/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:59:42,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:59:42,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:59:42,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:59:42,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:59:42,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:59:42,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:59:42,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:59:42,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:59:42,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:59:42,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:59:42,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:59:42,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:59:42,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:59:42,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:59:42,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:59:42,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:59:42,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:59:42,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:59:42,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:59:42,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:59:42,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:59:42,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:59:42,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:59:42,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:59:42,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:59:42,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:59:42,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:59:42,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:59:42,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:59:42,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:59:42,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:59:42,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:59:42,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:59:42,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:59:42,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:59:42,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:59:42,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:59:42,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:59:42,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:59:42,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:59:42,414 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 [2020-08-21 22:59:42,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:59:42,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:59:42,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:59:42,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:59:42,470 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:59:42,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:59:42,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:59:42,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:59:42,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:59:42,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:59:42,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:59:42,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:59:42,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:59:42,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:59:42,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:59:42,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:59:42,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:59:42,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:59:42,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:59:42,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:59:42,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:59:42,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:59:42,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:59:42,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:59:42,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:59:42,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:59:42,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:59:42,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:59:42,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:59:42,476 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:59:42,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:59:42,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:59:42,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:59:42,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:59:42,822 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:59:42,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 22:59:42,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71e284aee/9fb3a9e6d81f4dd197a5ff1843edf1d3/FLAG3430640ff [2020-08-21 22:59:43,402 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:59:43,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 22:59:43,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71e284aee/9fb3a9e6d81f4dd197a5ff1843edf1d3/FLAG3430640ff [2020-08-21 22:59:43,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71e284aee/9fb3a9e6d81f4dd197a5ff1843edf1d3 [2020-08-21 22:59:43,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:59:43,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:59:43,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:59:43,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:59:43,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:59:43,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:59:43" (1/1) ... [2020-08-21 22:59:43,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f757a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:43, skipping insertion in model container [2020-08-21 22:59:43,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:59:43" (1/1) ... [2020-08-21 22:59:43,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:59:43,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:59:44,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:59:44,378 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:59:44,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:59:44,549 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:59:44,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44 WrapperNode [2020-08-21 22:59:44,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:59:44,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:59:44,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:59:44,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:59:44,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:59:44,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:59:44,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:59:44,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:59:44,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (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 [2020-08-21 22:59:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:59:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:59:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 22:59:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 22:59:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 22:59:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 22:59:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 22:59:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 22:59:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 22:59:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 22:59:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 22:59:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 22:59:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 22:59:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 22:59:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 22:59:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 22:59:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 22:59:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 22:59:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 22:59:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 22:59:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 22:59:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:59:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:59:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 22:59:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 22:59:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 22:59:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 22:59:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 22:59:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 22:59:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 22:59:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 22:59:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 22:59:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 22:59:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 22:59:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 22:59:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 22:59:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 22:59:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 22:59:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 22:59:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 22:59:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 22:59:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 22:59:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 22:59:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 22:59:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 22:59:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 22:59:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 22:59:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 22:59:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 22:59:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 22:59:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 22:59:44,731 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 22:59:44,731 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 22:59:44,731 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 22:59:44,731 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 22:59:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 22:59:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 22:59:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 22:59:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 22:59:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 22:59:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 22:59:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 22:59:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 22:59:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 22:59:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 22:59:44,734 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 22:59:44,734 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 22:59:44,735 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 22:59:44,735 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 22:59:44,735 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 22:59:44,735 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 22:59:44,736 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 22:59:44,736 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 22:59:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 22:59:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 22:59:44,737 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 22:59:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 22:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 22:59:44,740 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 22:59:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 22:59:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 22:59:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 22:59:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 22:59:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 22:59:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 22:59:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 22:59:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 22:59:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 22:59:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 22:59:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 22:59:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 22:59:44,744 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 22:59:44,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:59:44,744 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 22:59:44,744 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 22:59:44,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:59:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:59:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 22:59:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 22:59:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:59:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 22:59:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:59:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 22:59:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 22:59:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:59:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 22:59:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 22:59:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 22:59:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 22:59:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 22:59:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 22:59:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 22:59:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 22:59:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 22:59:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 22:59:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 22:59:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:59:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:59:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:59:45,562 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:59:45,563 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 22:59:45,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:59:45 BoogieIcfgContainer [2020-08-21 