/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:02:08,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:02:08,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:02:08,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:02:08,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:02:08,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:02:08,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:02:08,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:02:08,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:02:08,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:02:08,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:02:08,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:02:08,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:02:08,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:02:08,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:02:08,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:02:08,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:02:08,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:02:08,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:02:08,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:02:08,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:02:08,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:02:08,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:02:08,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:02:09,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:02:09,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:02:09,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:02:09,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:02:09,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:02:09,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:02:09,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:02:09,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:02:09,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:02:09,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:02:09,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:02:09,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:02:09,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:02:09,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:02:09,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:02:09,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:02:09,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:02:09,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:02:09,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:02:09,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:02:09,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:02:09,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:02:09,057 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:02:09,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:02:09,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:02:09,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:02:09,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:02:09,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:02:09,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:02:09,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:02:09,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:02:09,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:02:09,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:02:09,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:02:09,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:02:09,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:02:09,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:02:09,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:02:09,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:02:09,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:02:09,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:02:09,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:02:09,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:02:09,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:02:09,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:02:09,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:02:09,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:02:09,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:02:09,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:02:09,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:02:09,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:02:09,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:02:09,577 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:02:09,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-24 16:02:09,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfc375be7/a4513b36e8534feeae57d633a2abba27/FLAGdf9f91b51 [2020-09-24 16:02:10,340 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:02:10,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-24 16:02:10,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfc375be7/a4513b36e8534feeae57d633a2abba27/FLAGdf9f91b51 [2020-09-24 16:02:10,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfc375be7/a4513b36e8534feeae57d633a2abba27 [2020-09-24 16:02:10,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:02:10,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:02:10,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:02:10,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:02:10,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:02:10,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:02:10" (1/1) ... [2020-09-24 16:02:10,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358c3c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:10, skipping insertion in model container [2020-09-24 16:02:10,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:02:10" (1/1) ... [2020-09-24 16:02:10,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:02:10,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:02:11,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:02:11,206 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:02:11,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:02:11,318 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:02:11,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11 WrapperNode [2020-09-24 16:02:11,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:02:11,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:02:11,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:02:11,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:02:11,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (1/1) ... [2020-09-24 16:02:11,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (1/1) ... [2020-09-24 16:02:11,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (1/1) ... [2020-09-24 16:02:11,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (1/1) ... [2020-09-24 16:02:11,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (1/1) ... [2020-09-24 16:02:11,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (1/1) ... [2020-09-24 16:02:11,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (1/1) ... [2020-09-24 16:02:11,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:02:11,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:02:11,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:02:11,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:02:11,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:02:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:02:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:02:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 16:02:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 16:02:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 16:02:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-24 16:02:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:02:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:02:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:02:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 16:02:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 16:02:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:02:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:02:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:02:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:02:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:02:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:02:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:02:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:02:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:02:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:02:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:02:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:02:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:02:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:02:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 16:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-24 16:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:02:11,857 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 16:02:12,096 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:02:12,097 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 16:02:12,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:02:12 BoogieIcfgContainer [2020-09-24 16:02:12,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:02:12,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:02:12,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:02:12,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:02:12,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:02:10" (1/3) ... [2020-09-24 16:02:12,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e89c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:02:12, skipping insertion in model container [2020-09-24 16:02:12,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:02:11" (2/3) ... [2020-09-24 16:02:12,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e89c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:02:12, skipping insertion in model container [2020-09-24 16:02:12,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:02:12" (3/3) ... [2020-09-24 16:02:12,113 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-24 16:02:12,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:02:12,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:02:12,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:02:12,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:02:12,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:02:12,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:02:12,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:02:12,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:02:12,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:02:12,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:02:12,199 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:02:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-24 16:02:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 16:02:12,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:12,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:12,256 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:12,264 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-24 16:02:12,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:12,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606618981] [2020-09-24 16:02:12,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:12,465 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:12,465 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:12,465 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:12,466 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:12,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 16:02:12,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:02:12,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 16:02:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:12,552 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:12,552 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:12,553 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:12,553 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:12,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:12,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:12,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:12,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:12,592 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:12,592 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:12,593 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:02:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:12,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 16:02:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:12,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:12,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606618981] [2020-09-24 16:02:12,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:12,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:12,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730023651] [2020-09-24 16:02:12,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:12,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:12,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:12,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:12,702 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-24 16:02:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:13,066 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-24 16:02:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:13,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-24 16:02:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:13,084 INFO L225 Difference]: With dead ends: 230 [2020-09-24 16:02:13,084 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 16:02:13,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:02:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 16:02:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-24 16:02:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 16:02:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-24 16:02:13,152 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-24 16:02:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:13,152 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-24 16:02:13,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-24 16:02:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 16:02:13,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:13,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:13,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:02:13,156 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:13,156 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-24 16:02:13,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:13,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222513761] [2020-09-24 16:02:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,224 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 16:02:13,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:02:13,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:02:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:13,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,274 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,274 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:13,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:13,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:13,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,313 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,313 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,313 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,313 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:02:13,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:02:13,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:02:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:02:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:13,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222513761] [2020-09-24 16:02:13,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:13,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:02:13,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679040558] [2020-09-24 16:02:13,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:02:13,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:13,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:02:13,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:02:13,369 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-24 16:02:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:13,704 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-24 16:02:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:02:13,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-24 16:02:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:13,707 INFO L225 Difference]: With dead ends: 172 [2020-09-24 16:02:13,707 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 16:02:13,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:02:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 16:02:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-24 16:02:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 16:02:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-24 16:02:13,722 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-24 16:02:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:13,723 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-24 16:02:13,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:02:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-24 16:02:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 16:02:13,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:13,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:13,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:02:13,726 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:13,726 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-24 16:02:13,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:13,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933362656] [2020-09-24 16:02:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,784 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,784 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,785 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,785 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 16:02:13,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:02:13,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:02:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:02:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:13,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,868 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:13,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:13,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:02:13,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,938 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,939 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,939 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 16:02:13,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:02:13,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:02:13,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:02:13,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 16:02:13,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:14,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933362656] [2020-09-24 16:02:14,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:14,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:02:14,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441047674] [2020-09-24 16:02:14,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:02:14,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:14,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:02:14,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:02:14,048 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 9 states. [2020-09-24 16:02:14,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:14,443 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-09-24 16:02:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:02:14,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 16:02:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:14,446 INFO L225 Difference]: With dead ends: 193 [2020-09-24 16:02:14,446 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 16:02:14,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:02:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 16:02:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-09-24 16:02:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 16:02:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-09-24 16:02:14,463 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 51 [2020-09-24 16:02:14,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:14,464 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-09-24 16:02:14,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:02:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-09-24 16:02:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 16:02:14,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:14,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:14,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:02:14,467 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:14,468 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-24 16:02:14,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:14,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109326541] [2020-09-24 16:02:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:14,516 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:14,517 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:14,517 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:14,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:14,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 16:02:14,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:14,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:02:14,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:02:14,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 16:02:14,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:14,567 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:14,567 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:14,568 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:14,568 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:14,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:14,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:14,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:14,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:14,620 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:14,620 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:14,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:14,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:14,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 16:02:14,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:02:14,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 16:02:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 16:02:14,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:14,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109326541] [2020-09-24 16:02:14,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:14,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 16:02:14,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427350788] [2020-09-24 16:02:14,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:02:14,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:14,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:02:14,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:02:14,700 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 7 states. [2020-09-24 16:02:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:14,967 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2020-09-24 16:02:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:02:14,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-09-24 16:02:14,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:14,969 INFO L225 Difference]: With dead ends: 195 [2020-09-24 16:02:14,970 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 16:02:14,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:02:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 16:02:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-09-24 16:02:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 16:02:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-09-24 16:02:14,981 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 70 [2020-09-24 16:02:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:14,981 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-09-24 16:02:14,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:02:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-09-24 16:02:14,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 16:02:14,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:14,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:14,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:02:14,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:14,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:14,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-24 16:02:14,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:14,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763403341] [2020-09-24 16:02:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,052 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,053 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,053 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 16:02:15,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 16:02:15,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:02:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 16:02:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,126 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,126 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,126 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:15,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:15,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:15,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,193 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,194 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,194 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 16:02:15,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 16:02:15,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:02:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:02:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 16:02:15,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:15,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763403341] [2020-09-24 16:02:15,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:15,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 16:02:15,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97288634] [2020-09-24 16:02:15,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:02:15,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:02:15,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:02:15,345 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 11 states. [2020-09-24 16:02:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:15,710 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2020-09-24 16:02:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:02:15,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-24 16:02:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:15,712 INFO L225 Difference]: With dead ends: 214 [2020-09-24 16:02:15,712 INFO L226 Difference]: Without dead ends: 154 [2020-09-24 16:02:15,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:02:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-24 16:02:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-09-24 16:02:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-24 16:02:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-09-24 16:02:15,740 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 71 [2020-09-24 16:02:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:15,740 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-09-24 16:02:15,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:02:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-09-24 16:02:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-24 16:02:15,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:15,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:15,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:02:15,744 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-09-24 16:02:15,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:15,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534086724] [2020-09-24 16:02:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,834 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,834 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,834 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,834 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 16:02:15,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 16:02:15,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:02:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 16:02:15,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,898 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,899 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,899 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,899 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:15,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:15,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:15,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:15,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,964 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,964 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,964 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,964 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 16:02:15,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 16:02:15,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:02:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:02:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 16:02:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:16,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534086724] [2020-09-24 16:02:16,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:16,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 16:02:16,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693500298] [2020-09-24 16:02:16,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:02:16,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:02:16,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:02:16,199 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 13 states. [2020-09-24 16:02:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:16,619 INFO L93 Difference]: Finished difference Result 235 states and 255 transitions. [2020-09-24 16:02:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:02:16,619 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-24 16:02:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:16,621 INFO L225 Difference]: With dead ends: 235 [2020-09-24 16:02:16,621 INFO L226 Difference]: Without dead ends: 175 [2020-09-24 16:02:16,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-09-24 16:02:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-24 16:02:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 156. [2020-09-24 16:02:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-24 16:02:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-09-24 16:02:16,631 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 91 [2020-09-24 16:02:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:16,631 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-09-24 16:02:16,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:02:16,631 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-09-24 16:02:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 16:02:16,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:16,633 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:16,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:02:16,634 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:16,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:16,634 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-09-24 16:02:16,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:16,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102179849] [2020-09-24 16:02:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:16,699 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:16,699 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:16,699 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:16,699 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 16:02:16,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 16:02:16,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:02:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 16:02:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:16,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:16,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:16,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:16,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:16,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:16,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:16,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:16,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:16,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:16,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:16,845 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:16,845 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:16,846 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:16,846 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:16,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 16:02:16,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:16,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 16:02:16,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:02:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:02:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 16:02:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:17,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102179849] [2020-09-24 16:02:17,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:17,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 16:02:17,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438116446] [2020-09-24 16:02:17,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 16:02:17,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:17,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 16:02:17,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:02:17,117 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 15 states. [2020-09-24 16:02:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:17,678 INFO L93 Difference]: Finished difference Result 256 states and 277 transitions. [2020-09-24 16:02:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 16:02:17,679 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-09-24 16:02:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:17,682 INFO L225 Difference]: With dead ends: 256 [2020-09-24 16:02:17,682 INFO L226 Difference]: Without dead ends: 196 [2020-09-24 16:02:17,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:02:17,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-24 16:02:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2020-09-24 16:02:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-24 16:02:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2020-09-24 16:02:17,699 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 111 [2020-09-24 16:02:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:17,701 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2020-09-24 16:02:17,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 16:02:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2020-09-24 16:02:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 16:02:17,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:17,711 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:17,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:02:17,711 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:17,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:17,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-09-24 16:02:17,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:17,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846392148] [2020-09-24 16:02:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:18,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:18,022 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:18,022 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:18,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:18,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 16:02:18,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:18,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 16:02:18,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:18,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:02:18,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 16:02:18,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 16:02:18,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:18,171 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:18,171 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:18,171 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:18,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:18,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:18,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:18,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:18,415 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:18,417 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:18,417 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:18,417 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:18,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 16:02:18,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:18,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 16:02:18,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:02:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 16:02:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 119 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 16:02:18,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846392148] [2020-09-24 16:02:18,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:18,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 16:02:18,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294865490] [2020-09-24 16:02:18,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 16:02:18,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:18,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 16:02:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:02:18,929 INFO L87 Difference]: Start difference. First operand 177 states and 190 transitions. Second operand 17 states. [2020-09-24 16:02:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:19,742 INFO L93 Difference]: Finished difference Result 286 states and 311 transitions. [2020-09-24 16:02:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:02:19,742 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2020-09-24 16:02:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:19,746 INFO L225 Difference]: With dead ends: 286 [2020-09-24 16:02:19,746 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 16:02:19,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:02:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 16:02:19,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 183. [2020-09-24 16:02:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-24 16:02:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2020-09-24 16:02:19,755 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 131 [2020-09-24 16:02:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:19,756 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2020-09-24 16:02:19,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 16:02:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2020-09-24 16:02:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 16:02:19,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:19,758 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:19,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:02:19,759 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:19,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1200683152, now seen corresponding path program 1 times [2020-09-24 16:02:19,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:19,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062554776] [2020-09-24 16:02:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:19,995 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:02:19,996 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -59 [2020-09-24 16:02:19,996 FATAL L256 erpolLogProxyWrapper]: Difference in width: 59 [2020-09-24 16:02:19,996 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:19,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 16:02:19,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 16:02:19,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:02:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 16:02:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 16:02:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:20,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:20,231 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:20,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:20,232 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:20,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:20,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:20,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:20,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:20,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:20,437 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:20,438 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:20,438 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:20,438 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:20,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 16:02:20,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 16:02:20,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:02:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 16:02:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 16:02:20,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062554776] [2020-09-24 16:02:20,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:20,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 16:02:20,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484219553] [2020-09-24 16:02:20,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 16:02:20,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:20,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 16:02:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:02:20,796 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand 18 states. [2020-09-24 16:02:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:21,990 INFO L93 Difference]: Finished difference Result 286 states and 310 transitions. [2020-09-24 16:02:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 16:02:21,991 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-09-24 16:02:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:21,993 INFO L225 Difference]: With dead ends: 286 [2020-09-24 16:02:21,993 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 16:02:21,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 16:02:21,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 16:02:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 187. [2020-09-24 16:02:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-24 16:02:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2020-09-24 16:02:22,003 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 133 [2020-09-24 16:02:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:22,003 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2020-09-24 16:02:22,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 16:02:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2020-09-24 16:02:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 16:02:22,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:22,005 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:22,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:02:22,006 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:22,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2062394754, now seen corresponding path program 1 times [2020-09-24 16:02:22,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:22,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351214827] [2020-09-24 16:02:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:22,213 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:22,214 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:22,214 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:22,214 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 16:02:22,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 16:02:22,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:02:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 16:02:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 16:02:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:22,328 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:22,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:22,329 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:22,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 16:02:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:22,510 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:22,510 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:22,510 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:22,511 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:22,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 16:02:22,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:22,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 16:02:22,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:02:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 16:02:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 119 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 16:02:23,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351214827] [2020-09-24 16:02:23,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:23,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 16:02:23,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910160923] [2020-09-24 16:02:23,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 16:02:23,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:23,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 16:02:23,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:02:23,026 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand 17 states. [2020-09-24 16:02:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:23,898 INFO L93 Difference]: Finished difference Result 259 states and 278 transitions. [2020-09-24 16:02:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:02:23,898 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 135 [2020-09-24 16:02:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:23,900 INFO L225 Difference]: With dead ends: 259 [2020-09-24 16:02:23,900 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 16:02:23,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:02:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 16:02:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 195. [2020-09-24 16:02:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 16:02:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2020-09-24 16:02:23,916 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 135 [2020-09-24 16:02:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:23,917 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2020-09-24 16:02:23,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 16:02:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2020-09-24 16:02:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 16:02:23,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:23,919 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:23,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:02:23,919 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:23,919 INFO L82 PathProgramCache]: Analyzing trace with hash -414346707, now seen corresponding path program 1 times [2020-09-24 16:02:23,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:23,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341013611] [2020-09-24 16:02:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:02:24,007 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:02:24,007 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:02:24,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:02:24,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:02:24 BoogieIcfgContainer [2020-09-24 16:02:24,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:02:24,059 INFO L168 Benchmark]: Toolchain (without parser) took 13418.79 ms. Allocated memory was 139.5 MB in the beginning and 389.0 MB in the end (delta: 249.6 MB). Free memory was 100.0 MB in the beginning and 260.1 MB in the end (delta: -160.1 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:24,060 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:02:24,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.66 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 99.4 MB in the beginning and 168.0 MB in the end (delta: -68.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:24,062 INFO L168 Benchmark]: Boogie Preprocessor took 74.74 ms. Allocated memory is still 202.4 MB. Free memory was 168.0 MB in the beginning and 165.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:24,062 INFO L168 Benchmark]: RCFGBuilder took 708.30 ms. Allocated memory is still 202.4 MB. Free memory was 165.4 MB in the beginning and 114.8 MB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:24,063 INFO L168 Benchmark]: TraceAbstraction took 11951.19 ms. Allocated memory was 202.4 MB in the beginning and 389.0 MB in the end (delta: 186.6 MB). Free memory was 114.1 MB in the beginning and 260.1 MB in the end (delta: -146.0 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:24,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.66 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 99.4 MB in the beginning and 168.0 MB in the end (delta: -68.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.74 ms. Allocated memory is still 202.4 MB. Free memory was 168.0 MB in the beginning and 165.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 708.30 ms. Allocated memory is still 202.4 MB. Free memory was 165.4 MB in the beginning and 114.8 MB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11951.19 ms. Allocated memory was 202.4 MB in the beginning and 389.0 MB in the end (delta: 186.6 MB). Free memory was 114.1 MB in the beginning and 260.1 MB in the end (delta: -146.0 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 605]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L588] const int len = 5; [L589] CALL, EXPR dll_create(len) [L568] DLL head = ((void *)0); [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND FALSE !(\read(head)) [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND FALSE !(len > 0) [L585] return head; [L589] RET, EXPR dll_create(len) [L589] DLL head = dll_create(len); [L590] head->next [L590] COND TRUE head->next [L591] EXPR head->data_0 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] EXPR head->data_1 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] EXPR head->data_2 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L605] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 918 SDtfs, 1468 SDslu, 5762 SDs, 0 SdLazy, 3224 SolverSat, 190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 284 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 992 NumberOfCodeBlocks, 992 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 847 ConstructedInterpolants, 0 QuantifiedInterpolants, 342351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 556/828 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...