,770 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 12:25:51,770 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 12:25:51,770 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 12:25:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 12:25:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 12:25:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 12:25:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:25:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:25:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:25:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:25:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 12:25:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 12:25:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:25:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 12:25:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 12:25:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:25:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 12:25:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 12:25:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 12:25:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:25:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 12:25:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 12:25:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 12:25:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 12:25:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 12:25:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 12:25:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 12:25:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 12:25:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 12:25:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 12:25:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 12:25:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 12:25:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 12:25:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 12:25:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 12:25:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 12:25:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 12:25:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 12:25:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 12:25:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 12:25:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 12:25:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 12:25:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 12:25:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 12:25:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 12:25:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 12:25:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 12:25:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 12:25:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 12:25:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 12:25:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 12:25:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 12:25:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 12:25:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 12:25:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 12:25:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 12:25:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 12:25:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 12:25:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 12:25:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:25:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-21 12:25:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-09-21 12:25:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:25:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:25:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-09-21 12:25:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-09-21 12:25:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:25:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-09-21 12:25:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:25:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 12:25:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 12:25:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:25:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-09-21 12:25:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-09-21 12:25:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-09-21 12:25:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-09-21 12:25:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-09-21 12:25:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-09-21 12:25:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-09-21 12:25:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-09-21 12:25:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-09-21 12:25:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-09-21 12:25:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-09-21 12:25:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:25:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:25:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:25:52,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:25:52,755 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-09-21 12:25:52,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:52 BoogieIcfgContainer [2020-09-21 12:25:52,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:25:52,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:25:52,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:25:52,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:25:52,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:50" (1/3) ... [2020-09-21 12:25:52,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d94da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:52, skipping insertion in model container [2020-09-21 12:25:52,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:51" (2/3) ... [2020-09-21 12:25:52,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d94da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:52, skipping insertion in model container [2020-09-21 12:25:52,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:52" (3/3) ... [2020-09-21 12:25:52,772 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-09-21 12:25:52,785 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:25:52,796 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:25:52,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:25:52,855 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:25:52,856 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:25:52,856 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:25:52,856 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:25:52,856 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:25:52,856 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:25:52,857 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:25:52,857 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:25:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-09-21 12:25:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 12:25:52,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:52,901 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:25:52,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:52,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-09-21 12:25:52,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:52,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632334591] [2020-09-21 12:25:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:25:54,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:25:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1415 [2020-09-21 12:25:54,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:54,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:54,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-21 12:25:54,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:54,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-21 12:25:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:54,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:25:54,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:54,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:55,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:25:55,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:25:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-09-21 12:25:55,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:25:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:55,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 12:25:56,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:25:56,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:25:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:25:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:25:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:25:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:25:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:25:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:25:56,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:25:56,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:25:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:56,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:56,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:25:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:57,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:25:57,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:25:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:25:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:25:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:57,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:25:57,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:25:57,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:25:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:57,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:57,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:25:57,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:57,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:25:57,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:25:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:57,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:25:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:57,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:25:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:25:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:25:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-21 12:25:57,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632334591] [2020-09-21 12:25:57,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:57,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:25:57,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348001699] [2020-09-21 12:25:57,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:25:57,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:57,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:25:57,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:25:57,252 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-09-21 12:25:57,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:57,736 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-09-21 12:25:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:25:57,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-09-21 12:25:57,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:57,755 INFO L225 Difference]: With dead ends: 343 [2020-09-21 12:25:57,755 INFO L226 Difference]: Without dead ends: 166 [2020-09-21 12:25:57,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:25:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-21 12:25:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-09-21 12:25:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-21 12:25:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-09-21 12:25:57,839 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-09-21 12:25:57,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:57,840 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-09-21 12:25:57,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:25:57,840 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-09-21 12:25:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 12:25:57,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:57,844 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:25:57,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:25:57,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:57,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:57,845 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-09-21 12:25:57,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:57,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318323476] [2020-09-21 12:25:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-21 12:25:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:25:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-09-21 12:25:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:25:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:25:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:59,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:59,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:59,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:00,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:26:00,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:26:00,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:26:00,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:26:00,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:00,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:26:01,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:26:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:26:01,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:26:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 12:26:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:01,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 12:26:01,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:01,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:26:01,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:01,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:26:01,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:01,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:26:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:01,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:01,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 12:26:01,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:26:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:01,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:26:01,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:26:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:01,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:01,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:26:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-21 12:26:01,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318323476] [2020-09-21 12:26:01,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:01,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:26:01,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291064433] [2020-09-21 12:26:01,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:26:01,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:01,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:26:01,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:26:01,707 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 7 states. [2020-09-21 12:26:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:02,631 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-09-21 12:26:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:26:02,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-21 12:26:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:02,637 INFO L225 Difference]: With dead ends: 327 [2020-09-21 12:26:02,637 INFO L226 Difference]: Without dead ends: 179 [2020-09-21 12:26:02,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:26:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-21 12:26:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-09-21 12:26:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-21 12:26:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-09-21 12:26:02,685 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-09-21 12:26:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:02,686 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-09-21 12:26:02,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:26:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-09-21 12:26:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 12:26:02,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:02,697 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:26:02,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:26:02,699 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:02,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:02,699 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-09-21 12:26:02,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:02,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389895216] [2020-09-21 12:26:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:03,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:03,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:03,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-21 12:26:03,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-09-21 12:26:03,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:26:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:26:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:26:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:04,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:04,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:04,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:04,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:04,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:26:04,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:26:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:05,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:05,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-21 12:26:05,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:26:05,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:26:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:26:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:06,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:06,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-21 12:26:06,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:26:06,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:26:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:26:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:26:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:07,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:07,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:26:07,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:26:07,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:26:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 