/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 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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:25:51,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:25:51,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:25:52,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:25:52,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:25:52,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:25:52,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:25:52,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:25:52,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:25:52,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:25:52,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:25:52,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:25:52,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:25:52,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:25:52,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:25:52,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:25:52,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:25:52,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:25:52,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:25:52,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:25:52,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:25:52,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:25:52,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:25:52,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:25:52,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:25:52,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:25:52,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:25:52,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:25:52,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:25:52,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:25:52,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:25:52,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:25:52,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:25:52,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:25:52,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:25:52,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:25:52,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:25:52,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:25:52,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:25:52,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:25:52,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:25:52,053 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 [2020-10-14 23:25:52,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:25:52,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:25:52,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:25:52,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:25:52,078 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:25:52,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:25:52,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:25:52,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:25:52,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:25:52,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:25:52,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:25:52,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:25:52,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:25:52,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:25:52,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:25:52,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:25:52,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:25:52,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:25:52,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:25:52,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:25:52,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:25:52,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:25:52,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:25:52,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:25:52,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:25:52,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:25:52,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:25:52,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:25:52,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:25:52,083 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 -> 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:25:52,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:25:52,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:25:52,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:25:52,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:25:52,431 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:25:52,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-1.i [2020-10-14 23:25:52,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/911d0235b/6f8b756ad4704798b79564aa210b856b/FLAG8133cd66d [2020-10-14 23:25:53,075 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:25:53,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-1.i [2020-10-14 23:25:53,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/911d0235b/6f8b756ad4704798b79564aa210b856b/FLAG8133cd66d [2020-10-14 23:25:53,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/911d0235b/6f8b756ad4704798b79564aa210b856b [2020-10-14 23:25:53,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:25:53,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:25:53,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:25:53,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:25:53,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:25:53,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:25:53" (1/1) ... [2020-10-14 23:25:53,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126dddf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:53, skipping insertion in model container [2020-10-14 23:25:53,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:25:53" (1/1) ... [2020-10-14 23:25:53,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:25:53,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:25:53,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:25:53,961 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:25:54,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:25:54,181 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:25:54,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54 WrapperNode [2020-10-14 23:25:54,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:25:54,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:25:54,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:25:54,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:25:54,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (1/1) ... [2020-10-14 23:25:54,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (1/1) ... [2020-10-14 23:25:54,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (1/1) ... [2020-10-14 23:25:54,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (1/1) ... [2020-10-14 23:25:54,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (1/1) ... [2020-10-14 23:25:54,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (1/1) ... [2020-10-14 23:25:54,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (1/1) ... [2020-10-14 23:25:54,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:25:54,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:25:54,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:25:54,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:25:54,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (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 [2020-10-14 23:25:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:25:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:25:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:25:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:25:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-14 23:25:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2020-10-14 23:25:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-10-14 23:25:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2020-10-14 23:25:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-14 23:25:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2020-10-14 23:25:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2020-10-14 23:25:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2020-10-14 23:25:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2020-10-14 23:25:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2020-10-14 23:25:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2020-10-14 23:25:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2020-10-14 23:25:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:25:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:25:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:25:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:25:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:25:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:25:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:25:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:25:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:25:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:25:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:25:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:25:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:25:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:25:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:25:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:25:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:25:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:25:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:25:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:25:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:25:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:25:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:25:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:25:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:25:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:25:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:25:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:25:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:25:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:25:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:25:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:25:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:25:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:25:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:25:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:25:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:25:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:25:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:25:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:25:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:25:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:25:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:25:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:25:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:25:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:25:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:25:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:25:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:25:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:25:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:25:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:25:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:25:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:25:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:25:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:25:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:25:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:25:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:25:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:25:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:25:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:25:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:25:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:25:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:25:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:25:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:25:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:25:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:25:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:25:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:25:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:25:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:25:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:25:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:25:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:25:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:25:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:25:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:25:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:25:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:25:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:25:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:25:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:25:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:25:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:25:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:25:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:25:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:25:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:25:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:25:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:25:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:25:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:25:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:25:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:25:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:25:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:25:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:25:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:25:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:25:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:25:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:25:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:25:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-14 23:25:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-14 23:25:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-14 23:25:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-14 23:25:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-14 23:25:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-14 23:25:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-14 23:25:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-14 23:25:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-14 23:25:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-14 23:25:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-14 23:25:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-14 23:25:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-14 23:25:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-14 23:25:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-14 23:25:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-14 23:25:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-14 23:25:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-14 23:25:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-14 23:25:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-14 23:25:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-14 23:25:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-14 23:25:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-14 23:25:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-14 23:25:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-14 23:25:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-14 23:25:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-14 23:25:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-14 23:25:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-14 23:25:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-14 23:25:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-14 23:25:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-14 23:25:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-14 23:25:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-14 23:25:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-14 23:25:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-14 23:25:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-14 23:25:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-14 23:25:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-14 23:25:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-14 23:25:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-14 23:25:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-14 23:25:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-14 23:25:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-14 23:25:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-14 23:25:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-14 23:25:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-14 23:25:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-14 23:25:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-14 23:25:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-14 23:25:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-14 23:25:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-14 23:25:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-14 23:25:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-14 23:25:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-14 23:25:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-14 23:25:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-14 23:25:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-14 23:25:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-14 23:25:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-14 23:25:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-14 23:25:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-14 23:25:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-14 23:25:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-14 23:25:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-14 23:25:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-14 23:25:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-14 23:25:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-14 23:25:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-14 23:25:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-14 