/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/heap-data/process_queue.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:14:38,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:14:38,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:14:38,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:14:38,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:14:38,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:14:38,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:14:38,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:14:38,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:14:38,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:14:38,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:14:38,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:14:38,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:14:39,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:14:39,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:14:39,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:14:39,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:14:39,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:14:39,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:14:39,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:14:39,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:14:39,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:14:39,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:14:39,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:14:39,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:14:39,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:14:39,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:14:39,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:14:39,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:14:39,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:14:39,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:14:39,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:14:39,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:14:39,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:14:39,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:14:39,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:14:39,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:14:39,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:14:39,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:14:39,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:14:39,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:14:39,063 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 [2020-10-29 09:14:39,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:14:39,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:14:39,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:14:39,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:14:39,113 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:14:39,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:14:39,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:14:39,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:14:39,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:14:39,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:14:39,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:14:39,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:14:39,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:14:39,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:14:39,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:14:39,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:14:39,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:14:39,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:14:39,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:14:39,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:14:39,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:14:39,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:14:39,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:14:39,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:14:39,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:14:39,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:14:39,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:14:39,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:14:39,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:14:39,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:14:39,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:14:39,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:14:39,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:14:39,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:14:39,625 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:14:39,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/process_queue.i [2020-10-29 09:14:39,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9f7539dd/898476d305f24ec7a136a1790f0c188b/FLAG30791ddd1 [2020-10-29 09:14:40,495 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:14:40,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/process_queue.i [2020-10-29 09:14:40,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9f7539dd/898476d305f24ec7a136a1790f0c188b/FLAG30791ddd1 [2020-10-29 09:14:40,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9f7539dd/898476d305f24ec7a136a1790f0c188b [2020-10-29 09:14:40,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:14:40,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:14:40,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:14:40,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:14:40,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:14:40,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:14:40" (1/1) ... [2020-10-29 09:14:40,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@deab95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:40, skipping insertion in model container [2020-10-29 09:14:40,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:14:40" (1/1) ... [2020-10-29 09:14:40,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:14:40,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:14:41,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:14:41,305 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:14:41,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:14:41,445 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:14:41,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41 WrapperNode [2020-10-29 09:14:41,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:14:41,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:14:41,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:14:41,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:14:41,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (1/1) ... [2020-10-29 09:14:41,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (1/1) ... [2020-10-29 09:14:41,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (1/1) ... [2020-10-29 09:14:41,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (1/1) ... [2020-10-29 09:14:41,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (1/1) ... [2020-10-29 09:14:41,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (1/1) ... [2020-10-29 09:14:41,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (1/1) ... [2020-10-29 09:14:41,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:14:41,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:14:41,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:14:41,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:14:41,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (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 [2020-10-29 09:14:41,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:14:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:14:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:14:41,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:14:41,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:14:41,608 INFO L138 BoogieDeclarations]: Found implementation of procedure run_process [2020-10-29 09:14:41,608 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2020-10-29 09:14:41,608 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_next [2020-10-29 09:14:41,608 INFO L138 BoogieDeclarations]: Found implementation of procedure check_queue [2020-10-29 09:14:41,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:14:41,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:14:41,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:14:41,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:14:41,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:14:41,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:14:41,612 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:14:41,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:14:41,612 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:14:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:14:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:14:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:14:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:14:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:14:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:14:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:14:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:14:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:14:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:14:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:14:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:14:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:14:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:14:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:14:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:14:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:14:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:14:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:14:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:14:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:14:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:14:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:14:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:14:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:14:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:14:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:14:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:14:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:14:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:14:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:14:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:14:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:14:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:14:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:14:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:14:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:14:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:14:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:14:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:14:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:14:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:14:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:14:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:14:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:14:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:14:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:14:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:14:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:14:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:14:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:14:41,625 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:14:41,625 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:14:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:14:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:14:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:14:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:14:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:14:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:14:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:14:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:14:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:14:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:14:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:14:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:14:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:14:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:14:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:14:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:14:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:14:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:14:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:14:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:14:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:14:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:14:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:14:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:14:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:14:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:14:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:14:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:14:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:14:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:14:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:14:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:14:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:14:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:14:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:14:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:14:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:14:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:14:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:14:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:14:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:14:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:14:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:14:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:14:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:14:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:14:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:14:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:14:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:14:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:14:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure run_process [2020-10-29 09:14:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2020-10-29 09:14:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:14:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:14:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure choose_next [2020-10-29 09:14:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:14:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:14:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure check_queue [2020-10-29 09:14:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:14:41,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:14:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:14:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:14:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:14:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:14:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:14:42,714 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:14:42,714 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 09:14:42,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:14:42 BoogieIcfgContainer [2020-10-29 09:14:42,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:14:42,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:14:42,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:14:42,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:14:42,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:14:40" (1/3) ... [2020-10-29 09:14:42,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fe8a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:14:42, skipping insertion in model container [2020-10-29 09:14:42,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:14:41" (2/3) ... [2020-10-29 09:14:42,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fe8a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:14:42, skipping insertion in model container [2020-10-29 09:14:42,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:14:42" (3/3) ... [2020-10-29 09:14:42,727 INFO L111 eAbstractionObserver]: Analyzing ICFG process_queue.i [2020-10-29 09:14:42,742 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:14:42,749 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:14:42,765 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:14:42,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:14:42,795 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:14:42,795 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:14:42,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:14:42,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:14:42,796 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:14:42,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:14:42,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:14:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-29 09:14:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:14:42,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:42,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:42,827 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:42,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1921262304, now seen corresponding path program 1 times [2020-10-29 09:14:42,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:42,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796378548] [2020-10-29 09:14:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:43,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:43,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:14:43,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-29 09:14:43,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:43,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:14:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:14:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:14:43,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:43,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:43,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:43,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:14:43,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:43,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:43,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:43,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796378548] [2020-10-29 09:14:43,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:43,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:14:43,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836090476] [2020-10-29 09:14:43,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:14:43,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:43,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:14:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:14:43,727 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 7 states. [2020-10-29 09:14:44,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:44,199 INFO L93 Difference]: Finished difference Result 106 states and 143 transitions. [2020-10-29 09:14:44,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:44,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-29 09:14:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:44,212 INFO L225 Difference]: With dead ends: 106 [2020-10-29 09:14:44,213 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 09:14:44,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:44,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 09:14:44,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 09:14:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:14:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-29 09:14:44,274 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 19 [2020-10-29 09:14:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:44,275 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-29 09:14:44,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:14:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-29 09:14:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:14:44,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:44,277 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] [2020-10-29 09:14:44,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:14:44,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:44,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:44,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1963549366, now seen corresponding path program 1 times [2020-10-29 09:14:44,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:44,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746869633] [2020-10-29 09:14:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:44,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:44,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:44,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:14:44,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-29 09:14:44,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:44,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:14:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:45,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:45,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:45,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:14:45,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:45,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:14:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:45,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:45,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:45,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:45,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:45,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:14:45,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:45,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:14:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:14:45,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:45,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746869633] [2020-10-29 09:14:45,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:45,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 09:14:45,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147094217] [2020-10-29 09:14:45,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:45,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:45,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:45,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:45,202 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 12 states. [2020-10-29 09:14:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:46,405 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2020-10-29 09:14:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:46,406 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-10-29 09:14:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:46,409 INFO L225 Difference]: With dead ends: 123 [2020-10-29 09:14:46,409 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 09:14:46,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:14:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 09:14:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2020-10-29 09:14:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 09:14:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-10-29 09:14:46,434 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 22 [2020-10-29 09:14:46,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:46,435 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-10-29 09:14:46,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-10-29 09:14:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:14:46,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:46,437 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:46,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:14:46,438 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:46,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:46,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1598909245, now seen corresponding path program 1 times [2020-10-29 09:14:46,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:46,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105929739] [2020-10-29 09:14:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:46,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:46,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:14:46,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-29 09:14:46,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:46,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:46,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:46,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:46,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:14:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:47,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:47,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:47,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:47,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:47,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:47,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:47,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:47,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:14:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:47,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:47,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:47,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 09:14:47,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:47,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:14:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:14:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:47,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105929739] [2020-10-29 09:14:47,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:47,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:47,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5433706] [2020-10-29 09:14:47,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:47,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:47,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:47,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:47,289 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 12 states. [2020-10-29 09:14:48,124 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-29 09:14:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:48,711 INFO L93 Difference]: Finished difference Result 144 states and 183 transitions. [2020-10-29 09:14:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:14:48,713 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-29 09:14:48,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:48,715 INFO L225 Difference]: With dead ends: 144 [2020-10-29 09:14:48,715 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 09:14:48,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:14:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 09:14:48,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-10-29 09:14:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 09:14:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-29 09:14:48,742 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 25 [2020-10-29 09:14:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:48,742 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-29 09:14:48,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-29 09:14:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:14:48,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:48,749 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:48,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:14:48,749 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:48,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1960062015, now seen corresponding path program 1 times [2020-10-29 09:14:48,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:48,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265434388] [2020-10-29 09:14:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:51,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:51,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:14:51,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2793 [2020-10-29 09:14:51,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:51,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:14:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:14:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:51,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:51,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:51,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:14:51,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:51,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:14:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:51,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:51,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:51,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:14:51,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:51,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:14:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:14:51,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:14:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:51,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:51,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:51,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:14:51,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:51,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:14:51,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:51,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:51,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:14:51,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:51,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:14:51,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 09:14:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:51,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:51,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:51,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:51,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 09:14:51,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:51,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:14:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:14:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:14:52,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265434388] [2020-10-29 09:14:52,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:52,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:14:52,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351980580] [2020-10-29 09:14:52,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:14:52,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:52,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:14:52,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:52,027 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 13 states. [2020-10-29 09:14:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:53,398 INFO L93 Difference]: Finished difference Result 191 states and 251 transitions. [2020-10-29 09:14:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:14:53,399 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-29 09:14:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:53,402 INFO L225 Difference]: With dead ends: 191 [2020-10-29 09:14:53,402 INFO L226 Difference]: Without dead ends: 131 [2020-10-29 09:14:53,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:14:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-29 09:14:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 124. [2020-10-29 09:14:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-29 09:14:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 161 transitions. [2020-10-29 09:14:53,452 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 161 transitions. Word has length 37 [2020-10-29 09:14:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:53,452 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 161 transitions. [2020-10-29 09:14:53,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:14:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 161 transitions. [2020-10-29 09:14:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:14:53,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:53,458 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:53,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:14:53,459 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:53,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1883599514, now seen corresponding path program 1 times [2020-10-29 09:14:53,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:53,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050221301] [2020-10-29 09:14:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:58,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:58,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:14:58,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 09:14:58,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:58,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:14:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:14:58,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:58,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:58,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:58,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:58,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:58,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:58,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:58,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:58,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:58,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:58,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:58,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:14:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:58,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:58,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:58,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:14:58,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:58,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:14:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:14:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:14:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:58,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:58,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:58,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:14:58,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:14:58,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:58,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:14:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:14:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 09:14:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:58,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:58,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:58,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:14:58,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:58,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:14:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:14:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:14:58,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050221301] [2020-10-29 09:14:58,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:58,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:14:58,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52950945] [2020-10-29 09:14:58,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:14:58,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:58,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:14:58,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:58,955 INFO L87 Difference]: Start difference. First operand 124 states and 161 transitions. Second operand 16 states. [2020-10-29 09:14:59,946 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-29 09:15:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:01,250 INFO L93 Difference]: Finished difference Result 398 states and 561 transitions. [2020-10-29 09:15:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:15:01,256 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-29 09:15:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:01,260 INFO L225 Difference]: With dead ends: 398 [2020-10-29 09:15:01,260 INFO L226 Difference]: Without dead ends: 301 [2020-10-29 09:15:01,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:15:01,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-29 09:15:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 241. [2020-10-29 09:15:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 09:15:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 331 transitions. [2020-10-29 09:15:01,334 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 331 transitions. Word has length 40 [2020-10-29 09:15:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:01,337 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 331 transitions. [2020-10-29 09:15:01,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:15:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 331 transitions. [2020-10-29 09:15:01,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:15:01,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:01,339 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:15:01,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:15:01,340 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:01,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:01,340 INFO L82 PathProgramCache]: Analyzing trace with hash -476912487, now seen corresponding path program 2 times [2020-10-29 09:15:01,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:01,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034261512] [2020-10-29 09:15:01,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:04,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:04,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:15:04,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2773 [2020-10-29 09:15:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:04,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:15:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:15:04,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:04,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:04,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:04,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:04,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:04,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:04,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:04,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:04,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:04,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:04,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:04,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:15:04,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:04,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:04,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:15:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:04,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:04,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:04,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:15:04,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:15:04,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:04,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:15:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:15:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:04,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:04,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:04,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:04,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:04,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:15:04,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:04,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:15:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:15:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:15:04,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034261512] [2020-10-29 09:15:04,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:04,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:15:04,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669117194] [2020-10-29 09:15:04,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:15:04,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:04,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:15:04,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:15:04,812 INFO L87 Difference]: Start difference. First operand 241 states and 331 transitions. Second operand 16 states. [2020-10-29 09:15:05,203 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-29 09:15:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:06,874 INFO L93 Difference]: Finished difference Result 502 states and 711 transitions. [2020-10-29 09:15:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:15:06,875 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-29 09:15:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:06,881 INFO L225 Difference]: With dead ends: 502 [2020-10-29 09:15:06,881 INFO L226 Difference]: Without dead ends: 498 [2020-10-29 09:15:06,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:15:06,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-29 09:15:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 425. [2020-10-29 09:15:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-29 09:15:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 600 transitions. [2020-10-29 09:15:06,960 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 600 transitions. Word has length 43 [2020-10-29 09:15:06,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:06,961 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 600 transitions. [2020-10-29 09:15:06,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:15:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 600 transitions. [2020-10-29 09:15:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:15:06,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:06,966 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-10-29 09:15:06,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:15:06,966 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:06,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:06,969 INFO L82 PathProgramCache]: Analyzing trace with hash 295415182, now seen corresponding path program 3 times [2020-10-29 09:15:06,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:06,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865038637] [2020-10-29 09:15:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:07,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:07,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:09,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:15:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2856 [2020-10-29 09:15:09,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:09,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:15:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:15:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:10,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:10,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:10,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:10,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:15:10,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:10,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:10,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:10,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:10,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:10,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 09:15:10,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:10,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:15:10,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:10,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:10,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:15:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:15:10,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:10,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:15:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:15:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:10,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:10,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:10,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:10,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:15:10,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:10,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:10,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:10,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:10,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:15:10,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:10,802 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-29 09:15:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:15:10,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865038637] [2020-10-29 09:15:10,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:10,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:15:10,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66614762] [2020-10-29 09:15:10,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:15:10,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:10,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:15:10,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:15:10,831 INFO L87 Difference]: Start difference. First operand 425 states and 600 transitions. Second operand 16 states. [2020-10-29 09:15:11,585 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-29 09:15:12,985 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-29 09:15:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:13,564 INFO L93 Difference]: Finished difference Result 806 states and 1143 transitions. [2020-10-29 09:15:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:15:13,564 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-29 09:15:13,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:13,578 INFO L225 Difference]: With dead ends: 806 [2020-10-29 09:15:13,578 INFO L226 Difference]: Without dead ends: 493 [2020-10-29 09:15:13,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:15:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-29 09:15:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 423. [2020-10-29 09:15:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-29 09:15:13,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 594 transitions. [2020-10-29 09:15:13,644 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 594 transitions. Word has length 46 [2020-10-29 09:15:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:13,644 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 594 transitions. [2020-10-29 09:15:13,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:15:13,644 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 594 transitions. [2020-10-29 09:15:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:15:13,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:13,646 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:13,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:15:13,646 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:13,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:13,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1988532190, now seen corresponding path program 1 times [2020-10-29 09:15:13,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:13,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034750611] [2020-10-29 09:15:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:13,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:14,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:15,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:15,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:15:15,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:15:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2254 [2020-10-29 09:15:15,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:15,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:15:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:15:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:16,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:16,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:16,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:16,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:16,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:16,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:16,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:16,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:16,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:15:16,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:16,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:15:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:16,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:16,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:15:16,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:16,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:15:16,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:16,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:15:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:15:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:16,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:15:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:16,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:16,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:15:16,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 09:15:16,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:16,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:15:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:15:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:16,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:16,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:16,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:16,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:16,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:15:16,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:16,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034750611] [2020-10-29 09:15:16,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:16,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:15:16,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979592686] [2020-10-29 09:15:16,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:15:16,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:16,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:15:16,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:15:16,250 INFO L87 Difference]: Start difference. First operand 423 states and 594 transitions. Second operand 14 states. [2020-10-29 09:15:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:17,478 INFO L93 Difference]: Finished difference Result 653 states and 915 transitions. [2020-10-29 09:15:17,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:15:17,481 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-29 09:15:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:17,486 INFO L225 Difference]: With dead ends: 653 [2020-10-29 09:15:17,487 INFO L226 Difference]: Without dead ends: 430 [2020-10-29 09:15:17,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:15:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-29 09:15:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 423. [2020-10-29 09:15:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-29 09:15:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 587 transitions. [2020-10-29 09:15:17,562 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 587 transitions. Word has length 49 [2020-10-29 09:15:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:17,562 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 587 transitions. [2020-10-29 09:15:17,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:15:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 587 transitions. [2020-10-29 09:15:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:15:17,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:17,565 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:17,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:15:17,565 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:17,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1464567217, now seen corresponding path program 1 times [2020-10-29 09:15:17,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:17,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908885998] [2020-10-29 09:15:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:18,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:15:18,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-10-29 09:15:18,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:18,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:15:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:15:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:18,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:18,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:18,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:18,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:18,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:18,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:18,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:19,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:19,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:19,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:19,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:15:19,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:19,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:15:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:15:19,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:19,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:19,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:15:19,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:15:19,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:19,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:15:19,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:19,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:15:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:19,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:19,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:19,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:15:19,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 09:15:19,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:19,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:15:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:15:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:19,500 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-29 09:15:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 09:15:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:19,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:19,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:19,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:15:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:19,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908885998] [2020-10-29 09:15:19,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:19,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:15:19,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793384044] [2020-10-29 09:15:19,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:15:19,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:19,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:15:19,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:15:19,583 INFO L87 Difference]: Start difference. First operand 423 states and 587 transitions. Second operand 21 states. [2020-10-29 09:15:20,825 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-29 09:15:21,049 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-29 09:15:21,869 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-29 09:15:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:22,325 INFO L93 Difference]: Finished difference Result 662 states and 914 transitions. [2020-10-29 09:15:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:15:22,326 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-10-29 09:15:22,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:22,332 INFO L225 Difference]: With dead ends: 662 [2020-10-29 09:15:22,332 INFO L226 Difference]: Without dead ends: 658 [2020-10-29 09:15:22,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=232, Invalid=1490, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:15:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-29 09:15:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 537. [2020-10-29 09:15:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-29 09:15:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 736 transitions. [2020-10-29 09:15:22,410 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 736 transitions. Word has length 52 [2020-10-29 09:15:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:22,411 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 736 transitions. [2020-10-29 09:15:22,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:15:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 736 transitions. [2020-10-29 09:15:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:15:22,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:22,413 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:22,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:15:22,413 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:22,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1610048827, now seen corresponding path program 1 times [2020-10-29 09:15:22,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:22,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519293013] [2020-10-29 09:15:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:22,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:22,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:27,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:27,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 09:15:27,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 09:15:27,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:27,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:15:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 09:15:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:15:27,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:27,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:27,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:27,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:27,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:27,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:27,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:27,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:27,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:27,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:27,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:27,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:27,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:15:27,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:15:27,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:27,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:15:27,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:15:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:27,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:27,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 09:15:27,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:15:27,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:27,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:15:27,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:27,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:15:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:27,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:27,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:27,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:27,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:15:27,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:27,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519293013] [2020-10-29 09:15:27,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:27,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:15:27,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781876988] [2020-10-29 09:15:27,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:15:27,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:15:27,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:15:27,976 INFO L87 Difference]: Start difference. First operand 537 states and 736 transitions. Second operand 17 states. [2020-10-29 09:15:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:30,485 INFO L93 Difference]: Finished difference Result 1074 states and 1523 transitions. [2020-10-29 09:15:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 09:15:30,485 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-29 09:15:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:30,490 INFO L225 Difference]: With dead ends: 1074 [2020-10-29 09:15:30,490 INFO L226 Difference]: Without dead ends: 636 [2020-10-29 09:15:30,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 09:15:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-29 09:15:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 416. [2020-10-29 09:15:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-29 09:15:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 576 transitions. [2020-10-29 09:15:30,554 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 576 transitions. Word has length 53 [2020-10-29 09:15:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:30,554 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 576 transitions. [2020-10-29 09:15:30,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:15:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 576 transitions. [2020-10-29 09:15:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 09:15:30,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:30,556 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:30,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:15:30,556 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash 792400377, now seen corresponding path program 1 times [2020-10-29 09:15:30,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:30,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615982793] [2020-10-29 09:15:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:30,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:30,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 09:15:30,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:30,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 09:15:30,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:30,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 09:15:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:15:30,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:30,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:30,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:30,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:30,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:15:30,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:30,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:30,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:30,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:30,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:30,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:30,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:30,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:30,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:30,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:30,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:15:30,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:30,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:30,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:30,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:30,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:15:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:30,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 