22:59:45,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:59:45,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:59:45,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:59:45,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:59:45,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:59:43" (1/3) ... [2020-08-21 22:59:45,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cc7acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:59:45, skipping insertion in model container [2020-08-21 22:59:45,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (2/3) ... [2020-08-21 22:59:45,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cc7acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:59:45, skipping insertion in model container [2020-08-21 22:59:45,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:59:45" (3/3) ... [2020-08-21 22:59:45,576 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-21 22:59:45,588 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:59:45,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:59:45,611 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:59:45,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:59:45,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:59:45,639 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:59:45,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:59:45,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:59:45,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:59:45,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:59:45,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:59:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 22:59:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 22:59:45,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:45,674 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] [2020-08-21 22:59:45,675 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:45,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 22:59:45,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:45,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529442314] [2020-08-21 22:59:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 22:59:46,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529442314] [2020-08-21 22:59:46,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:46,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:59:46,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000243855] [2020-08-21 22:59:46,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:59:46,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:46,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:59:46,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:59:46,173 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 22:59:46,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:46,618 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 22:59:46,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:59:46,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 22:59:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:46,635 INFO L225 Difference]: With dead ends: 343 [2020-08-21 22:59:46,635 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 22:59:46,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:59:46,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 22:59:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 22:59:46,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 22:59:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 22:59:46,714 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 22:59:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:46,714 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 22:59:46,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:59:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 22:59:46,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 22:59:46,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:46,718 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] [2020-08-21 22:59:46,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:59:46,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:46,720 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 22:59:46,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:46,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980783187] [2020-08-21 22:59:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 22:59:47,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980783187] [2020-08-21 22:59:47,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:59:47,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 22:59:47,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930932066] [2020-08-21 22:59:47,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:59:47,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:47,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:59:47,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:59:47,181 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 22:59:48,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:48,382 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 22:59:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:59:48,382 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 22:59:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:48,387 INFO L225 Difference]: With dead ends: 327 [2020-08-21 22:59:48,387 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 22:59:48,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:59:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 22:59:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 22:59:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 22:59:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 22:59:48,440 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 22:59:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:48,440 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 22:59:48,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:59:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 22:59:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:59:48,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:48,449 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] [2020-08-21 22:59:48,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:59:48,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:48,450 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 22:59:48,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:48,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106853318] [2020-08-21 22:59:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:59:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-21 22:59:50,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106853318] [2020-08-21 22:59:50,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:59:50,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-21 22:59:50,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735927238] [2020-08-21 22:59:50,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-21 22:59:50,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:50,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-21 22:59:50,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-21 22:59:50,167 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-21 22:59:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:53,624 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-21 22:59:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 22:59:53,624 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-21 22:59:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:53,635 INFO L225 Difference]: With dead ends: 358 [2020-08-21 22:59:53,636 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 22:59:53,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 22:59:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 22:59:53,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-21 22:59:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 22:59:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 22:59:53,685 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 22:59:53,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:53,685 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 22:59:53,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-21 22:59:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 22:59:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:59:53,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:53,691 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] [2020-08-21 22:59:53,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:59:53,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:53,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 22:59:53,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:53,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622693644] [2020-08-21 22:59:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:59:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-21 22:59:54,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622693644] [2020-08-21 22:59:54,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:59:54,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 22:59:54,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509257102] [2020-08-21 22:59:54,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 22:59:54,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:54,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 22:59:54,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:59:54,972 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-21 22:59:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:57,297 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-21 22:59:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:59:57,298 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 22:59:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:57,301 INFO L225 Difference]: With dead ends: 375 [2020-08-21 22:59:57,301 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 22:59:57,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-21 22:59:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 22:59:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-21 22:59:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-21 22:59:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-21 22:59:57,336 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-21 22:59:57,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:57,337 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-21 22:59:57,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 22:59:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-21 22:59:57,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:59:57,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:57,343 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] [2020-08-21 22:59:57,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:59:57,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:57,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:57,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 22:59:57,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:57,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041009103] [2020-08-21 22:59:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:59:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-21 22:59:58,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041009103] [2020-08-21 22:59:58,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:59:58,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 22:59:58,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89813096] [2020-08-21 22:59:58,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 22:59:58,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:58,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 22:59:58,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 22:59:58,760 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-21 23:00:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:00:01,027 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-21 23:00:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 23:00:01,028 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 23:00:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:00:01,032 INFO L225 Difference]: With dead ends: 327 [2020-08-21 23:00:01,032 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 23:00:01,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 23:00:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 23:00:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-21 23:00:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-21 23:00:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-21 23:00:01,055 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-21 23:00:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:00:01,056 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-21 23:00:01,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 23:00:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-21 23:00:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 23:00:01,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:00:01,058 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, 1, 1, 1] [2020-08-21 23:00:01,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:00:01,059 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:00:01,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:00:01,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 23:00:01,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:00:01,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385531695] [2020-08-21 23:00:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:00:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:00:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:00:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:00:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 23:00:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,792 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-21 23:00:03,167 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-08-21 23:00:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:00:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:04,595 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-21 23:00:04,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:17,660 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 257 DAG size of output: 48