23:25:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-14 23:25:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-14 23:25:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-14 23:25:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-14 23:25:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-14 23:25:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-14 23:25:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-14 23:25:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-14 23:25:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-14 23:25:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-14 23:25:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-14 23:25:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-14 23:25:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-14 23:25:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-14 23:25:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-14 23:25:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-14 23:25:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-14 23:25:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-14 23:25:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-14 23:25:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-14 23:25:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-14 23:25:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-14 23:25:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-14 23:25:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-14 23:25:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-14 23:25:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-14 23:25:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-14 23:25:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-14 23:25:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-14 23:25:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-14 23:25:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-14 23:25:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:25:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-14 23:25:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2020-10-14 23:25:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:25:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-10-14 23:25:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:25:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2020-10-14 23:25:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-14 23:25:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2020-10-14 23:25:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2020-10-14 23:25:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:25:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:25:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2020-10-14 23:25:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2020-10-14 23:25:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:25:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2020-10-14 23:25:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:25:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2020-10-14 23:25:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2020-10-14 23:25:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:25:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:25:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:25:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:25:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:25:55,293 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:25:55,293 INFO L295 CfgBuilder]: Removed 41 assume(true) statements. [2020-10-14 23:25:55,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:25:55 BoogieIcfgContainer [2020-10-14 23:25:55,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:25:55,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:25:55,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:25:55,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:25:55,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:25:53" (1/3) ... [2020-10-14 23:25:55,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e22d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:25:55, skipping insertion in model container [2020-10-14 23:25:55,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:25:54" (2/3) ... [2020-10-14 23:25:55,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e22d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:25:55, skipping insertion in model container [2020-10-14 23:25:55,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:25:55" (3/3) ... [2020-10-14 23:25:55,307 INFO L109 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2020-10-14 23:25:55,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:25:55,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:25:55,342 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:25:55,369 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:25:55,370 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:25:55,370 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:25:55,370 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:25:55,370 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:25:55,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:25:55,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:25:55,371 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:25:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2020-10-14 23:25:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:25:55,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:55,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:55,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:55,410 INFO L82 PathProgramCache]: Analyzing trace with hash -663354135, now seen corresponding path program 1 times [2020-10-14 23:25:55,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:55,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927238975] [2020-10-14 23:25:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:55,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:55,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:25:55,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 23:25:55,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:55,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:25:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:25:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:25:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:25:56,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:56,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:56,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:56,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:25:56,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:56,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:56,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:25:56,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:25:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:56,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:56,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:56,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:56,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:25:56,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:56,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:56,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:56,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927238975] [2020-10-14 23:25:56,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:25:56,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:25:56,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771919803] [2020-10-14 23:25:56,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:25:56,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:56,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:25:56,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:25:56,113 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 7 states. [2020-10-14 23:25:57,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:57,102 INFO L93 Difference]: Finished difference Result 301 states and 487 transitions. [2020-10-14 23:25:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:25:57,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-14 23:25:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:57,122 INFO L225 Difference]: With dead ends: 301 [2020-10-14 23:25:57,123 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 23:25:57,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 23:25:57,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 129. [2020-10-14 23:25:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 23:25:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-10-14 23:25:57,252 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 14 [2020-10-14 23:25:57,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:57,253 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-10-14 23:25:57,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:25:57,253 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-10-14 23:25:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:57,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:57,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:57,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:25:57,257 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:57,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:57,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1411633869, now seen corresponding path program 1 times [2020-10-14 23:25:57,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:57,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209218997] [2020-10-14 23:25:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:25:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-14 23:25:57,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:25:57,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:25:57,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:57,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:25:57,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:25:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:25:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:58,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:25:58,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 23:25:58,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:58,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:25:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:25:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:58,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:58,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:25:58,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:58,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 23:25:58,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:58,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:25:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:25:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:25:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:58,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:58,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:25:58,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 23:25:58,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:58,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:25:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:58,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:25:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:58,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:58,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:58,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:58,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:58,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:25:58,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:58,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:25:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:25:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:58,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209218997] [2020-10-14 23:25:58,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:25:58,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-14 23:25:58,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32929109] [2020-10-14 23:25:58,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:58,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:58,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:58,686 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 16 states. [2020-10-14 23:26:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:00,931 INFO L93 Difference]: Finished difference Result 244 states and 291 transitions. [2020-10-14 23:26:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:26:00,932 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 23:26:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:00,936 INFO L225 Difference]: With dead ends: 244 [2020-10-14 23:26:00,936 INFO L226 Difference]: Without dead ends: 238 [2020-10-14 23:26:00,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:26:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-14 23:26:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 209. [2020-10-14 23:26:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-14 23:26:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 251 transitions. [2020-10-14 23:26:00,973 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 251 transitions. Word has length 37 [2020-10-14 23:26:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:00,973 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 251 transitions. [2020-10-14 23:26:00,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:26:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 251 transitions. [2020-10-14 23:26:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:26:00,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:00,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:00,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:26:00,975 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:00,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:00,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2082496891, now seen corresponding path program 1 times [2020-10-14 23:26:00,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:00,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608754987] [2020-10-14 23:26:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:01,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:01,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:26:01,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-14 23:26:01,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:01,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:26:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:26:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:01,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:01,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:01,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:01,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:26:01,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:01,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:02,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:02,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:26:02,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-14 23:26:02,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:02,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:02,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:03,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-14 23:26:03,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:03,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:03,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 23:26:03,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:03,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:03,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:26:03,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:03,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608754987] [2020-10-14 23:26:03,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:26:03,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-14 23:26:03,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949387913] [2020-10-14 23:26:03,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:26:03,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:26:03,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:26:03,786 INFO L87 Difference]: Start difference. First operand 209 states and 251 transitions. Second operand 18 states. [2020-10-14 23:26:05,052 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-14 23:26:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:07,191 INFO L93 Difference]: Finished difference Result 329 states and 399 transitions. [2020-10-14 23:26:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:26:07,192 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-10-14 23:26:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:07,200 INFO L225 Difference]: With dead ends: 329 [2020-10-14 23:26:07,200 INFO L226 Difference]: Without dead ends: 326 [2020-10-14 23:26:07,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:26:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-14 23:26:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 290. [2020-10-14 23:26:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 23:26:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 353 transitions. [2020-10-14 23:26:07,267 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 353 transitions. Word has length 40 [2020-10-14 23:26:07,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:07,268 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 353 transitions. [2020-10-14 23:26:07,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:26:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 353 transitions. [2020-10-14 23:26:07,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:26:07,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:07,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:07,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:26:07,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:07,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1376068061, now seen corresponding path program 1 times [2020-10-14 23:26:07,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:07,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641663532] [2020-10-14 23:26:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:07,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:07,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:26:07,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-14 23:26:07,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:07,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:26:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:26:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:07,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:07,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:07,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:08,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:26:08,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:08,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:08,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:08,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:08,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:08,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:26:08,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 23:26:08,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:08,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:08,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:08,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:08,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:08,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:08,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:08,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:08,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:08,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 23:26:08,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:08,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:08,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:08,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:08,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:08,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:26:08,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:08,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:08,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:09,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:09,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:09,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:09,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:26:09,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:09,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:09,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641663532] [2020-10-14 23:26:09,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:26:09,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-14 23:26:09,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737924752] [2020-10-14 23:26:09,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:26:09,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:09,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:26:09,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:09,108 INFO L87 Difference]: Start difference. First operand 290 states and 353 transitions. Second operand 19 states. [2020-10-14 23:26:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:11,973 INFO L93 Difference]: Finished difference Result 320 states and 386 transitions. [2020-10-14 23:26:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:26:11,974 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 43 [2020-10-14 23:26:11,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:11,977 INFO L225 Difference]: With dead ends: 320 [2020-10-14 23:26:11,977 INFO L226 Difference]: Without dead ends: 317 [2020-10-14 23:26:11,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=203, Invalid=1057, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:26:11,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-14 23:26:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 290. [2020-10-14 23:26:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 23:26:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 352 transitions. [2020-10-14 23:26:12,008 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 352 transitions. Word has length 43 [2020-10-14 23:26:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:12,008 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 352 transitions. [2020-10-14 23:26:12,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:26:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 352 transitions. [2020-10-14 23:26:12,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:26:12,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:12,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:12,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:26:12,011 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:12,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:12,011 INFO L82 PathProgramCache]: Analyzing trace with hash 796266502, now seen corresponding path program 1 times [2020-10-14 23:26:12,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:12,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329980519] [2020-10-14 23:26:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:12,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:12,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:26:12,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-14 23:26:12,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:12,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:26:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:26:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:12,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:12,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:12,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:12,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:26:12,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:12,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:12,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:12,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:26:13,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 23:26:13,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:13,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 23:26:13,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:13,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:13,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 23:26:13,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:14,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:14,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:14,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:14,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:14,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:26:14,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:14,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:26:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:14,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329980519] [2020-10-14 23:26:14,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:26:14,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-14 23:26:14,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026190516] [2020-10-14 23:26:14,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:26:14,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:14,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:26:14,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:14,230 INFO L87 Difference]: Start difference. First operand 290 states and 352 transitions. Second operand 19 states. [2020-10-14 23:26:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:17,706 INFO L93 Difference]: Finished difference Result 323 states and 389 transitions. [2020-10-14 23:26:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:26:17,708 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2020-10-14 23:26:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:17,711 INFO L225 Difference]: With dead ends: 323 [2020-10-14 23:26:17,711 INFO L226 Difference]: Without dead ends: 320 [2020-10-14 23:26:17,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:26:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-14 23:26:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 290. [2020-10-14 23:26:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 23:26:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 351 transitions. [2020-10-14 23:26:17,739 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 351 transitions. Word has length 46 [2020-10-14 23:26:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:17,740 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 351 transitions. [2020-10-14 23:26:17,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:26:17,740 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 351 transitions. [2020-10-14 23:26:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:26:17,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:17,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:17,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:26:17,742 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash 262392368, now seen corresponding path program 1 times [2020-10-14 23:26:17,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:17,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313725624] [2020-10-14 23:26:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:19,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:19,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:26:19,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:19,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-10-14 23:26:19,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:19,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:26:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:26:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:19,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:19,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:19,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:19,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:19,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:26:19,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:19,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:19,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:19,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:26:19,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-14 23:26:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:19,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:19,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:20,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:20,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:20,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 23:26:20,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:20,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:20,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:20,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:20,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:20,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 23:26:20,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:20,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:20,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:20,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:20,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:20,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:26:20,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:20,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:20,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313725624] [2020-10-14 23:26:20,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:26:20,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-14 23:26:20,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685900135] [2020-10-14 23:26:20,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:26:20,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:20,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:26:20,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:20,718 INFO L87 Difference]: Start difference. First operand 290 states and 351 transitions. Second operand 19 states. [2020-10-14 23:26:23,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:23,920 INFO L93 Difference]: Finished difference Result 322 states and 387 transitions. [2020-10-14 23:26:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:26:23,928 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-10-14 23:26:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:23,931 INFO L225 Difference]: With dead ends: 322 [2020-10-14 23:26:23,931 INFO L226 Difference]: Without dead ends: 319 [2020-10-14 23:26:23,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=191, Invalid=1141, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:26:23,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-14 23:26:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 290. [2020-10-14 23:26:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 23:26:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-10-14 23:26:23,960 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 49 [2020-10-14 23:26:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:23,960 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-10-14 23:26:23,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:26:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-10-14 23:26:23,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:26:23,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:23,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:23,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:26:23,962 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:23,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:23,963 INFO L82 PathProgramCache]: Analyzing trace with hash -103719498, now seen corresponding path program 1 times [2020-10-14 23:26:23,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:23,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970193030] [2020-10-14 23:26:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:24,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:24,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:26:24,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-14 23:26:24,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:24,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:26:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:26:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:24,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:24,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:24,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:24,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:26:24,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:24,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:25,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:25,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:26:25,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 23:26:25,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:25,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:25,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:25,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:25,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:25,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 23:26:25,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:25,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:25,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:25,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:25,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:25,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:25,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 23:26:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:25,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:25,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:25,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:25,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:25,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:25,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:26:25,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:25,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:25,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:25,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970193030] [2020-10-14 23:26:25,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:26:25,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-14 23:26:25,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512179075] [2020-10-14 23:26:25,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:26:25,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:25,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:26:25,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:25,625 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 19 states. [2020-10-14 23:26:29,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:29,077 INFO L93 Difference]: Finished difference Result 325 states and 391 transitions. [2020-10-14 23:26:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:26:29,078 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:26:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:29,081 INFO L225 Difference]: With dead ends: 325 [2020-10-14 23:26:29,082 INFO L226 Difference]: Without dead ends: 322 [2020-10-14 23:26:29,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:26:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-14 23:26:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 290. [2020-10-14 23:26:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 23:26:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 349 transitions. [2020-10-14 23:26:29,112 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 349 transitions. Word has length 52 [2020-10-14 23:26:29,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:29,112 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 349 transitions. [2020-10-14 23:26:29,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:26:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 349 transitions. [2020-10-14 23:26:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 23:26:29,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:29,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:29,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:26:29,114 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:29,115 INFO L82 PathProgramCache]: Analyzing trace with hash 354184987, now seen corresponding path program 1 times [2020-10-14 23:26:29,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:29,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857834570] [2020-10-14 23:26:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 23:26:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2638 [2020-10-14 