09:15:30,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:15:30,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:30,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:15:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:15:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:30,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:15:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:30,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:30,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:30,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:30,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:15:30,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:30,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:15:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:15:30,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615982793] [2020-10-29 09:15:30,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:15:30,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:15:30,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276905769] [2020-10-29 09:15:30,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:15:30,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:30,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:15:30,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:15:30,773 INFO L87 Difference]: Start difference. First operand 416 states and 576 transitions. Second operand 5 states. [2020-10-29 09:15:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:31,076 INFO L93 Difference]: Finished difference Result 735 states and 1040 transitions. [2020-10-29 09:15:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:15:31,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-29 09:15:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:31,080 INFO L225 Difference]: With dead ends: 735 [2020-10-29 09:15:31,080 INFO L226 Difference]: Without dead ends: 417 [2020-10-29 09:15:31,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:15:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-10-29 09:15:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2020-10-29 09:15:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-29 09:15:31,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 577 transitions. [2020-10-29 09:15:31,126 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 577 transitions. Word has length 53 [2020-10-29 09:15:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:31,127 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 577 transitions. [2020-10-29 09:15:31,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:15:31,128 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 577 transitions. [2020-10-29 09:15:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:15:31,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:31,129 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:15:31,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:15:31,130 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1894298648, now seen corresponding path program 2 times [2020-10-29 09:15:31,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:31,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219708568] [2020-10-29 09:15:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:34,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:15:34,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:15:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2893 [2020-10-29 09:15:34,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:34,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:15:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:15:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:34,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:34,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:34,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:34,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:34,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:34,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:34,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:34,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:34,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:34,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:15:34,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:34,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:15:34,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:34,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:34,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:15:34,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:15:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:34,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:34,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:15:34,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:15:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:34,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:34,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:15:34,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:15:34,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:34,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:15:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:15:34,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:34,523 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-29 09:15:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 09:15:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:34,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:34,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:34,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:34,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:34,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:34,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:34,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:34,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:34,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:15:34,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:15:34,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219708568] [2020-10-29 09:15:34,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:34,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:15:34,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373449455] [2020-10-29 09:15:34,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:15:34,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:34,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:15:34,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:15:34,591 INFO L87 Difference]: Start difference. First operand 417 states and 577 transitions. Second operand 15 states. [2020-10-29 09:15:36,432 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-10-29 09:15:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:36,561 INFO L93 Difference]: Finished difference Result 794 states and 1111 transitions. [2020-10-29 09:15:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:15:36,562 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-29 09:15:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:36,565 INFO L225 Difference]: With dead ends: 794 [2020-10-29 09:15:36,566 INFO L226 Difference]: Without dead ends: 474 [2020-10-29 09:15:36,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:15:36,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-29 09:15:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 440. [2020-10-29 09:15:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-10-29 09:15:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2020-10-29 09:15:36,632 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 55 [2020-10-29 09:15:36,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:36,633 INFO L481 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2020-10-29 09:15:36,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:15:36,633 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2020-10-29 09:15:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:15:36,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:36,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:36,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:15:36,636 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:36,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1443073009, now seen corresponding path program 3 times [2020-10-29 09:15:36,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:36,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702558056] [2020-10-29 09:15:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:40,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:40,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:15:40,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:15:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4149 [2020-10-29 09:15:40,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:40,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:15:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 09:15:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:41,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:41,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:41,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:41,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:41,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:41,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:41,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:41,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:41,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:41,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:41,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:15:41,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:41,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:15:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:15:41,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:41,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:41,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:15:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:15:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:41,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:15:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:15:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:15:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:41,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:41,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:15:41,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 09:15:41,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:41,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:15:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:15:41,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 09:15:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:42,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:42,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:42,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:42,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:42,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:15:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:42,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702558056] [2020-10-29 09:15:42,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:42,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 09:15:42,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224353617] [2020-10-29 09:15:42,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 09:15:42,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:42,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 09:15:42,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:15:42,383 INFO L87 Difference]: Start difference. First operand 440 states and 608 transitions. Second operand 25 states. [2020-10-29 09:15:43,053 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-29 09:15:43,372 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-29 09:15:44,007 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-29 09:15:44,236 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-29 09:15:45,478 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-29 09:15:46,250 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-29 09:15:46,569 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-29 09:15:46,892 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-29 09:15:47,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:47,652 INFO L93 Difference]: Finished difference Result 634 states and 913 transitions. [2020-10-29 09:15:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:15:47,653 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 55 [2020-10-29 09:15:47,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:47,660 INFO L225 Difference]: With dead ends: 634 [2020-10-29 09:15:47,660 INFO L226 Difference]: Without dead ends: 630 [2020-10-29 09:15:47,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=269, Invalid=2281, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 09:15:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-10-29 09:15:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 575. [2020-10-29 09:15:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-29 09:15:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 828 transitions. [2020-10-29 09:15:47,729 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 828 transitions. Word has length 55 [2020-10-29 09:15:47,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:47,729 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 828 transitions. [2020-10-29 09:15:47,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 09:15:47,729 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 828 transitions. [2020-10-29 09:15:47,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:15:47,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:47,734 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:47,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:15:47,734 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:47,734 INFO L82 PathProgramCache]: Analyzing trace with hash 734934167, now seen corresponding path program 1 times [2020-10-29 09:15:47,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:47,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609137196] [2020-10-29 09:15:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:52,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:52,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:15:52,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:15:52,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:15:52,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:52,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:15:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:15:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:52,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:52,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:52,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:52,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:52,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:52,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:15:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:53,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:53,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:53,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:15:53,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:53,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:15:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:15:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:15:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:53,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:15:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:15:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:53,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:15:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:15:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:15:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:15:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:53,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:53,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:15:53,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 09:15:53,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:53,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:15:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:15:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:15:53,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:15:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:15:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:54,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:54,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:54,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:54,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:54,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:15:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:15:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:54,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609137196] [2020-10-29 09:15:54,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:54,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:15:54,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015209993] [2020-10-29 09:15:54,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:15:54,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:54,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:15:54,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:15:54,169 INFO L87 Difference]: Start difference. First operand 575 states and 828 transitions. Second operand 23 states. [2020-10-29 09:15:55,600 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-29 09:15:55,892 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-29 09:15:57,225 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-29 09:15:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:57,635 INFO L93 Difference]: Finished difference Result 732 states and 1083 transitions. [2020-10-29 09:15:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:15:57,638 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2020-10-29 09:15:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:57,643 INFO L225 Difference]: With dead ends: 732 [2020-10-29 09:15:57,643 INFO L226 Difference]: Without dead ends: 728 [2020-10-29 09:15:57,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=207, Invalid=1685, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:15:57,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-29 09:15:57,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 579. [2020-10-29 09:15:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-29 09:15:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 834 transitions. [2020-10-29 09:15:57,720 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 834 transitions. Word has length 56 [2020-10-29 09:15:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:57,721 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 834 transitions. [2020-10-29 09:15:57,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:15:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 834 transitions. [2020-10-29 09:15:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:15:57,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:57,723 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:57,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:15:57,723 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:57,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1437881979, now seen corresponding path program 1 times [2020-10-29 09:15:57,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:57,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347353036] [2020-10-29 09:15:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:00,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:16:00,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:16:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2783 [2020-10-29 09:16:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:00,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:16:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 09:16:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:00,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:00,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:16:00,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:00,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:16:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:00,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:00,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:00,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:00,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:16:00,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:00,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:16:00,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:16:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:16:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:00,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:00,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:16:00,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:00,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:16:00,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:00,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:16:00,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:16:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:01,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:01,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:01,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:01,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:16:01,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:16:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 09:16:01,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:01,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:16:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:16:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:16:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:16:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:01,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:01,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:16:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:16:01,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347353036] [2020-10-29 09:16:01,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:01,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:16:01,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648319092] [2020-10-29 09:16:01,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:16:01,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:01,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:16:01,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:16:01,623 INFO L87 Difference]: Start difference. First operand 579 states and 834 transitions. Second operand 18 states. [2020-10-29 09:16:04,157 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-29 09:16:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:04,756 INFO L93 Difference]: Finished difference Result 1073 states and 1544 transitions. [2020-10-29 09:16:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:16:04,758 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-29 09:16:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:04,762 INFO L225 Difference]: With dead ends: 1073 [2020-10-29 09:16:04,763 INFO L226 Difference]: Without dead ends: 617 [2020-10-29 09:16:04,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:16:04,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-29 09:16:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 463. [2020-10-29 09:16:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-29 09:16:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 634 transitions. [2020-10-29 09:16:04,823 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 634 transitions. Word has length 56 [2020-10-29 09:16:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:04,824 INFO L481 AbstractCegarLoop]: Abstraction has 463 states and 634 transitions. [2020-10-29 09:16:04,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:16:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 634 transitions. [2020-10-29 09:16:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:16:04,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:04,825 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:04,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:16:04,826 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1141190274, now seen corresponding path program 4 times [2020-10-29 09:16:04,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:04,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86708596] [2020-10-29 09:16:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:05,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:09,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:09,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:16:09,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:16:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 09:16:09,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:09,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:16:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 09:16:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:10,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:10,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:10,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:10,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:10,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:16:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:10,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:10,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:10,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:16:10,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:10,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:16:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:16:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:10,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:10,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:10,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:16:10,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:10,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:10,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:16:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 09:16:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:10,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:10,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:10,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:16:10,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:10,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:16:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:10,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:10,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:16:10,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:16:10,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:10,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:16:10,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:16:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:10,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:10,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:10,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:16:10,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:10,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:16:10,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86708596] [2020-10-29 09:16:10,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:10,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:16:10,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661812722] [2020-10-29 09:16:10,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:16:10,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:16:10,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:16:10,488 INFO L87 Difference]: Start difference. First operand 463 states and 634 transitions. Second operand 17 states. [2020-10-29 09:16:10,965 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-10-29 09:16:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:13,759 INFO L93 Difference]: Finished difference Result 657 states and 912 transitions. [2020-10-29 09:16:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:16:13,760 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-29 09:16:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:13,766 INFO L225 Difference]: With dead ends: 657 [2020-10-29 09:16:13,766 INFO L226 Difference]: Without dead ends: 653 [2020-10-29 09:16:13,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=216, Invalid=1266, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 09:16:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-29 09:16:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 501. [2020-10-29 09:16:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-10-29 09:16:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 685 transitions. [2020-10-29 09:16:13,830 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 685 transitions. Word has length 58 [2020-10-29 09:16:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:13,830 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 685 transitions. [2020-10-29 09:16:13,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:16:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 685 transitions. [2020-10-29 09:16:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:16:13,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:13,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:16:13,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:16:13,832 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:13,833 INFO L82 PathProgramCache]: Analyzing trace with hash -590231859, now seen corresponding path program 1 times [2020-10-29 09:16:13,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:13,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326892527] [2020-10-29 09:16:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:18,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 09:16:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:19,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:16:19,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:16:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:19,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:19,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:16:19,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:16:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:16:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:19,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:16:19,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:16:19,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:16:19,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:16:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:16:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:16:19,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:16:19,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:19,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:16:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:16:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:19,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:19,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:19,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:16:19,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 09:16:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:16:19,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:16:19,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:16:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 09:16:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:19,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:19,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:19,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:19,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:16:19,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:19,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:16:19,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326892527] [2020-10-29 09:16:19,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:19,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:16:19,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878443142] [2020-10-29 09:16:19,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:16:19,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:19,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:16:19,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:16:19,245 INFO L87 Difference]: Start difference. First operand 501 states and 685 transitions. Second operand 14 states. [2020-10-29 09:16:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:20,453 INFO L93 Difference]: Finished difference Result 568 states and 778 transitions. [2020-10-29 09:16:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:16:20,454 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-29 09:16:20,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:20,457 INFO L225 Difference]: With dead ends: 568 [2020-10-29 09:16:20,458 INFO L226 Difference]: Without dead ends: 564 [2020-10-29 09:16:20,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:16:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-29 09:16:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 522. [2020-10-29 09:16:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-29 09:16:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 710 transitions. [2020-10-29 09:16:20,525 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 710 transitions. Word has length 61 [2020-10-29 09:16:20,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:20,526 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 710 transitions. [2020-10-29 09:16:20,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:16:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 710 transitions. [2020-10-29 09:16:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:16:20,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:20,527 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:20,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:16:20,528 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:20,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1518162171, now seen corresponding path program 5 times [2020-10-29 09:16:20,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:20,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483880431] [2020-10-29 09:16:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:23,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:25,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:25,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 09:16:25,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:16:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5239 [2020-10-29 09:16:25,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:25,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:16:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:16:25,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:26,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:26,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:26,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:26,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:26,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:26,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:26,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:26,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:16:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:16:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:16:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:16:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:26,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:26,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:16:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 09:16:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:26,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:26,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:26,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:26,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:16:26,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:26,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:16:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:26,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:16:26,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:26,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:16:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:26,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:26,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:26,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:16:26,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:16:26,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:26,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:16:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:16:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:26,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:16:26,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:26,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:26,910 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 09:16:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 09:16:26,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483880431] [2020-10-29 09:16:26,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:26,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:16:26,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745815215] [2020-10-29 09:16:26,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:16:26,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:26,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:16:26,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:16:26,939 INFO L87 Difference]: Start difference. First operand 522 states and 710 transitions. Second operand 21 states. [2020-10-29 09:16:27,515 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-29 09:16:28,289 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-29 09:16:29,594 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-29 09:16:29,788 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-29 09:16:30,040 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-29 09:16:30,255 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-29 09:16:30,469 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-29 09:16:31,712 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-29 09:16:31,941 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-29 09:16:32,165 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-29 09:16:32,398 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-10-29 09:16:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:32,757 INFO L93 Difference]: Finished difference Result 1139 states and 1560 transitions. [2020-10-29 09:16:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 09:16:32,757 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 61 [2020-10-29 09:16:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:32,762 INFO L225 Difference]: With dead ends: 1139 [2020-10-29 09:16:32,762 INFO L226 Difference]: Without dead ends: 703 [2020-10-29 09:16:32,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=344, Invalid=2206, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 09:16:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-29 09:16:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 559. [2020-10-29 09:16:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-29 09:16:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 759 transitions. [2020-10-29 09:16:32,839 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 759 transitions. Word has length 61 [2020-10-29 09:16:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:32,839 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 759 transitions. [2020-10-29 09:16:32,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:16:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 759 transitions. [2020-10-29 09:16:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 09:16:32,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:32,841 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:32,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:16:32,842 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:32,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:32,842 INFO L82 PathProgramCache]: Analyzing trace with hash -2038777891, now seen corresponding path program 6 times [2020-10-29 09:16:32,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:32,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696372410] [2020-10-29 09:16:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:37,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:37,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 09:16:37,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:16:37,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 09:16:37,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:37,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:37,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:16:37,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:37,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 09:16:37,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:38,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:38,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:16:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:38,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:38,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:38,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:38,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:16:38,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:38,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:16:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:38,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:38,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:16:38,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:16:38,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:38,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:16:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:16:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:38,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:38,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:38,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:38,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:16:38,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:38,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:16:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:38,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:38,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:16:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:16:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:38,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:16:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 09:16:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:38,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:38,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:38,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:38,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:16:38,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:38,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:39,252 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 09:16:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 35 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 09:16:39,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696372410] [2020-10-29 09:16:39,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:39,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:16:39,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255790583] [2020-10-29 09:16:39,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:16:39,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:16:39,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:16:39,283 INFO L87 Difference]: Start difference. First operand 559 states and 759 transitions. Second operand 20 states. [2020-10-29 09:16:40,384 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 119 [2020-10-29 09:16:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:43,450 INFO L93 Difference]: Finished difference Result 938 states and 1294 transitions. [2020-10-29 09:16:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:16:43,451 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-29 09:16:43,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:43,457 INFO L225 Difference]: With dead ends: 938 [2020-10-29 09:16:43,457 INFO L226 Difference]: Without dead ends: 934 [2020-10-29 09:16:43,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:16:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-10-29 09:16:43,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 897. [2020-10-29 09:16:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-29 09:16:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1243 transitions. [2020-10-29 09:16:43,589 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1243 transitions. Word has length 67 [2020-10-29 09:16:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:43,590 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 1243 transitions. [2020-10-29 09:16:43,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:16:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1243 transitions. [2020-10-29 09:16:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:16:43,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:43,593 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:16:43,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:16:43,593 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash 678848641, now seen corresponding path program 4 times [2020-10-29 09:16:43,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:43,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465326084] [2020-10-29 09:16:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 09:16:48,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:16:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:16:48,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:16:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:16:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:48,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:48,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:48,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:16:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:48,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:16:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:16:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:16:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:16:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:16:48,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:48,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:16:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 09:16:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:48,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:16:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:16:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 09:16:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:16:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:16:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 09:16:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 09:16:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:48,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:48,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:16:48,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:48,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:16:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:16:48,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465326084] [2020-10-29 09:16:48,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:48,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:16:48,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528591908] [2020-10-29 09:16:48,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:16:48,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:49,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:16:49,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:16:49,000 INFO L87 Difference]: Start difference. First operand 897 states and 1243 transitions. Second operand 15 states. [2020-10-29 09:16:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:16:50,530 INFO L93 Difference]: Finished difference Result 1496 states and 2072 transitions. [2020-10-29 09:16:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:16:50,531 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2020-10-29 09:16:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:16:50,535 INFO L225 Difference]: With dead ends: 1496 [2020-10-29 09:16:50,535 INFO L226 Difference]: Without dead ends: 385 [2020-10-29 09:16:50,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:16:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-29 09:16:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 363. [2020-10-29 09:16:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-29 09:16:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 479 transitions. [2020-10-29 09:16:50,589 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 479 transitions. Word has length 70 [2020-10-29 09:16:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:16:50,589 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 479 transitions. [2020-10-29 09:16:50,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:16:50,589 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 479 transitions. [2020-10-29 09:16:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:16:50,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:16:50,591 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:16:50,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:16:50,591 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:16:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:16:50,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1856117814, now seen corresponding path program 7 times [2020-10-29 09:16:50,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:16:50,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136814364] [2020-10-29 09:16:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:16:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:50,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:51,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:55,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:55,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 09:16:55,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:16:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:16:55,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:55,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:16:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:16:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 09:16:55,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:56,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:16:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:56,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:56,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:56,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:16:56,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:56,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:16:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:16:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:56,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:16:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:56,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:56,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:56,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:16:56,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:56,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:16:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:56,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:56,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:16:56,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:16:56,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:56,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:16:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:16:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:56,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:56,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:56,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:16:56,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:56,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:56,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:56,668 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-29 09:16:56,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:16:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:56,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:16:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:16:56,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:56,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:16:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:16:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:16:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 09:16:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:16:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:16:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:16:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:16:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 09:16:56,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136814364] [2020-10-29 09:16:56,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:16:56,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:16:56,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400121788] [2020-10-29 09:16:56,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:16:56,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:16:56,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:16:56,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:16:56,990 INFO L87 Difference]: Start difference. First operand 363 states and 479 transitions. Second operand 20 states. [2020-10-29 09:16:57,824 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-10-29 09:16:59,104 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-29 09:17:00,140 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-29 09:17:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:17:00,588 INFO L93 Difference]: Finished difference Result 650 states and 877 transitions. [2020-10-29 09:17:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:17:00,589 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-10-29 09:17:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:17:00,592 INFO L225 Difference]: With dead ends: 650 [2020-10-29 09:17:00,592 INFO L226 Difference]: Without dead ends: 373 [2020-10-29 09:17:00,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:17:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-29 09:17:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 362. [2020-10-29 09:17:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-29 09:17:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 476 transitions. [2020-10-29 09:17:00,641 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 476 transitions. Word has length 70 [2020-10-29 09:17:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:17:00,642 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 476 transitions. [2020-10-29 09:17:00,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:17:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 476 transitions. [2020-10-29 09:17:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 09:17:00,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:17:00,643 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:17:00,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:17:00,644 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:17:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:17:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1207882409, now seen corresponding path program 5 times [2020-10-29 09:17:00,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:17:00,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740672878] [2020-10-29 09:17:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:17:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 09:17:05,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:17:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:17:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:05,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:17:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:17:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 09:17:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:17:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:05,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:05,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:05,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:05,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:05,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:05,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:05,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:17:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:05,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:05,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:05,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:05,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:17:05,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:05,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:05,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:05,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:05,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:17:05,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:17:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:05,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:05,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:05,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:05,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:17:05,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:05,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:17:05,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:17:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:05,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:05,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:17:05,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:05,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:17:05,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:17:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:05,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:17:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:17:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:17:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:17:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 09:17:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:06,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:06,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:06,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:06,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:17:06,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:06,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:17:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 09:17:06,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740672878] [2020-10-29 09:17:06,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:17:06,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:17:06,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557362139] [2020-10-29 09:17:06,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:17:06,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:17:06,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:17:06,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:17:06,253 INFO L87 Difference]: Start difference. First operand 362 states and 476 transitions. Second operand 17 states. [2020-10-29 09:17:08,303 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-29 09:17:08,502 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-29 09:17:09,037 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-29 09:17:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:17:09,247 INFO L93 Difference]: Finished difference Result 707 states and 949 transitions. [2020-10-29 09:17:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:17:09,251 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-29 09:17:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:17:09,255 INFO L225 Difference]: With dead ends: 707 [2020-10-29 09:17:09,255 INFO L226 Difference]: Without dead ends: 433 [2020-10-29 09:17:09,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:17:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-29 09:17:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 407. [2020-10-29 09:17:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-29 09:17:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 536 transitions. [2020-10-29 09:17:09,311 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 536 transitions. Word has length 76 [2020-10-29 09:17:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:17:09,311 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 536 transitions. [2020-10-29 09:17:09,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:17:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 536 transitions. [2020-10-29 09:17:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 09:17:09,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:17:09,313 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:17:09,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:17:09,313 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:17:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:17:09,314 INFO L82 PathProgramCache]: Analyzing trace with hash 756656770, now seen corresponding path program 6 times [2020-10-29 09:17:09,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:17:09,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123072068] [2020-10-29 09:17:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:17:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:12,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2863 [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 09:17:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:17:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:12,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:12,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:12,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:12,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:12,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:12,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:12,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:17:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:12,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:17:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:17:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:12,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:12,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:12,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:12,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:12,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:17:12,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:12,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:12,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:12,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:17:12,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:12,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:17:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:17:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:17:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:12,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:12,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:17:12,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:12,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:17:12,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:12,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:17:12,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:12,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:17:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:12,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:12,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:12,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:17:12,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 09:17:12,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:12,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:17:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:17:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 09:17:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:13,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:13,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:13,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 09:17:13,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:13,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:17:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 09:17:13,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123072068] [2020-10-29 09:17:13,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:17:13,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:17:13,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376850595] [2020-10-29 09:17:13,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:17:13,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:17:13,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:17:13,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:17:13,132 INFO L87 Difference]: Start difference. First operand 407 states and 536 transitions. Second operand 16 states. [2020-10-29 09:17:13,677 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-29 09:17:14,243 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-29 09:17:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:17:15,507 INFO L93 Difference]: Finished difference Result 738 states and 995 transitions. [2020-10-29 09:17:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:17:15,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-10-29 09:17:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:17:15,510 INFO L225 Difference]: With dead ends: 738 [2020-10-29 09:17:15,510 INFO L226 Difference]: Without dead ends: 421 [2020-10-29 09:17:15,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:17:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-29 09:17:15,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-10-29 09:17:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-29 09:17:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 563 transitions. [2020-10-29 09:17:15,570 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 563 transitions. Word has length 76 [2020-10-29 09:17:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:17:15,570 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 563 transitions. [2020-10-29 09:17:15,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:17:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 563 transitions. [2020-10-29 09:17:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 09:17:15,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:17:15,572 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:17:15,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 09:17:15,572 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:17:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:17:15,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1241948908, now seen corresponding path program 2 times [2020-10-29 09:17:15,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:17:15,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005936033] [2020-10-29 09:17:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:17:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:17,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:20,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:17:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:17:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:20,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:20,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:20,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:20,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:20,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:17:20,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:20,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:20,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:17:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:20,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:20,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:20,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:17:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:20,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:17:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:17:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:20,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:20,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:20,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:20,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:17:20,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:20,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:17:20,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:20,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:17:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:20,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:20,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:20,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:17:20,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:20,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:17:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:20,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:17:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:20,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:20,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:17:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:17:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:20,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:17:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:17:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:20,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:20,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:17:20,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:20,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 09:17:20,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:20,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:17:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:17:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 09:17:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:21,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:21,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:21,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:21,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:17:21,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:21,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:17:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 09:17:21,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005936033] [2020-10-29 09:17:21,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:17:21,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:17:21,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352772363] [2020-10-29 09:17:21,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:17:21,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:17:21,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:17:21,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:17:21,070 INFO L87 Difference]: Start difference. First operand 421 states and 563 transitions. Second operand 12 states. [2020-10-29 09:17:21,766 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-29 09:17:21,925 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-29 09:17:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:17:22,438 INFO L93 Difference]: Finished difference Result 764 states and 1037 transitions. [2020-10-29 09:17:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:17:22,441 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-10-29 09:17:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:17:22,444 INFO L225 Difference]: With dead ends: 764 [2020-10-29 09:17:22,445 INFO L226 Difference]: Without dead ends: 435 [2020-10-29 09:17:22,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:17:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-29 09:17:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 421. [2020-10-29 09:17:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-29 09:17:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 562 transitions. [2020-10-29 09:17:22,502 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 562 transitions. Word has length 77 [2020-10-29 09:17:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:17:22,502 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 562 transitions. [2020-10-29 09:17:22,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:17:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 562 transitions. [2020-10-29 09:17:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 09:17:22,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:17:22,504 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:17:22,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 09:17:22,504 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:17:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:17:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash 459769912, now seen corresponding path program 3 times [2020-10-29 09:17:22,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:17:22,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307508379] [2020-10-29 09:17:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:17:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:22,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2713 [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:17:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:17:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:25,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:25,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:25,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:17:25,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:25,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:17:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:25,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:17:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:25,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:25,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:17:25,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:25,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:17:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:25,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:25,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:17:25,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:25,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:17:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:17:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:17:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:17:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:17:25,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:25,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:17:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:25,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:17:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:25,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:17:25,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:17:25,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 09:17:25,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:25,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:17:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:17:25,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 09:17:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:25,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:25,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:25,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:17:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:25,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:17:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 09:17:25,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307508379] [2020-10-29 09:17:25,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:17:25,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:17:25,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781719906] [2020-10-29 09:17:25,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:17:25,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:17:25,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:17:25,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:17:25,479 INFO L87 Difference]: Start difference. First operand 421 states and 562 transitions. Second operand 10 states. [2020-10-29 09:17:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:17:26,392 INFO L93 Difference]: Finished difference Result 777 states and 1059 transitions. [2020-10-29 09:17:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:17:26,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-29 09:17:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:17:26,395 INFO L225 Difference]: With dead ends: 777 [2020-10-29 09:17:26,395 INFO L226 Difference]: Without dead ends: 448 [2020-10-29 09:17:26,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:17:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-29 09:17:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 435. [2020-10-29 09:17:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-29 09:17:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 584 transitions. [2020-10-29 09:17:26,453 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 584 transitions. Word has length 80 [2020-10-29 09:17:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:17:26,454 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 584 transitions. [2020-10-29 09:17:26,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:17:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 584 transitions. [2020-10-29 09:17:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 09:17:26,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:17:26,455 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:17:26,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 09:17:26,456 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:17:26,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:17:26,456 INFO L82 PathProgramCache]: Analyzing trace with hash -894442783, now seen corresponding path program 2 times [2020-10-29 09:17:26,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:17:26,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753926370] [2020-10-29 09:17:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:17:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:26,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:31,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 09:17:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:17:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:17:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:31,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:31,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:31,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:31,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:17:31,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:31,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:17:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:17:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:17:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:17:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:17:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:17:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:31,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:31,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:17:31,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:17:31,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:31,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:17:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:17:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:31,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:17:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:32,120 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-10-29 09:17:32,397 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-29 09:17:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 09:17:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:32,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:17:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 09:17:32,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753926370] [2020-10-29 09:17:32,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:17:32,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:17:32,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005425263] [2020-10-29 09:17:32,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:17:32,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:17:32,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:17:32,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:17:32,720 INFO L87 Difference]: Start difference. First operand 435 states and 584 transitions. Second operand 19 states. [2020-10-29 09:17:33,642 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-29 09:17:34,034 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-29 09:17:34,281 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-29 09:17:34,837 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-29 09:17:35,816 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-29 09:17:36,478 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-29 09:17:37,062 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-29 09:17:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:17:37,196 INFO L93 Difference]: Finished difference Result 856 states and 1168 transitions. [2020-10-29 09:17:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 09:17:37,197 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-29 09:17:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:17:37,201 INFO L225 Difference]: With dead ends: 856 [2020-10-29 09:17:37,201 INFO L226 Difference]: Without dead ends: 510 [2020-10-29 09:17:37,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=222, Invalid=1670, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:17:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-29 09:17:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 477. [2020-10-29 09:17:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-29 09:17:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 640 transitions. [2020-10-29 09:17:37,266 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 640 transitions. Word has length 80 [2020-10-29 09:17:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:17:37,267 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 640 transitions. [2020-10-29 09:17:37,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:17:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 640 transitions. [2020-10-29 09:17:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 09:17:37,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:17:37,269 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 09:17:37,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 09:17:37,269 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:17:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:17:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1345668422, now seen corresponding path program 3 times [2020-10-29 09:17:37,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:17:37,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910579713] [2020-10-29 09:17:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:17:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:37,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:42,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:42,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 09:17:42,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:17:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 09:17:42,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:42,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:17:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:17:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 09:17:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:42,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:17:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:42,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:42,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:42,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:42,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:42,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:42,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:42,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:17:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:42,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:42,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:17:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:17:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:42,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:42,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:42,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:17:42,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:42,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:17:42,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:42,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:17:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:42,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:17:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:17:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:42,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:42,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:17:42,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:17:42,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:42,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:17:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:42,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:17:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:43,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:17:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:43,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 09:17:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:43,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:43,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:43,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:17:43,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:43,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:17:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 14 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 09:17:43,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910579713] [2020-10-29 09:17:43,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:17:43,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:17:43,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129377288] [2020-10-29 09:17:43,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:17:43,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:17:43,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:17:43,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:17:43,581 INFO L87 Difference]: Start difference. First operand 477 states and 640 transitions. Second operand 17 states. [2020-10-29 09:17:44,241 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-29 09:17:44,870 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-29 09:17:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:17:46,532 INFO L93 Difference]: Finished difference Result 866 states and 1174 transitions. [2020-10-29 09:17:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:17:46,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-10-29 09:17:46,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:17:46,540 INFO L225 Difference]: With dead ends: 866 [2020-10-29 09:17:46,540 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 09:17:46,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:17:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 09:17:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 465. [2020-10-29 09:17:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-29 09:17:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 618 transitions. [2020-10-29 09:17:46,609 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 618 transitions. Word has length 80 [2020-10-29 09:17:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:17:46,610 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 618 transitions. [2020-10-29 09:17:46,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:17:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 618 transitions. [2020-10-29 09:17:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 09:17:46,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:17:46,612 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:17:46,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 09:17:46,612 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:17:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:17:46,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1260367111, now seen corresponding path program 7 times [2020-10-29 09:17:46,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:17:46,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729867470] [2020-10-29 09:17:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:17:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 09:17:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:51,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:17:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:51,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:17:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:51,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:51,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:17:51,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:51,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:17:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:17:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:51,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:17:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:17:51,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:51,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:17:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:51,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:17:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:51,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:17:51,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:17:51,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:51,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:17:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:17:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:51,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 09:17:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:51,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:51,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:17:51,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:51,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:17:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 09:17:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:17:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 09:17:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:51,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:51,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:51,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:17:51,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:51,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:17:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 09:17:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:52,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:17:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 09:17:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:52,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:52,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:52,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:52,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:17:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 09:17:52,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729867470] [2020-10-29 09:17:52,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:17:52,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:17:52,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172773338] [2020-10-29 09:17:52,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:17:52,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:17:52,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:17:52,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:17:52,154 INFO L87 Difference]: Start difference. First operand 465 states and 618 transitions. Second operand 18 states. [2020-10-29 09:17:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:17:53,806 INFO L93 Difference]: Finished difference Result 862 states and 1166 transitions. [2020-10-29 09:17:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:17:53,807 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 88 [2020-10-29 09:17:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:17:53,811 INFO L225 Difference]: With dead ends: 862 [2020-10-29 09:17:53,811 INFO L226 Difference]: Without dead ends: 444 [2020-10-29 09:17:53,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:17:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-29 09:17:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 426. [2020-10-29 09:17:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-29 09:17:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 568 transitions. [2020-10-29 09:17:53,876 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 568 transitions. Word has length 88 [2020-10-29 09:17:53,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:17:53,876 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 568 transitions. [2020-10-29 09:17:53,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:17:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 568 transitions. [2020-10-29 09:17:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 09:17:53,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:17:53,878 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:17:53,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 09:17:53,879 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:17:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:17:53,879 INFO L82 PathProgramCache]: Analyzing trace with hash -544570130, now seen corresponding path program 8 times [2020-10-29 09:17:53,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:17:53,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379803042] [2020-10-29 09:17:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:17:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:58,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 09:17:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:17:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:59,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:59,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:59,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:59,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:59,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:59,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:17:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:59,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:59,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:17:59,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:59,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:17:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:17:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:17:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:59,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:17:59,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:17:59,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:59,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:17:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:17:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:59,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:59,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:17:59,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:17:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:59,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:17:59,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 09:17:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:59,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:17:59,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 09:17:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:59,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:17:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 09:17:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:17:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:17:59,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:17:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:17:59,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:17:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:17:59,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:17:59,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:17:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:17:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:17:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:17:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:17:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 114 proven. 31 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 09:17:59,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379803042] [2020-10-29 09:17:59,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:17:59,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:17:59,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72320396] [2020-10-29 09:17:59,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:17:59,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:17:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:17:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:17:59,760 INFO L87 Difference]: Start difference. First operand 426 states and 568 transitions. Second operand 19 states. [2020-10-29 09:18:00,245 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-10-29 09:18:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:18:02,336 INFO L93 Difference]: Finished difference Result 829 states and 1127 transitions. [2020-10-29 09:18:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:18:02,337 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 88 [2020-10-29 09:18:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:18:02,340 INFO L225 Difference]: With dead ends: 829 [2020-10-29 09:18:02,340 INFO L226 Difference]: Without dead ends: 470 [2020-10-29 09:18:02,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:18:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-29 09:18:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 428. [2020-10-29 09:18:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-29 09:18:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 569 transitions. [2020-10-29 09:18:02,398 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 569 transitions. Word has length 88 [2020-10-29 09:18:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:18:02,399 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 569 transitions. [2020-10-29 09:18:02,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:18:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 569 transitions. [2020-10-29 09:18:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 09:18:02,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:18:02,401 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:18:02,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 09:18:02,401 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:18:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:18:02,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1888710157, now seen corresponding path program 2 times [2020-10-29 09:18:02,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:18:02,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282490437] [2020-10-29 09:18:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:18:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:02,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 09:18:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:18:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:07,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:18:07,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:18:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:18:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:18:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:07,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:18:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:18:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:18:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:18:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:18:07,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:18:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 09:18:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:18:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:18:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:18:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 09:18:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:18:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 09:18:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:18:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:18:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:18:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 09:18:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:18:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:18:07,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:18:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 09:18:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:07,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:07,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:07,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:18:07,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:07,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:18:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:18:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:18:07,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 46 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 09:18:08,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282490437] [2020-10-29 09:18:08,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:18:08,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:18:08,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227411000] [2020-10-29 09:18:08,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:18:08,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:18:08,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:18:08,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:18:08,116 INFO L87 Difference]: Start difference. First operand 428 states and 569 transitions. Second operand 18 states. [2020-10-29 09:18:08,638 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-29 09:18:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:18:10,161 INFO L93 Difference]: Finished difference Result 437 states and 583 transitions. [2020-10-29 09:18:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:18:10,162 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-29 09:18:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:18:10,165 INFO L225 Difference]: With dead ends: 437 [2020-10-29 09:18:10,165 INFO L226 Difference]: Without dead ends: 433 [2020-10-29 09:18:10,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:18:10,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-29 09:18:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2020-10-29 09:18:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-29 09:18:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 569 transitions. [2020-10-29 09:18:10,227 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 569 transitions. Word has length 89 [2020-10-29 09:18:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:18:10,227 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 569 transitions. [2020-10-29 09:18:10,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:18:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 569 transitions. [2020-10-29 09:18:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 09:18:10,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:18:10,229 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:18:10,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 09:18:10,230 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:18:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:18:10,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1867645151, now seen corresponding path program 9 times [2020-10-29 09:18:10,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:18:10,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611163166] [2020-10-29 09:18:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:18:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:10,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:11,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking...