/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:44:15,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:44:15,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:44:15,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:44:15,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:44:15,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:44:15,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:44:15,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:44:15,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:44:15,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:44:15,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:44:15,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:44:15,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:44:15,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:44:15,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:44:15,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:44:15,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:44:15,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:44:15,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:44:15,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:44:15,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:44:15,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:44:15,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:44:15,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:44:15,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:44:15,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:44:15,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:44:15,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:44:15,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:44:15,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:44:15,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:44:15,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:44:15,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:44:15,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:44:15,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:44:15,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:44:15,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:44:15,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:44:15,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:44:15,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:44:15,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:44:15,362 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 [2020-10-28 14:44:15,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:44:15,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:44:15,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:44:15,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:44:15,411 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:44:15,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:44:15,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:44:15,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:44:15,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:44:15,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:44:15,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:44:15,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:44:15,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:44:15,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:44:15,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:44:15,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:44:15,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:44:15,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:44:15,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:44:15,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:44:15,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:44:15,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:44:15,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:44:15,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:44:15,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:44:15,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:44:15,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:44:15,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:44:15,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:44:15,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:44:15,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:44:15,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:44:15,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:44:15,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:44:15,820 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:44:15,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-28 14:44:15,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9594d0007/0d661fe6f8d9476cae1dedd13271bf18/FLAGdf323128c [2020-10-28 14:44:16,542 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:44:16,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-28 14:44:16,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9594d0007/0d661fe6f8d9476cae1dedd13271bf18/FLAGdf323128c [2020-10-28 14:44:16,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9594d0007/0d661fe6f8d9476cae1dedd13271bf18 [2020-10-28 14:44:16,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:44:16,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:44:16,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:44:16,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:44:16,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:44:16,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:44:16" (1/1) ... [2020-10-28 14:44:16,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d21f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:16, skipping insertion in model container [2020-10-28 14:44:16,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:44:16" (1/1) ... [2020-10-28 14:44:16,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:44:16,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:44:17,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:44:17,295 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:44:17,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:44:17,418 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:44:17,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17 WrapperNode [2020-10-28 14:44:17,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:44:17,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:44:17,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:44:17,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:44:17,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (1/1) ... [2020-10-28 14:44:17,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (1/1) ... [2020-10-28 14:44:17,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (1/1) ... [2020-10-28 14:44:17,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (1/1) ... [2020-10-28 14:44:17,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (1/1) ... [2020-10-28 14:44:17,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (1/1) ... [2020-10-28 14:44:17,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (1/1) ... [2020-10-28 14:44:17,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:44:17,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:44:17,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:44:17,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:44:17,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (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 [2020-10-28 14:44:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:44:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:44:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:44:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:44:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:44:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-28 14:44:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-28 14:44:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-28 14:44:17,600 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:44:17,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:44:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:44:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:44:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:44:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:44:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:44:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:44:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:44:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:44:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:44:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:44:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:44:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:44:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:44:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:44:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:44:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:44:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:44:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:44:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:44:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:44:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:44:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:44:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:44:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:44:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:44:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-28 14:44:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-28 14:44:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-28 14:44:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:44:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:44:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:44:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:44:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:44:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:44:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:44:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:44:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:44:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:44:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:44:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:44:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:44:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:44:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:44:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:44:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:44:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:44:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:44:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:44:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:44:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:44:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:44:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:44:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:44:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:44:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:44:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:44:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:44:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:44:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:44:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:44:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:44:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:44:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:44:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:44:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:44:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:44:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:44:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:44:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:44:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:44:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:44:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:44:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:44:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:44:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:44:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:44:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:44:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:44:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:44:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:44:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:44:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:44:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:44:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:44:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:44:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:44:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:44:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:44:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:44:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:44:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:44:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:44:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:44:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:44:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:44:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:44:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:44:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:44:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:44:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:44:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:44:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:44:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:44:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:44:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:44:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:44:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:44:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:44:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:44:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:44:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:44:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:44:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:44:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:44:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:44:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:44:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:44:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:44:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:44:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:44:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:44:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:44:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:44:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:44:18,363 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:44:18,549 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:44:18,550 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 14:44:18,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:44:18 BoogieIcfgContainer [2020-10-28 14:44:18,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:44:18,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:44:18,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:44:18,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:44:18,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:44:16" (1/3) ... [2020-10-28 14:44:18,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39050e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:44:18, skipping insertion in model container [2020-10-28 14:44:18,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:17" (2/3) ... [2020-10-28 14:44:18,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39050e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:44:18, skipping insertion in model container [2020-10-28 14:44:18,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:44:18" (3/3) ... [2020-10-28 14:44:18,561 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-10-28 14:44:18,573 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:44:18,579 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:44:18,593 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:44:18,621 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:44:18,622 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:44:18,622 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:44:18,622 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:44:18,622 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:44:18,622 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:44:18,623 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:44:18,623 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:44:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 14:44:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 14:44:18,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:18,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:18,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:18,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1727656477, now seen corresponding path program 1 times [2020-10-28 14:44:18,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:18,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800455565] [2020-10-28 14:44:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:18,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:19,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:19,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:44:19,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:44:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-28 14:44:19,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:19,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 14:44:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:44:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:19,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:19,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:19,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:19,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:44:19,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:19,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:44:19,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800455565] [2020-10-28 14:44:19,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:19,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:44:19,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468518050] [2020-10-28 14:44:19,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:44:19,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:19,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:44:19,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:44:19,485 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 14:44:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:19,588 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2020-10-28 14:44:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:44:19,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-28 14:44:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:19,599 INFO L225 Difference]: With dead ends: 53 [2020-10-28 14:44:19,599 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 14:44:19,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:44:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 14:44:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 14:44:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 14:44:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-28 14:44:19,644 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2020-10-28 14:44:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:19,644 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-28 14:44:19,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:44:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-28 14:44:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:44:19,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:19,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:19,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:44:19,646 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:19,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2101667437, now seen corresponding path program 1 times [2020-10-28 14:44:19,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:19,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740669030] [2020-10-28 14:44:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:19,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:19,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 14:44:19,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:44:19,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:19,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:44:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:44:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:19,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:19,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:44:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:19,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:44:19,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740669030] [2020-10-28 14:44:19,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:19,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:44:19,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051036241] [2020-10-28 14:44:19,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:44:19,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:19,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:44:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:44:19,851 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2020-10-28 14:44:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:20,021 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-28 14:44:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:44:20,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-28 14:44:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:20,025 INFO L225 Difference]: With dead ends: 51 [2020-10-28 14:44:20,025 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 14:44:20,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:44:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 14:44:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2020-10-28 14:44:20,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 14:44:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-28 14:44:20,039 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 19 [2020-10-28 14:44:20,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:20,039 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-28 14:44:20,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:44:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-28 14:44:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:44:20,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:20,040 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:20,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:44:20,041 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:20,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1549917714, now seen corresponding path program 1 times [2020-10-28 14:44:20,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:20,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710410733] [2020-10-28 14:44:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:20,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:20,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:20,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:44:20,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 14:44:20,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:20,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:20,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:44:20,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:44:20,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:44:20,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:20,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:20,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:20,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:44:20,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:20,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:44:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:44:20,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710410733] [2020-10-28 14:44:20,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:20,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:44:20,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841257823] [2020-10-28 14:44:20,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:44:20,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:44:20,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:44:20,243 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 6 states. [2020-10-28 14:44:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:20,399 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-28 14:44:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:44:20,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-28 14:44:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:20,401 INFO L225 Difference]: With dead ends: 53 [2020-10-28 14:44:20,401 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 14:44:20,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:44:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 14:44:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2020-10-28 14:44:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 14:44:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-28 14:44:20,409 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 21 [2020-10-28 14:44:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:20,410 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-28 14:44:20,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:44:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-28 14:44:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:44:20,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:20,411 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:20,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:44:20,411 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1510356189, now seen corresponding path program 1 times [2020-10-28 14:44:20,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:20,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116200748] [2020-10-28 14:44:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:20,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:20,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:44:20,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:20,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:44:20,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:20,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:44:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:44:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:44:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:20,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:20,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:20,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:44:20,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:20,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:44:20,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116200748] [2020-10-28 14:44:20,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:20,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:44:20,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72415134] [2020-10-28 14:44:20,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:44:20,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:20,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:44:20,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:44:20,588 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2020-10-28 14:44:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:20,769 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-28 14:44:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:44:20,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-28 14:44:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:20,772 INFO L225 Difference]: With dead ends: 51 [2020-10-28 14:44:20,773 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 14:44:20,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:44:20,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 14:44:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2020-10-28 14:44:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 14:44:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 14:44:20,791 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-10-28 14:44:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:20,791 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 14:44:20,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:44:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 14:44:20,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:44:20,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:20,792 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:20,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:44:20,792 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:20,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1100497208, now seen corresponding path program 1 times [2020-10-28 14:44:20,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:20,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885338513] [2020-10-28 14:44:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:21,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:21,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:44:21,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:44:21,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-28 14:44:21,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:21,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:44:21,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:44:21,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:21,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:21,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:21,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:21,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:21,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:44:21,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:21,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:44:21,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885338513] [2020-10-28 14:44:21,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:21,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:44:21,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783064709] [2020-10-28 14:44:21,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:44:21,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:21,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:44:21,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:44:21,687 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-28 14:44:21,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:21,756 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-10-28 14:44:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:44:21,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 14:44:21,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:21,757 INFO L225 Difference]: With dead ends: 57 [2020-10-28 14:44:21,758 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 14:44:21,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:44:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 14:44:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-28 14:44:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 14:44:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-28 14:44:21,765 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 25 [2020-10-28 14:44:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:21,765 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-28 14:44:21,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:44:21,765 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-28 14:44:21,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:44:21,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:21,766 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:21,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:44:21,767 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:21,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:21,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1965028247, now seen corresponding path program 1 times [2020-10-28 14:44:21,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:21,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503412336] [2020-10-28 14:44:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:44:21,783 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:44:21,784 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:44:21,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:44:21,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:44:21 BoogieIcfgContainer [2020-10-28 14:44:21,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:44:21,807 INFO L168 Benchmark]: Toolchain (without parser) took 4948.97 ms. Allocated memory was 125.8 MB in the beginning and 181.4 MB in the end (delta: 55.6 MB). Free memory was 99.9 MB in the beginning and 69.2 MB in the end (delta: 30.7 MB). Peak memory consumption was 86.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:21,808 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 125.8 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:44:21,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.04 ms. Allocated memory is still 125.8 MB. Free memory was 99.2 MB in the beginning and 77.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:21,810 INFO L168 Benchmark]: Boogie Preprocessor took 71.32 ms. Allocated memory is still 125.8 MB. Free memory was 77.6 MB in the beginning and 75.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:21,811 INFO L168 Benchmark]: RCFGBuilder took 1058.05 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 75.1 MB in the beginning and 93.4 MB in the end (delta: -18.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:21,812 INFO L168 Benchmark]: TraceAbstraction took 3251.16 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 92.9 MB in the beginning and 69.2 MB in the end (delta: 23.8 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:21,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 125.8 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 553.04 ms. Allocated memory is still 125.8 MB. Free memory was 99.2 MB in the beginning and 77.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.32 ms. Allocated memory is still 125.8 MB. Free memory was 77.6 MB in the beginning and 75.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1058.05 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 75.1 MB in the beginning and 93.4 MB in the end (delta: -18.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3251.16 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 92.9 MB in the beginning and 69.2 MB in the end (delta: 23.8 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) [L536] p = a [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 1 [L543] t = (List) malloc(sizeof(struct node)) [L544] COND FALSE !(t == 0) [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a [L550] COND TRUE \read(flag) [L551] EXPR p->h [L551] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_flag-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 79 SDslu, 180 SDs, 0 SdLazy, 301 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 6884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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...