23:26:31,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:31,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:26:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:26:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:31,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:31,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:31,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:26:31,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:31,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:31,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:31,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:31,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:32,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:32,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:33,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:33,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:26:33,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:33,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-10-14 23:26:33,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:33,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:33,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:26:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:26:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:33,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:34,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:34,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:34,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 23:26:34,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:34,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:34,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:34,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:26:34,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:34,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:34,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:34,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:34,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:34,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:34,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:34,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:34,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:26:34,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:34,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:34,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:26:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:35,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:35,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:35,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 23:26:35,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:35,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:35,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:35,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:35,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:35,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 23:26:35,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:35,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:26:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:35,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:35,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:35,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:35,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:35,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:26:35,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:35,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:36,088 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 33 [2020-10-14 23:26:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:26:36,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857834570] [2020-10-14 23:26:36,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:36,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:26:36,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870092454] [2020-10-14 23:26:36,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:26:36,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:26:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:26:36,378 INFO L87 Difference]: Start difference. First operand 290 states and 349 transitions. Second operand 27 states. [2020-10-14 23:26:37,188 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 23:26:37,401 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-14 23:26:37,581 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-14 23:26:37,826 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-14 23:26:38,002 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-14 23:26:39,262 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 23:26:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:42,310 INFO L93 Difference]: Finished difference Result 415 states and 500 transitions. [2020-10-14 23:26:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 23:26:42,311 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-10-14 23:26:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:42,315 INFO L225 Difference]: With dead ends: 415 [2020-10-14 23:26:42,315 INFO L226 Difference]: Without dead ends: 412 [2020-10-14 23:26:42,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=364, Invalid=2288, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:26:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-10-14 23:26:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 383. [2020-10-14 23:26:42,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-14 23:26:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 463 transitions. [2020-10-14 23:26:42,350 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 463 transitions. Word has length 61 [2020-10-14 23:26:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:42,350 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 463 transitions. [2020-10-14 23:26:42,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:26:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 463 transitions. [2020-10-14 23:26:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:26:42,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:42,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:42,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:26:42,352 INFO L427 AbstractCegarLoop]: === Iteration 9 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:42,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2004966405, now seen corresponding path program 1 times [2020-10-14 23:26:42,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:42,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532307832] [2020-10-14 23:26:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:42,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:42,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:26:42,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:42,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-14 23:26:42,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:42,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:26:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:26:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:43,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:43,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:43,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:26:43,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:43,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:43,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:43,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:43,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:43,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:26:43,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 23:26:43,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:43,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:43,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:43,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:43,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:43,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:43,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:43,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 23:26:43,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:43,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:43,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:43,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:43,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 23:26:43,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:43,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:43,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:44,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:26:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:44,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:44,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532307832] [2020-10-14 23:26:44,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:26:44,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:26:44,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138098120] [2020-10-14 23:26:44,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:44,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:44,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:44,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:44,293 INFO L87 Difference]: Start difference. First operand 383 states and 463 transitions. Second operand 20 states. [2020-10-14 23:26:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:48,571 INFO L93 Difference]: Finished difference Result 403 states and 484 transitions. [2020-10-14 23:26:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:26:48,571 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-14 23:26:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:48,575 INFO L225 Difference]: With dead ends: 403 [2020-10-14 23:26:48,575 INFO L226 Difference]: Without dead ends: 400 [2020-10-14 23:26:48,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:26:48,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-14 23:26:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 383. [2020-10-14 23:26:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-14 23:26:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 462 transitions. [2020-10-14 23:26:48,623 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 462 transitions. Word has length 55 [2020-10-14 23:26:48,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:48,625 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 462 transitions. [2020-10-14 23:26:48,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 462 transitions. [2020-10-14 23:26:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:26:48,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:48,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:48,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:26:48,627 INFO L427 AbstractCegarLoop]: === Iteration 10 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:48,627 INFO L82 PathProgramCache]: Analyzing trace with hash -8497533, now seen corresponding path program 1 times [2020-10-14 23:26:48,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:48,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716920261] [2020-10-14 23:26:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:49,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:49,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:26:49,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-14 23:26:49,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:49,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:26:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 23:26:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:49,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:49,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:49,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:49,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:26:49,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:49,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:49,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:49,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:49,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:26:49,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 23:26:49,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:49,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:49,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:49,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:49,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 23:26:49,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:49,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:50,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:50,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:50,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:50,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:50,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:26:50,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:50,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:50,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:50,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:50,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:50,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:50,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:50,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:26:50,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:50,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:50,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716920261] [2020-10-14 23:26:50,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:26:50,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:26:50,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142821573] [2020-10-14 23:26:50,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:50,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:50,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:50,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:50,347 INFO L87 Difference]: Start difference. First operand 383 states and 462 transitions. Second operand 20 states. [2020-10-14 23:26:54,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:54,556 INFO L93 Difference]: Finished difference Result 402 states and 482 transitions. [2020-10-14 23:26:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:26:54,557 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-10-14 23:26:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:54,559 INFO L225 Difference]: With dead ends: 402 [2020-10-14 23:26:54,560 INFO L226 Difference]: Without dead ends: 399 [2020-10-14 23:26:54,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:26:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-14 23:26:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 383. [2020-10-14 23:26:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-14 23:26:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 461 transitions. [2020-10-14 23:26:54,593 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 461 transitions. Word has length 58 [2020-10-14 23:26:54,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:54,594 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 461 transitions. [2020-10-14 23:26:54,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 461 transitions. [2020-10-14 23:26:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 23:26:54,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:54,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:54,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:26:54,595 INFO L427 AbstractCegarLoop]: === Iteration 11 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:54,596 INFO L82 PathProgramCache]: Analyzing trace with hash 102928872, now seen corresponding path program 1 times [2020-10-14 23:26:54,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:54,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144410233] [2020-10-14 23:26:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:54,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:55,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:26:55,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-14 23:26:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:55,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:26:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:26:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:56,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:56,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:56,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:56,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:26:56,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:56,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:26:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:56,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:26:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:56,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:56,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:56,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:26:56,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 23:26:56,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:56,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:56,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:56,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:26:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 23:26:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:56,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:26:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:56,999 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-14 23:26:57,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:26:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:57,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:57,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:57,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 23:26:57,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:57,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:26:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:26:57,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:57,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:26:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:57,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:57,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:57,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:26:57,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:57,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:57,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:57,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144410233] [2020-10-14 23:26:57,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:26:57,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:26:57,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897544870] [2020-10-14 23:26:57,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:57,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:57,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:57,438 INFO L87 Difference]: Start difference. First operand 383 states and 461 transitions. Second operand 20 states. [2020-10-14 23:26:58,503 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-14 23:27:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:01,523 INFO L93 Difference]: Finished difference Result 401 states and 480 transitions. [2020-10-14 23:27:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:27:01,524 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2020-10-14 23:27:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:01,527 INFO L225 Difference]: With dead ends: 401 [2020-10-14 23:27:01,527 INFO L226 Difference]: Without dead ends: 398 [2020-10-14 23:27:01,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=218, Invalid=1422, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:27:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-14 23:27:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 383. [2020-10-14 23:27:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-14 23:27:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 460 transitions. [2020-10-14 23:27:01,560 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 460 transitions. Word has length 61 [2020-10-14 23:27:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:01,560 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 460 transitions. [2020-10-14 23:27:01,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:27:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 460 transitions. [2020-10-14 23:27:01,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:27:01,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:01,562 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:01,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:27:01,562 INFO L427 AbstractCegarLoop]: === Iteration 12 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:01,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:01,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1448055677, now seen corresponding path program 1 times [2020-10-14 23:27:01,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:01,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931360476] [2020-10-14 23:27:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:03,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:03,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:27:03,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:03,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-10-14 23:27:03,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:03,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:27:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:27:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 23:27:03,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:03,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:03,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:27:03,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:03,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:27:03,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:27:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:05,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:05,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:27:05,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-14 23:27:05,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:05,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:27:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:27:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:05,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:05,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:27:05,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 23:27:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:05,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:27:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:27:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:27:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 23:27:05,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:05,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:27:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:27:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:06,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:06,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:27:06,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:06,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:27:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:06,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:06,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:27:06,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:06,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 23:27:06,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:06,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:27:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:27:06,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:06,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:27:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:06,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:06,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:06,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 23:27:06,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:06,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:27:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:27:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:06,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:06,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:27:06,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:06,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:27:06,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931360476] [2020-10-14 23:27:06,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:06,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:27:06,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213374823] [2020-10-14 23:27:06,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:27:06,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:06,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:27:06,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:27:06,838 INFO L87 Difference]: Start difference. First operand 383 states and 460 transitions. Second operand 27 states. [2020-10-14 23:27:07,488 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-14 23:27:08,347 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-14 23:27:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:13,454 INFO L93 Difference]: Finished difference Result 437 states and 526 transitions. [2020-10-14 23:27:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:27:13,455 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2020-10-14 23:27:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:13,458 INFO L225 Difference]: With dead ends: 437 [2020-10-14 23:27:13,458 INFO L226 Difference]: Without dead ends: 434 [2020-10-14 23:27:13,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=468, Invalid=2838, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 23:27:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-14 23:27:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 391. [2020-10-14 23:27:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 23:27:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 472 transitions. [2020-10-14 23:27:13,495 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 472 transitions. Word has length 64 [2020-10-14 23:27:13,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:13,496 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 472 transitions. [2020-10-14 23:27:13,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:27:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 472 transitions. [2020-10-14 23:27:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 23:27:13,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:13,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:13,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:27:13,497 INFO L427 AbstractCegarLoop]: === Iteration 13 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:13,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:13,498 INFO L82 PathProgramCache]: Analyzing trace with hash -598121050, now seen corresponding path program 1 times [2020-10-14 23:27:13,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:13,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379912078] [2020-10-14 23:27:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:15,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:15,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 23:27:15,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1855 [2020-10-14 23:27:15,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:15,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:27:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:27:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:27:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:15,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:15,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:15,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:27:15,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:15,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:27:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:27:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:17,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:17,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:27:17,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-10-14 23:27:17,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:17,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:27:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:27:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:17,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:27:17,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:17,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 23:27:17,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:17,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:27:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:27:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:17,721 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-14 23:27:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:27:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:17,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 23:27:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:17,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:27:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:27:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:27:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:18,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:27:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:27:18,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 23:27:18,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:27:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:27:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:18,699 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-14 23:27:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:27:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:27:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:19,125 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 23:27:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:19,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:19,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:19,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:27:19,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:19,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:27:19,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379912078] [2020-10-14 23:27:19,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:19,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:27:19,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573097391] [2020-10-14 23:27:19,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:27:19,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:27:19,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:27:19,385 INFO L87 Difference]: Start difference. First operand 391 states and 472 transitions. Second operand 28 states. [2020-10-14 23:27:20,362 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-14 23:27:20,642 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 23:27:20,880 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 23:27:21,324 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-14 23:27:21,748 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-14 23:27:21,976 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-14 23:27:23,023 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-14 23:27:23,215 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-14 23:27:25,152 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-14 23:27:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:27,052 INFO L93 Difference]: Finished difference Result 429 states and 512 transitions. [2020-10-14 23:27:27,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:27:27,053 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 67 [2020-10-14 23:27:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:27,055 INFO L225 Difference]: With dead ends: 429 [2020-10-14 23:27:27,055 INFO L226 Difference]: Without dead ends: 426 [2020-10-14 23:27:27,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=348, Invalid=2408, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 23:27:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-14 23:27:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 391. [2020-10-14 23:27:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 23:27:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 471 transitions. [2020-10-14 23:27:27,088 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 471 transitions. Word has length 67 [2020-10-14 23:27:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:27,088 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 471 transitions. [2020-10-14 23:27:27,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:27:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 471 transitions. [2020-10-14 23:27:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:27:27,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:27,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:27,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:27:27,089 INFO L427 AbstractCegarLoop]: === Iteration 14 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:27,090 INFO L82 PathProgramCache]: Analyzing trace with hash 986517648, now seen corresponding path program 1 times [2020-10-14 23:27:27,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:27,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080464538] [2020-10-14 23:27:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:28,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:28,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:27:28,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:28,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-14 23:27:28,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:28,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:27:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:27:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:27:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:29,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:29,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:27:29,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:29,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:27:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:29,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:27:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:30,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:30,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:27:30,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-10-14 23:27:30,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:30,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:27:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:27:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:30,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:30,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:30,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:27:30,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:30,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 23:27:30,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:30,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:27:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:27:30,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:30,908 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-14 23:27:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:27:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:31,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:31,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:31,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:27:31,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:31,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:27:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:27:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:31,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:31,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:31,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:27:31,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:31,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:27:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:31,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:31,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:27:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 23:27:31,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:31,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:31,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:27:31,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:31,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:27:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:31,811 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-14 23:27:31,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:27:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:32,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:32,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:32,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 23:27:32,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:32,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:27:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:27:32,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:27:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:32,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:27:32,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080464538] [2020-10-14 23:27:32,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:32,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:27:32,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417360640] [2020-10-14 23:27:32,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:27:32,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:32,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:27:32,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:27:32,373 INFO L87 Difference]: Start difference. First operand 391 states and 471 transitions. Second operand 28 states. [2020-10-14 23:27:33,182 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 61 [2020-10-14 23:27:33,391 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2020-10-14 23:27:33,808 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 23:27:34,026 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 23:27:34,197 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 23:27:34,529 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-14 23:27:35,527 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 57 [2020-10-14 23:27:36,259 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-14 23:27:36,544 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-14 23:27:36,762 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-14 23:27:37,226 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-14 23:27:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:44,197 INFO L93 Difference]: Finished difference Result 471 states and 560 transitions. [2020-10-14 23:27:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 23:27:44,198 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 70 [2020-10-14 23:27:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:44,202 INFO L225 Difference]: With dead ends: 471 [2020-10-14 23:27:44,202 INFO L226 Difference]: Without dead ends: 468 [2020-10-14 23:27:44,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=386, Invalid=3274, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 23:27:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-14 23:27:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 423. [2020-10-14 23:27:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-14 23:27:44,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 508 transitions. [2020-10-14 23:27:44,248 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 508 transitions. Word has length 70 [2020-10-14 23:27:44,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:44,249 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 508 transitions. [2020-10-14 23:27:44,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:27:44,249 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 508 transitions. [2020-10-14 23:27:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:27:44,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:44,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:44,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:27:44,250 INFO L427 AbstractCegarLoop]: === Iteration 15 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:44,251 INFO L82 PathProgramCache]: Analyzing trace with hash -388383920, now seen corresponding path program 1 times [2020-10-14 23:27:44,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:44,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294234990] [2020-10-14 23:27:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:44,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:44,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:45,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:45,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:27:45,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:27:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1115 [2020-10-14 23:27:45,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:45,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:27:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:27:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:27:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:45,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:45,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:45,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:45,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:27:45,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:45,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:27:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:27:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:45,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:45,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:27:45,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 23:27:45,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:45,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:27:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:27:45,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:46,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:46,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:27:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 23:27:46,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:46,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:27:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:27:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:46,389 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-14 23:27:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:27:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:46,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:27:46,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:46,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:27:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:27:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:46,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:27:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:46,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:46,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294234990] [2020-10-14 23:27:46,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:27:46,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:27:46,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609391193] [2020-10-14 23:27:46,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:27:46,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:46,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:27:46,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:27:46,762 INFO L87 Difference]: Start difference. First operand 423 states and 508 transitions. Second operand 20 states. [2020-10-14 23:27:47,818 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-14 23:27:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:51,664 INFO L93 Difference]: Finished difference Result 443 states and 530 transitions. [2020-10-14 23:27:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:27:51,665 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2020-10-14 23:27:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:51,667 INFO L225 Difference]: With dead ends: 443 [2020-10-14 23:27:51,667 INFO L226 Difference]: Without dead ends: 440 [2020-10-14 23:27:51,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=241, Invalid=1481, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:27:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-14 23:27:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 423. [2020-10-14 23:27:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-14 23:27:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 507 transitions. [2020-10-14 23:27:51,712 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 507 transitions. Word has length 64 [2020-10-14 23:27:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:51,712 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 507 transitions. [2020-10-14 23:27:51,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:27:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 507 transitions. [2020-10-14 23:27:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:27:51,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:51,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:51,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:27:51,714 INFO L427 AbstractCegarLoop]: === Iteration 16 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:51,714 INFO L82 PathProgramCache]: Analyzing trace with hash 421300410, now seen corresponding path program 1 times [2020-10-14 23:27:51,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:51,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648977983] [2020-10-14 23:27:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:52,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 23:27:52,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:52,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:52,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:52,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:52,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:52,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:27:52,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:52,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:27:52,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:27:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:52,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:52,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:27:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 23:27:52,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:52,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:27:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:27:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:52,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:52,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:52,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:27:52,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 23:27:52,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:52,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:27:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:27:52,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:27:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:53,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:53,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:53,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:53,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 23:27:53,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:53,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:27:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:27:53,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:27:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:53,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:53,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:53,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:27:53,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:53,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:53,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:53,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648977983] [2020-10-14 23:27:53,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:27:53,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:27:53,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833359758] [2020-10-14 23:27:53,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:27:53,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:53,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:27:53,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:27:53,331 INFO L87 Difference]: Start difference. First operand 423 states and 507 transitions. Second operand 20 states. [2020-10-14 23:27:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:57,502 INFO L93 Difference]: Finished difference Result 441 states and 527 transitions. [2020-10-14 23:27:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:27:57,504 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-14 23:27:57,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:57,506 INFO L225 Difference]: With dead ends: 441 [2020-10-14 23:27:57,506 INFO L226 Difference]: Without dead ends: 438 [2020-10-14 23:27:57,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:27:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-14 23:27:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 422. [2020-10-14 23:27:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-14 23:27:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 502 transitions. [2020-10-14 23:27:57,555 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 502 transitions. Word has length 66 [2020-10-14 23:27:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:57,555 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 502 transitions. [2020-10-14 23:27:57,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:27:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 502 transitions. [2020-10-14 23:27:57,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 23:27:57,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:57,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:57,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:27:57,557 INFO L427 AbstractCegarLoop]: === Iteration 17 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:57,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1308230826, now seen corresponding path program 1 times [2020-10-14 23:27:57,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:57,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275366150] [2020-10-14 23:27:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:59,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:59,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 23:27:59,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:59,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-10-14 23:27:59,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:59,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:27:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:27:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 23:27:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:59,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:59,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:59,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:27:59,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:59,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:27:59,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:27:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:59,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:59,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:27:59,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:59,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-14 23:27:59,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:59,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:27:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:27:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:00,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:00,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:00,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:00,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:00,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 23:28:00,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:00,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:28:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:00,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:00,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:00,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:00,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:00,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:28:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:00,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:28:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:00,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:00,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:00,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:28:00,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:00,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:28:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:00,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:00,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:00,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:00,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:00,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 23:28:00,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:00,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:28:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:00,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:00,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:00,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:00,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:00,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:00,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:28:00,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:00,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:28:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:00,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:01,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:01,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:01,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:28:01,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:01,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:01,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:28:01,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275366150] [2020-10-14 23:28:01,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:01,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:28:01,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025360103] [2020-10-14 23:28:01,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:28:01,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:01,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:28:01,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:28:01,230 INFO L87 Difference]: Start difference. First operand 422 states and 502 transitions. Second operand 28 states. [2020-10-14 23:28:01,927 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-14 23:28:02,807 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-14 23:28:03,558 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-14 23:28:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:07,559 INFO L93 Difference]: Finished difference Result 454 states and 536 transitions. [2020-10-14 23:28:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 23:28:07,560 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 73 [2020-10-14 23:28:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:07,562 INFO L225 Difference]: With dead ends: 454 [2020-10-14 23:28:07,563 INFO L226 Difference]: Without dead ends: 451 [2020-10-14 23:28:07,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=465, Invalid=2841, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 23:28:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-14 23:28:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 422. [2020-10-14 23:28:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-14 23:28:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 501 transitions. [2020-10-14 23:28:07,613 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 501 transitions. Word has length 73 [2020-10-14 23:28:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:07,613 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 501 transitions. [2020-10-14 23:28:07,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:28:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 501 transitions. [2020-10-14 23:28:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 23:28:07,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:07,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:07,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:28:07,616 INFO L427 AbstractCegarLoop]: === Iteration 18 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:07,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:07,616 INFO L82 PathProgramCache]: Analyzing trace with hash 263136635, now seen corresponding path program 2 times [2020-10-14 23:28:07,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:07,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885617200] [2020-10-14 23:28:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 23:28:12,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4401 [2020-10-14 23:28:12,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:12,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 23:28:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 23:28:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:12,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:12,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:12,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:28:12,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:12,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:28:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:28:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:12,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:16,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:16,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:28:16,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4224 [2020-10-14 23:28:16,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:16,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:28:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 23:28:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:16,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:16,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:16,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:16,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 23:28:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:16,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:28:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:17,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:17,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:17,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:17,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:28:17,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:17,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:28:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:17,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:17,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:17,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:17,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:28:17,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:17,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:28:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:17,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:17,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:17,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:17,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 23:28:17,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:17,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:28:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:17,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:17,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:17,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:17,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:17,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 23:28:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:17,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:28:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:28:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:18,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 23:28:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:18,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 23:28:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:18,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:28:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:18,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:18,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:18,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:28:18,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:18,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:28:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:18,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:18,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:18,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:18,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:18,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:28:18,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:18,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:18,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 23:28:18,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885617200] [2020-10-14 23:28:18,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:18,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:28:18,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586070454] [2020-10-14 23:28:18,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:28:18,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:18,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:28:18,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:28:18,705 INFO L87 Difference]: Start difference. First operand 422 states and 501 transitions. Second operand 33 states. [2020-10-14 23:28:19,387 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-14 23:28:19,883 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-14 23:28:20,207 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-14 23:28:20,435 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-14 23:28:21,124 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-14 23:28:21,290 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-14 23:28:21,696 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2020-10-14 23:28:21,980 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-14 23:28:22,540 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-14 23:28:22,770 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-14 23:28:24,030 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2020-10-14 23:28:24,278 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-10-14 23:28:28,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:28,481 INFO L93 Difference]: Finished difference Result 463 states and 547 transitions. [2020-10-14 23:28:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 23:28:28,482 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 82 [2020-10-14 23:28:28,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:28,486 INFO L225 Difference]: With dead ends: 463 [2020-10-14 23:28:28,486 INFO L226 Difference]: Without dead ends: 460 [2020-10-14 23:28:28,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=577, Invalid=3583, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 23:28:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-14 23:28:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 426. [2020-10-14 23:28:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-14 23:28:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 508 transitions. [2020-10-14 23:28:28,571 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 508 transitions. Word has length 82 [2020-10-14 23:28:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:28,572 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 508 transitions. [2020-10-14 23:28:28,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:28:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 508 transitions. [2020-10-14 23:28:28,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 23:28:28,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:28,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:28,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:28:28,577 INFO L427 AbstractCegarLoop]: === Iteration 19 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:28,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:28,578 INFO L82 PathProgramCache]: Analyzing trace with hash 592750523, now seen corresponding path program 1 times [2020-10-14 23:28:28,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:28,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703196623] [2020-10-14 23:28:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:29,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:29,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 23:28:29,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-14 23:28:29,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:29,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:28:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:28:29,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:30,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:30,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:30,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:28:30,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:30,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:28:30,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:28:30,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:28:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:30,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:30,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:28:30,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 23:28:30,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:30,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:28:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:28:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:30,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:30,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:30,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 23:28:30,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:30,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:28:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:31,209 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-14 23:28:31,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:31,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:31,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 23:28:31,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:28:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:31,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:31,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:31,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:28:31,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:31,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:31,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:31,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:28:31,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703196623] [2020-10-14 23:28:31,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:28:31,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:28:31,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224866217] [2020-10-14 23:28:31,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:28:31,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:31,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:28:31,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:28:31,909 INFO L87 Difference]: Start difference. First operand 426 states and 508 transitions. Second operand 20 states. [2020-10-14 23:28:33,039 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-14 23:28:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:36,537 INFO L93 Difference]: Finished difference Result 445 states and 529 transitions. [2020-10-14 23:28:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:28:36,538 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2020-10-14 23:28:36,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:36,541 INFO L225 Difference]: With dead ends: 445 [2020-10-14 23:28:36,542 INFO L226 Difference]: Without dead ends: 442 [2020-10-14 23:28:36,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=234, Invalid=1406, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:28:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-14 23:28:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 426. [2020-10-14 23:28:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-14 23:28:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 507 transitions. [2020-10-14 23:28:36,593 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 507 transitions. Word has length 73 [2020-10-14 23:28:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:36,593 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 507 transitions. [2020-10-14 23:28:36,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:28:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 507 transitions. [2020-10-14 23:28:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:28:36,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:36,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:36,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:28:36,595 INFO L427 AbstractCegarLoop]: === Iteration 20 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1150180773, now seen corresponding path program 1 times [2020-10-14 23:28:36,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:36,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019215256] [2020-10-14 23:28:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:38,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 23:28:38,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1484 [2020-10-14 23:28:38,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:38,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:28:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 23:28:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:38,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:38,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:28:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:38,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:28:38,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:38,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:28:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:28:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-14 23:28:39,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:28:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:28:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,811 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-14 23:28:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:39,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 23:28:39,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:28:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:40,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:40,342 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-14 23:28:40,508 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-14 23:28:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:28:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:40,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:28:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:40,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:40,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:40,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:40,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:28:40,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:40,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:28:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:41,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:41,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:41,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:41,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 23:28:41,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:41,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:28:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:41,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:41,727 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-14 23:28:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:41,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:41,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 23:28:41,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:41,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:28:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:42,422 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-14 23:28:42,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:42,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:42,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:42,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:28:42,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:42,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:42,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:42,783 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-14 23:28:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:28:42,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019215256] [2020-10-14 23:28:42,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:42,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:28:42,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883168339] [2020-10-14 23:28:42,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:28:42,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:42,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:28:42,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:28:42,856 INFO L87 Difference]: Start difference. First operand 426 states and 507 transitions. Second operand 29 states. [2020-10-14 23:28:43,596 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-14 23:28:44,067 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 23:28:44,469 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 23:28:44,799 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 23:28:45,349 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-10-14 23:28:46,025 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 118 [2020-10-14 23:28:46,383 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-14 23:28:47,495 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-14 23:28:47,896 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 23:28:48,209 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-14 23:28:49,023 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-14 23:28:53,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:53,826 INFO L93 Difference]: Finished difference Result 456 states and 539 transitions. [2020-10-14 23:28:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:28:53,828 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 76 [2020-10-14 23:28:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:53,831 INFO L225 Difference]: With dead ends: 456 [2020-10-14 23:28:53,831 INFO L226 Difference]: Without dead ends: 453 [2020-10-14 23:28:53,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=396, Invalid=2684, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 23:28:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-14 23:28:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 426. [2020-10-14 23:28:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-14 23:28:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 506 transitions. [2020-10-14 23:28:53,883 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 506 transitions. Word has length 76 [2020-10-14 23:28:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:53,884 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 506 transitions. [2020-10-14 23:28:53,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:28:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 506 transitions. [2020-10-14 23:28:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:28:53,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:53,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:53,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:28:53,886 INFO L427 AbstractCegarLoop]: === Iteration 21 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:53,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1953531995, now seen corresponding path program 1 times [2020-10-14 23:28:53,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:53,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629194836] [2020-10-14 23:28:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:54,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:54,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:28:54,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 23:28:54,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:54,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:28:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:28:54,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:54,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:54,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:54,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:28:54,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:54,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:28:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:28:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:54,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:54,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:54,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:28:54,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 23:28:54,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:54,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:28:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:28:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:55,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:55,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:28:55,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:55,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 23:28:55,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:55,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:28:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:28:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:55,485 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-14 23:28:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:28:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:55,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:55,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:55,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:55,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 23:28:55,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:55,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:28:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:28:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:55,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:28:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:55,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:55,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:55,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:55,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:28:55,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:55,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:55,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:28:55,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629194836] [2020-10-14 23:28:55,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:28:55,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:28:55,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477331939] [2020-10-14 23:28:55,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:28:55,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:55,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:28:55,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:28:55,960 INFO L87 Difference]: Start difference. First operand 426 states and 506 transitions. Second operand 20 states. [2020-10-14 23:28:57,080 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-14 23:28:58,801 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-14 23:28:59,592 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-14 23:29:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:01,723 INFO L93 Difference]: Finished difference Result 444 states and 526 transitions. [2020-10-14 23:29:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:29:01,724 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2020-10-14 23:29:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:01,727 INFO L225 Difference]: With dead ends: 444 [2020-10-14 23:29:01,727 INFO L226 Difference]: Without dead ends: 441 [2020-10-14 23:29:01,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=240, Invalid=1482, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:29:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-14 23:29:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 426. [2020-10-14 23:29:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-14 23:29:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 505 transitions. [2020-10-14 23:29:01,780 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 505 transitions. Word has length 76 [2020-10-14 23:29:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:01,781 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 505 transitions. [2020-10-14 23:29:01,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:29:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 505 transitions. [2020-10-14 23:29:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 23:29:01,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:01,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:01,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:29:01,782 INFO L427 AbstractCegarLoop]: === Iteration 22 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:01,783 INFO L82 PathProgramCache]: Analyzing trace with hash 49167395, now seen corresponding path program 1 times [2020-10-14 23:29:01,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:01,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010842953] [2020-10-14 23:29:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:01,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:04,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:04,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 23:29:04,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2556 [2020-10-14 23:29:04,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:04,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:29:04,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 23:29:04,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:04,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:04,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:04,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:04,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:04,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:04,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:29:04,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:04,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:29:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:04,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:29:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:04,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:05,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:29:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-10-14 23:29:05,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:05,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:29:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:29:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:29:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:06,073 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-14 23:29:06,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:29:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:06,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:06,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:29:06,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 23:29:06,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:06,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:29:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:29:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:29:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:06,710 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-14 23:29:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:29:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:06,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:06,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:06,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:29:06,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:29:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:06,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:29:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:29:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:29:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:29:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:29:07,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:07,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:29:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:29:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:07,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:29:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 23:29:07,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:07,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:29:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:29:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:29:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:08,008 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-14 23:29:08,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 23:29:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:08,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:08,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:29:08,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 23:29:08,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:08,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:29:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:29:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:29:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:08,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:29:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:08,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:08,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:08,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:29:08,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:08,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:29:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:29:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:29:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:29:08,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010842953] [2020-10-14 23:29:08,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:08,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:29:08,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364096364] [2020-10-14 23:29:08,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:29:08,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:08,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:29:08,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:29:08,738 INFO L87 Difference]: Start difference. First operand 426 states and 505 transitions. Second operand 29 states. [2020-10-14 23:29:09,451 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 23:29:09,663 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-14 23:29:10,059 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-14 23:29:10,359 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 23:29:10,586 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 23:29:11,073 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-14 23:29:11,615 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-10-14 23:29:11,926 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-14 23:29:12,371 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-10-14 23:29:12,579 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 50 [2020-10-14 23:29:12,825 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2020-10-14 23:29:13,307 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 109 [2020-10-14 23:29:13,719 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2020-10-14 23:29:14,254 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-14 23:29:14,611 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 23:29:14,885 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-14 23:29:15,124 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-14 23:29:15,768 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2020-10-14 23:29:15,975 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 23:29:16,540 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-14 23:29:16,869 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 95 [2020-10-14 23:29:17,444 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 23:29:17,667 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-14 23:29:18,817 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2020-10-14 23:29:23,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:23,417 INFO L93 Difference]: Finished difference Result 466 states and 548 transitions. [2020-10-14 23:29:23,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 23:29:23,420 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 79 [2020-10-14 23:29:23,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:23,423 INFO L225 Difference]: With dead ends: 466 [2020-10-14 23:29:23,424 INFO L226 Difference]: Without dead ends: 463 [2020-10-14 23:29:23,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=668, Invalid=4162, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 23:29:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-14 23:29:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 426. [2020-10-14 23:29:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-14 23:29:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 504 transitions. [2020-10-14 23:29:23,479 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 504 transitions. Word has length 79 [2020-10-14 23:29:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:23,480 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 504 transitions. [2020-10-14 23:29:23,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:29:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 504 transitions. [2020-10-14 23:29:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 23:29:23,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:23,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 23:29:23,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:29:23,481 INFO L427 AbstractCegarLoop]: === Iteration 23 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:23,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1511926778, now seen corresponding path program 2 times [2020-10-14 23:29:23,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:23,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226691059] [2020-10-14 23:29:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:28,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4848 [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 23:29:28,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:28,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:28,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:28,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:28,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:28,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:29:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:29:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:32,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3582 [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 23:29:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:32,758 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-14 23:29:32,920 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-14 23:29:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:29:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:33,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:33,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:29:33,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 23:29:33,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:33,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:29:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:29:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:29:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:33,567 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61