12:26:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:26:07,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:07,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:07,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:08,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:08,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:08,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 12:26:08,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:26:08,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:26:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 12:26:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:26:08,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:08,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:08,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:08,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:08,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:08,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:26:08,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:08,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:08,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:26:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:08,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:09,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:09,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:26:09,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:26:09,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:26:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:26:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:09,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:10,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:10,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:26:10,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:10,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:26:10,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:26:10,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:26:10,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:26:10,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:11,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:11,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-21 12:26:11,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:26:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:26:11,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:11,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:11,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:11,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-21 12:26:11,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:26:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:26:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:11,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:11,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:11,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:11,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:26:11,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:26:11,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:11,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:11,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:11,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-21 12:26:11,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:26:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:26:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:11,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:12,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:12,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:12,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-21 12:26:12,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:26:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:26:12,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:12,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:12,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:12,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:12,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 12:26:12,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:26:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:26:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:13,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:13,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:13,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:26:13,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:26:13,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-21 12:26:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:13,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:14,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:14,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:14,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 12:26:14,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-09-21 12:26:14,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:14,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:14,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:14,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:14,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:14,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:14,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:14,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:26:14,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:26:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:14,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:15,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:15,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:26:15,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:26:15,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:15,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:15,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:16,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:16,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:26:16,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:26:16,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:16,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:26:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:16,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:16,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:16,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:16,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:16,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:16,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:26:16,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:16,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:16,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:16,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:16,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:26:16,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:17,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:17,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:17,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:17,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:26:17,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:17,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:17,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:17,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:17,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:26:17,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:17,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:17,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:17,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:17,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-09-21 12:26:17,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389895216] [2020-09-21 12:26:17,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:17,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 12:26:17,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960045953] [2020-09-21 12:26:17,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 12:26:17,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:17,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 12:26:17,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-09-21 12:26:17,199 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 23 states. [2020-09-21 12:26:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:20,795 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-09-21 12:26:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-21 12:26:20,796 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 154 [2020-09-21 12:26:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:20,800 INFO L225 Difference]: With dead ends: 358 [2020-09-21 12:26:20,800 INFO L226 Difference]: Without dead ends: 196 [2020-09-21 12:26:20,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=224, Invalid=1846, Unknown=0, NotChecked=0, Total=2070 [2020-09-21 12:26:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-21 12:26:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-09-21 12:26:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-21 12:26:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-09-21 12:26:20,824 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-09-21 12:26:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:20,825 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-09-21 12:26:20,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 12:26:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-09-21 12:26:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 12:26:20,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:20,827 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:26:20,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:26:20,827 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:20,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:20,828 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-09-21 12:26:20,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:20,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002338254] [2020-09-21 12:26:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:21,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-21 12:26:21,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:21,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-21 12:26:21,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:26:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:26:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:26:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:22,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:22,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:22,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:26:22,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:26:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:23,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:23,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-21 12:26:23,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:23,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-21 12:26:23,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:26:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:26:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:24,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:24,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-21 12:26:24,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:24,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1076 [2020-09-21 12:26:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:26:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:26:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:26:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:25,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:25,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:26:25,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:25,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-21 12:26:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:26:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 12:26:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 12:26:26,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-09-21 12:26:26,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:26:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-21 12:26:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:26,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:27,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:27,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:27,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:27,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 12:26:27,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:27,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:27,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:27,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:26:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:27,841 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2020-09-21 12:26:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:26:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:26:28,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-21 12:26:28,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 12:26:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:28,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:26:28,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:26:28,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:28,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:26:28,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:28,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:28,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:26:28,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:28,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:28,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:26:28,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:28,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:28,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:26:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:28,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:26:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:28,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:26:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:28,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:26:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:26:28,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-21 12:26:28,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-21 12:26:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:28,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 12:26:28,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-21 12:26:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:28,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:26:28,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:26:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:26:28,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:26:28,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:28,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:26:28,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:26:28,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:28,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:28,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:26:28,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:28,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:26:28,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:28,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:26:28,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:28,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:28,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:26:28,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:29,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:26:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:29,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:26:29,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:26:29,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:29,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:29,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:29,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:26:29,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:29,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:29,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:29,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:29,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:29,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-09-21 12:26:29,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002338254] [2020-09-21 12:26:29,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:29,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 12:26:29,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98352524] [2020-09-21 12:26:29,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:26:29,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:29,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:26:29,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:26:29,214 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 13 states. [2020-09-21 12:26:29,872 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-09-21 12:26:31,471 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-09-21 12:26:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:31,611 INFO L93 Difference]: Finished difference Result 378 states and 449 transitions. [2020-09-21 12:26:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:26:31,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-09-21 12:26:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:31,614 INFO L225 Difference]: With dead ends: 378 [2020-09-21 12:26:31,614 INFO L226 Difference]: Without dead ends: 205 [2020-09-21 12:26:31,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:26:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-21 12:26:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2020-09-21 12:26:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-21 12:26:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-09-21 12:26:31,638 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-09-21 12:26:31,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:31,639 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-09-21 12:26:31,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:26:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-09-21 12:26:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 12:26:31,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:31,641 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:26:31,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:26:31,642 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:31,642 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-09-21 12:26:31,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:31,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133722512] [2020-09-21 12:26:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking...