/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=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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:44:17,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:44:17,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:44:17,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:44:17,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:44:17,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:44:17,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:44:17,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:44:17,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:44:17,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:44:17,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:44:17,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:44:17,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:44:17,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:44:17,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:44:17,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:44:17,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:44:17,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:44:17,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:44:17,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:44:17,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:44:17,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:44:17,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:44:17,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:44:17,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:44:17,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:44:17,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:44:17,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:44:17,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:44:17,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:44:17,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:44:17,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:44:17,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:44:17,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:44:17,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:44:17,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:44:17,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:44:17,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:44:17,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:44:17,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:44:17,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:44:17,994 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 15:44:18,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:44:18,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:44:18,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:44:18,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:44:18,020 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:44:18,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:44:18,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:44:18,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:44:18,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:44:18,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:44:18,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:44:18,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:44:18,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:44:18,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:44:18,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:44:18,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:44:18,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:44:18,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:44:18,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:44:18,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:44:18,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:44:18,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:44:18,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:44:18,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:44:18,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:44:18,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:44:18,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:44:18,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:44:18,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:44:18,025 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:44:18,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:44:18,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:44:18,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:44:18,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:44:18,391 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:44:18,392 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-21 15:44:18,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b7ac4a0/8ea280fda74b4f088897b4fc67fbc4c3/FLAG75f00d650 [2020-08-21 15:44:19,016 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:44:19,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-21 15:44:19,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b7ac4a0/8ea280fda74b4f088897b4fc67fbc4c3/FLAG75f00d650 [2020-08-21 15:44:19,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b7ac4a0/8ea280fda74b4f088897b4fc67fbc4c3 [2020-08-21 15:44:19,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:44:19,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:44:19,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:44:19,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:44:19,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:44:19,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:44:19" (1/1) ... [2020-08-21 15:44:19,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421e6203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:19, skipping insertion in model container [2020-08-21 15:44:19,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:44:19" (1/1) ... [2020-08-21 15:44:19,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:44:19,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:44:19,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:44:19,888 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:44:19,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:44:20,053 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:44:20,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20 WrapperNode [2020-08-21 15:44:20,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:44:20,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:44:20,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:44:20,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:44:20,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:44:20,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:44:20,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:44:20,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:44:20,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (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 15:44:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:44:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:44:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 15:44:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 15:44:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 15:44:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 15:44:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 15:44:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 15:44:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 15:44:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 15:44:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 15:44:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 15:44:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 15:44:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 15:44:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 15:44:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 15:44:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 15:44:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 15:44:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 15:44:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 15:44:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 15:44:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:44:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:44:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 15:44:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 15:44:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 15:44:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 15:44:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 15:44:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 15:44:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 15:44:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 15:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 15:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 15:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 15:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 15:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 15:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 15:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 15:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 15:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 15:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 15:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 15:44:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 15:44:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 15:44:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 15:44:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 15:44:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 15:44:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 15:44:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 15:44:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 15:44:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 15:44:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 15:44:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 15:44:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 15:44:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 15:44:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 15:44:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 15:44:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 15:44:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 15:44:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 15:44:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 15:44:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 15:44:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 15:44:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 15:44:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 15:44:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 15:44:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 15:44:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 15:44:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 15:44:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 15:44:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 15:44:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 15:44:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 15:44:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 15:44:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 15:44:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:44:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 15:44:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 15:44:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:44:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 15:44:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 15:44:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 15:44:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 15:44:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 15:44:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:44:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 15:44:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 15:44:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 15:44:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 15:44:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 15:44:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 15:44:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 15:44:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 15:44:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 15:44:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 15:44:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 15:44:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 15:44:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 15:44:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 15:44:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 15:44:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 15:44:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 15:44:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 15:44:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 15:44:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 15:44:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 15:44:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 15:44:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 15:44:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 15:44:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 15:44:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 15:44:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 15:44:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 15:44:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 15:44:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 15:44:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 15:44:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 15:44:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 15:44:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 15:44:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 15:44:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 15:44:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 15:44:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 15:44:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 15:44:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 15:44:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 15:44:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 15:44:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 15:44:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:44:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 15:44:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 15:44:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:44:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:44:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 15:44:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 15:44:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:44:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 15:44:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:44:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 15:44:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 15:44:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:44:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 15:44:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 15:44:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 15:44:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 15:44:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 15:44:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 15:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 15:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 15:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 15:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 15:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 15:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:44:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:44:21,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:44:21,100 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 15:44:21,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:44:21 BoogieIcfgContainer [2020-08-21 15:44:21,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:44:21,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:44:21,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:44:21,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:44:21,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:44:19" (1/3) ... [2020-08-21 15:44:21,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2a2538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:44:21, skipping insertion in model container [2020-08-21 15:44:21,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (2/3) ... [2020-08-21 15:44:21,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2a2538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:44:21, skipping insertion in model container [2020-08-21 15:44:21,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:44:21" (3/3) ... [2020-08-21 15:44:21,115 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-21 15:44:21,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:44:21,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:44:21,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:44:21,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:44:21,171 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:44:21,171 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:44:21,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:44:21,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:44:21,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:44:21,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:44:21,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:44:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 15:44:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 15:44:21,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:21,206 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 15:44:21,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:21,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 15:44:21,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:21,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283506292] [2020-08-21 15:44:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,713 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 15:44:21,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283506292] [2020-08-21 15:44:21,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:21,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:44:21,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993257536] [2020-08-21 15:44:21,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:44:21,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:21,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:44:21,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:44:21,740 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 15:44:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:22,143 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 15:44:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:44:22,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 15:44:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:22,158 INFO L225 Difference]: With dead ends: 343 [2020-08-21 15:44:22,159 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 15:44:22,165 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 15:44:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 15:44:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 15:44:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 15:44:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 15:44:22,233 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 15:44:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:22,234 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 15:44:22,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:44:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 15:44:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 15:44:22,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:22,238 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 15:44:22,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:44:22,239 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 15:44:22,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:22,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578778060] [2020-08-21 15:44:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,644 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 15:44:22,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578778060] [2020-08-21 15:44:22,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:22,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:44:22,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891135904] [2020-08-21 15:44:22,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:44:22,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:22,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:44:22,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:44:22,648 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 15:44:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:23,838 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 15:44:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:44:23,839 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 15:44:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:23,842 INFO L225 Difference]: With dead ends: 327 [2020-08-21 15:44:23,842 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 15:44:23,844 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 15:44:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 15:44:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 15:44:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 15:44:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 15:44:23,868 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 15:44:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:23,869 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 15:44:23,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:44:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 15:44:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:44:23,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:23,874 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 15:44:23,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:44:23,875 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:23,875 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 15:44:23,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:23,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817677754] [2020-08-21 15:44:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 15:44:25,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817677754] [2020-08-21 15:44:25,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:25,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-21 15:44:25,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308443529] [2020-08-21 15:44:25,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-21 15:44:25,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-21 15:44:25,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-21 15:44:25,724 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-21 15:44:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:28,880 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-21 15:44:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 15:44:28,881 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-21 15:44:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:28,885 INFO L225 Difference]: With dead ends: 348 [2020-08-21 15:44:28,887 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 15:44:28,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-21 15:44:28,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 15:44:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-21 15:44:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-21 15:44:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-21 15:44:28,917 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-21 15:44:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:28,918 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-21 15:44:28,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-21 15:44:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-21 15:44:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:44:28,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:28,921 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 15:44:28,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:44:28,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:28,922 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 15:44:28,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:28,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936305343] [2020-08-21 15:44:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:29,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,222 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 15:44:30,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936305343] [2020-08-21 15:44:30,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:30,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 15:44:30,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217616732] [2020-08-21 15:44:30,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 15:44:30,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:30,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 15:44:30,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:44:30,227 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-21 15:44:32,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:32,311 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-21 15:44:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 15:44:32,312 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 15:44:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:32,318 INFO L225 Difference]: With dead ends: 360 [2020-08-21 15:44:32,318 INFO L226 Difference]: Without dead ends: 193 [2020-08-21 15:44:32,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-21 15:44:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-21 15:44:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-21 15:44:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-21 15:44:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-21 15:44:32,342 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-21 15:44:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:32,343 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-21 15:44:32,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 15:44:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-21 15:44:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:44:32,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:32,346 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 15:44:32,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:44:32,347 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:32,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:32,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-21 15:44:32,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:32,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936453839] [2020-08-21 15:44:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:32,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-21 15:44:33,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936453839] [2020-08-21 15:44:33,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:33,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-21 15:44:33,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978064388] [2020-08-21 15:44:33,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-21 15:44:33,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:33,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-21 15:44:33,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-21 15:44:33,827 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-21 15:44:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:36,451 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-21 15:44:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 15:44:36,451 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-21 15:44:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:36,458 INFO L225 Difference]: With dead ends: 371 [2020-08-21 15:44:36,458 INFO L226 Difference]: Without dead ends: 198 [2020-08-21 15:44:36,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-21 15:44:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-21 15:44:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-21 15:44:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 15:44:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 15:44:36,490 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 15:44:36,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:36,491 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 15:44:36,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-21 15:44:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 15:44:36,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:44:36,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:36,495 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 15:44:36,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:44:36,495 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:36,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:36,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 15:44:36,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:36,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664474889] [2020-08-21 15:44:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:36,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,908 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 15:44:37,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664474889] [2020-08-21 15:44:37,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:37,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 15:44:37,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320181802] [2020-08-21 15:44:37,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 15:44:37,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:37,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 15:44:37,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:44:37,913 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-21 15:44:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:40,123 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-21 15:44:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 15:44:40,124 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 15:44:40,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:40,130 INFO L225 Difference]: With dead ends: 323 [2020-08-21 15:44:40,130 INFO L226 Difference]: Without dead ends: 254 [2020-08-21 15:44:40,134 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 15:44:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-21 15:44:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-21 15:44:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-21 15:44:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-21 15:44:40,166 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-21 15:44:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:40,170 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-21 15:44:40,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 15:44:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-21 15:44:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 15:44:40,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:40,178 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 15:44:40,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:44:40,179 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:40,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 15:44:40,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:40,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241290184] [2020-08-21 15:44:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:40,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:40,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:40,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:42,400 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-21 15:44:43,194 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-21 15:44:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:43,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:44,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:44,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,545 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-08-21 15:44:45,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:46,454 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-21 15:44:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat