/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:07:05,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:07:05,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:07:05,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:07:05,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:07:05,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:07:05,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:07:05,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:07:05,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:07:05,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:07:05,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:07:05,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:07:05,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:07:05,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:07:05,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:07:05,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:07:05,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:07:05,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:07:05,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:07:05,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:07:05,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:07:05,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:07:05,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:07:05,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:07:05,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:07:05,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:07:05,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:07:05,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:07:05,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:07:05,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:07:05,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:07:05,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:07:05,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:07:05,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:07:05,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:07:05,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:07:05,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:07:05,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:07:05,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:07:05,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:07:05,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:07:05,306 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 17:07:05,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:07:05,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:07:05,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:07:05,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:07:05,366 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:07:05,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:07:05,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:07:05,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:07:05,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:07:05,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:07:05,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:07:05,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:07:05,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:07:05,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:07:05,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:07:05,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:07:05,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:07:05,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:07:05,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:07:05,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:07:05,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:07:05,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:07:05,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:07:05,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:07:05,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:07:05,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:07:05,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:07:05,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:07:05,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:07:05,372 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;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;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;log-additional-information=true; [2020-09-24 17:07:05,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:07:05,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:07:05,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:07:05,921 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:07:05,921 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:07:05,922 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-24 17:07:06,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb1beef89/dc14a20f23d94aa993ed349511e3e22f/FLAGf76596536 [2020-09-24 17:07:06,668 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:07:06,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-24 17:07:06,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb1beef89/dc14a20f23d94aa993ed349511e3e22f/FLAGf76596536 [2020-09-24 17:07:06,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb1beef89/dc14a20f23d94aa993ed349511e3e22f [2020-09-24 17:07:06,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:07:06,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:07:06,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:06,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:07:06,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:07:06,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:06" (1/1) ... [2020-09-24 17:07:06,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:06, skipping insertion in model container [2020-09-24 17:07:06,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:06" (1/1) ... [2020-09-24 17:07:06,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:07:06,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:07:07,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:07,491 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:07:07,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:07,627 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:07:07,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07 WrapperNode [2020-09-24 17:07:07,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:07,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:07:07,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:07:07,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:07:07,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (1/1) ... [2020-09-24 17:07:07,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (1/1) ... [2020-09-24 17:07:07,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (1/1) ... [2020-09-24 17:07:07,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (1/1) ... [2020-09-24 17:07:07,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (1/1) ... [2020-09-24 17:07:07,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (1/1) ... [2020-09-24 17:07:07,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (1/1) ... [2020-09-24 17:07:07,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:07:07,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:07:07,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:07:07,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:07:07,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (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 17:07:07,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:07:07,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:07:07,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:07:07,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 17:07:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 17:07:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 17:07:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 17:07:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 17:07:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-24 17:07:07,792 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-24 17:07:07,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:07:07,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:07:07,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:07:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 17:07:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 17:07:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 17:07:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 17:07:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 17:07:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 17:07:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 17:07:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 17:07:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 17:07:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 17:07:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 17:07:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 17:07:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 17:07:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 17:07:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 17:07:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 17:07:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 17:07:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 17:07:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 17:07:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 17:07:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 17:07:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 17:07:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 17:07:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 17:07:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 17:07:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 17:07:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 17:07:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 17:07:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 17:07:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 17:07:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 17:07:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 17:07:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 17:07:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 17:07:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 17:07:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 17:07:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 17:07:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 17:07:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 17:07:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 17:07:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 17:07:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 17:07:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 17:07:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 17:07:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 17:07:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 17:07:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 17:07:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 17:07:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 17:07:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 17:07:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 17:07:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 17:07:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 17:07:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 17:07:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 17:07:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:07:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:07:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 17:07:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:07:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 17:07:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 17:07:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 17:07:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 17:07:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:07:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 17:07:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 17:07:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 17:07:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:07:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 17:07:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 17:07:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 17:07:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 17:07:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 17:07:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 17:07:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 17:07:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 17:07:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 17:07:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 17:07:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 17:07:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 17:07:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 17:07:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 17:07:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 17:07:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 17:07:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 17:07:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 17:07:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 17:07:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 17:07:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 17:07:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 17:07:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 17:07:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 17:07:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 17:07:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 17:07:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 17:07:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 17:07:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 17:07:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 17:07:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 17:07:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 17:07:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 17:07:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 17:07:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 17:07:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 17:07:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 17:07:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 17:07:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 17:07:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-24 17:07:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:07:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:07:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-24 17:07:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:07:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:07:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:07:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:07:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:07:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:07:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:07:08,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:07:08,437 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 17:07:08,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:08 BoogieIcfgContainer [2020-09-24 17:07:08,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:07:08,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:07:08,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:07:08,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:07:08,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:07:06" (1/3) ... [2020-09-24 17:07:08,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c027f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:08, skipping insertion in model container [2020-09-24 17:07:08,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:07" (2/3) ... [2020-09-24 17:07:08,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c027f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:08, skipping insertion in model container [2020-09-24 17:07:08,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:08" (3/3) ... [2020-09-24 17:07:08,454 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-24 17:07:08,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:07:08,478 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:07:08,502 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:07:08,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:07:08,537 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:07:08,537 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:07:08,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:07:08,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:07:08,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:07:08,538 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:07:08,538 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:07:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 17:07:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 17:07:08,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:08,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2020-09-24 17:07:08,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:08,588 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-24 17:07:08,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:08,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706990479] [2020-09-24 17:07:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:09,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:24,672 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:24,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:07:24,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:07:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15796 [2020-09-24 17:07:24,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:07:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 17:07:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:07:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:07:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:24,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:24,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:24,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:07:24,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:07:24,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:07:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:07:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:24,924 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:24,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:24,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 17:07:24,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:07:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:24,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:07:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:25,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:25,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:25,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 17:07:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:07:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:25,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 17:07:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:25,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:25,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:25,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:25,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:07:25,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:25,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:25,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 17:07:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:25,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:25,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:25,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:07:25,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:25,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:25,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 17:07:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:25,208 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:25,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:07:25,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:07:25,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:07:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 17:07:25,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706990479] [2020-09-24 17:07:25,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:25,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:07:25,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161921480] [2020-09-24 17:07:25,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:07:25,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:25,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:07:25,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:07:25,301 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-09-24 17:07:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:26,224 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-09-24 17:07:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 17:07:26,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-24 17:07:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:26,246 INFO L225 Difference]: With dead ends: 187 [2020-09-24 17:07:26,246 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 17:07:26,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:07:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 17:07:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-24 17:07:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 17:07:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-24 17:07:26,361 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-09-24 17:07:26,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:26,362 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-24 17:07:26,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:07:26,362 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-24 17:07:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 17:07:26,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:26,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:26,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:07:26,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:26,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-24 17:07:26,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:26,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280131026] [2020-09-24 17:07:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:27,347 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:27,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-24 17:07:27,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-09-24 17:07:27,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:07:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 17:07:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:07:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:27,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:27,452 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:27,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:07:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:27,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:07:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:27,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:27,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:27,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:27,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:07:27,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:27,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:07:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:27,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:27,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:27,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 17:07:27,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:27,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 17:07:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:27,597 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:27,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:07:27,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:07:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:27,727 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:27,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:27,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 17:07:27,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:27,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:07:27,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 17:07:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:27,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:27,860 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:27,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:27,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 17:07:27,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 17:07:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:07:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 17:07:27,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280131026] [2020-09-24 17:07:27,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:27,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 17:07:27,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943497343] [2020-09-24 17:07:27,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:07:27,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:07:27,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:07:27,933 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-24 17:07:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:28,692 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-24 17:07:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 17:07:28,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-24 17:07:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:28,701 INFO L225 Difference]: With dead ends: 113 [2020-09-24 17:07:28,701 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 17:07:28,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:07:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 17:07:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-24 17:07:28,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 17:07:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-24 17:07:28,729 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-24 17:07:28,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:28,730 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-24 17:07:28,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:07:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-24 17:07:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-24 17:07:28,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:28,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:28,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:07:28,737 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:28,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-24 17:07:28,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:28,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092553460] [2020-09-24 17:07:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:28,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:29,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:29,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:07:29,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-09-24 17:07:29,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:07:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 17:07:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 17:07:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:29,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:29,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:07:29,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:29,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:29,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:29,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:07:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:29,827 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:29,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:29,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:07:29,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:29,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:07:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:29,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:29,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:29,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:29,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:07:29,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:29,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 17:07:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:29,886 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:29,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:29,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:29,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:07:29,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:29,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:07:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:29,994 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:29,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:29,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 17:07:29,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:07:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:07:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:30,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 17:07:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:30,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:30,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:30,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 17:07:30,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:30,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 17:07:30,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:07:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 17:07:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:07:30,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-24 17:07:30,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092553460] [2020-09-24 17:07:30,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:30,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 17:07:30,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336843817] [2020-09-24 17:07:30,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:07:30,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:30,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:07:30,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:07:30,397 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-24 17:07:31,245 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-09-24 17:07:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:31,658 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-24 17:07:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 17:07:31,659 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-24 17:07:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:31,665 INFO L225 Difference]: With dead ends: 95 [2020-09-24 17:07:31,665 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 17:07:31,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:07:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 17:07:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-24 17:07:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 17:07:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-24 17:07:31,686 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-24 17:07:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:31,691 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-24 17:07:31,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:07:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-24 17:07:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-24 17:07:31,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:31,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:31,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:07:31,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-24 17:07:31,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:31,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426928677] [2020-09-24 17:07:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 17:07:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 17:07:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9380 [2020-09-24 17:07:41,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:07:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 17:07:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 17:07:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:41,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,214 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:07:41,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:41,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:41,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:07:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,265 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:41,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:07:41,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:07:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:41,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:07:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 17:07:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,387 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 17:07:41,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:07:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:07:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:41,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 17:07:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:07:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:07:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 17:07:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:07:41,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:41,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 17:07:41,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:07:41,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 17:07:41,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:07:41,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 17:07:41,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426928677] [2020-09-24 17:07:41,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:41,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:07:41,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097917411] [2020-09-24 17:07:41,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:07:41,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:41,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:07:41,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:07:41,860 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 16 states. [2020-09-24 17:07:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:43,634 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-09-24 17:07:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 17:07:43,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-24 17:07:43,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:43,637 INFO L225 Difference]: With dead ends: 134 [2020-09-24 17:07:43,637 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 17:07:43,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=261, Invalid=1221, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 17:07:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 17:07:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2020-09-24 17:07:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 17:07:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-24 17:07:43,649 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 99 [2020-09-24 17:07:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:43,650 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-24 17:07:43,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:07:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-24 17:07:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 17:07:43,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:43,652 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:43,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:07:43,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:43,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:43,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1242921541, now seen corresponding path program 1 times [2020-09-24 17:07:43,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:43,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682243095] [2020-09-24 17:07:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:51,998 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:51,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 17:07:51,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8305 [2020-09-24 17:07:51,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:07:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 17:07:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 17:07:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,142 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:07:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:52,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:07:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,198 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:52,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:07:52,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:52,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:07:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,222 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:52,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:07:52,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 17:07:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,373 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:52,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 17:07:52,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:07:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:07:52,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:07:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 17:07:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 17:07:52,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:07:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:07:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 17:07:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat