/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=SHALLOWEST --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/eca-rers2012/Problem16_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:57:58,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:57:58,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:57:58,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:57:58,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:57:58,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:57:58,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:57:58,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:57:58,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:57:58,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:57:58,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:57:58,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:57:58,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:57:58,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:57:58,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:57:58,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:57:58,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:57:58,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:57:58,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:57:58,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:57:58,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:57:58,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:57:58,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:57:58,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:57:58,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:57:58,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:57:58,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:57:58,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:57:58,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:57:58,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:57:58,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:57:58,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:57:58,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:57:58,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:57:58,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:57:58,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:57:58,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:57:58,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:57:58,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:57:58,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:57:58,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:57:58,852 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 [2020-10-26 23:57:58,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:57:58,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:57:58,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:57:58,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:57:58,901 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:57:58,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:57:58,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:57:58,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:57:58,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:57:58,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:57:58,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:57:58,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:57:58,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:57:58,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:57:58,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:57:58,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:57:58,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:57:58,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:57:58,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:57:58,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:57:58,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:57:58,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:57:58,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:57:58,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:57:58,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:57:58,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:57:58,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:57:58,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:57:58,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:57:58,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:57:59,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:57:59,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:57:59,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:57:59,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:57:59,427 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:57:59,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label31.c [2020-10-26 23:57:59,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c92d9da9f/7e1942f8cf914afa92df8384f5b3765e/FLAG2ec891351 [2020-10-26 23:58:00,293 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:58:00,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label31.c [2020-10-26 23:58:00,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c92d9da9f/7e1942f8cf914afa92df8384f5b3765e/FLAG2ec891351 [2020-10-26 23:58:00,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c92d9da9f/7e1942f8cf914afa92df8384f5b3765e [2020-10-26 23:58:00,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:58:00,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:58:00,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:58:00,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:58:00,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:58:00,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:58:00" (1/1) ... [2020-10-26 23:58:00,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7c8e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:00, skipping insertion in model container [2020-10-26 23:58:00,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:58:00" (1/1) ... [2020-10-26 23:58:00,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:58:00,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:58:01,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:58:01,333 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:58:01,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:58:01,608 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:58:01,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01 WrapperNode [2020-10-26 23:58:01,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:58:01,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:58:01,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:58:01,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:58:01,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (1/1) ... [2020-10-26 23:58:01,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (1/1) ... [2020-10-26 23:58:01,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (1/1) ... [2020-10-26 23:58:01,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (1/1) ... [2020-10-26 23:58:01,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (1/1) ... [2020-10-26 23:58:01,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (1/1) ... [2020-10-26 23:58:01,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (1/1) ... [2020-10-26 23:58:01,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:58:01,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:58:01,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:58:01,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:58:01,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (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 [2020-10-26 23:58:01,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:58:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:58:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:58:01,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:58:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:58:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:58:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:58:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:58:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:58:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:58:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:58:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:58:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:58:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:58:01,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:58:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:58:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:58:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:58:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:58:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:58:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:58:04,645 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:58:04,645 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:58:04,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:58:04 BoogieIcfgContainer [2020-10-26 23:58:04,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:58:04,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:58:04,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:58:04,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:58:04,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:58:00" (1/3) ... [2020-10-26 23:58:04,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7058fcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:58:04, skipping insertion in model container [2020-10-26 23:58:04,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:01" (2/3) ... [2020-10-26 23:58:04,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7058fcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:58:04, skipping insertion in model container [2020-10-26 23:58:04,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:58:04" (3/3) ... [2020-10-26 23:58:04,658 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label31.c [2020-10-26 23:58:04,671 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:58:04,677 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:58:04,710 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:58:04,744 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:58:04,744 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:58:04,744 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:58:04,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:58:04,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:58:04,745 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:58:04,745 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:58:04,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:58:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:58:04,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 23:58:04,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:04,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:04,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:04,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:04,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1926687852, now seen corresponding path program 1 times [2020-10-26 23:58:04,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:04,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891669911] [2020-10-26 23:58:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:05,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-26 23:58:05,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-26 23:58:05,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 23:58:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:58:05,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:05,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:58:05,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:58:05,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891669911] [2020-10-26 23:58:05,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:58:05,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:58:05,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709454459] [2020-10-26 23:58:05,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:58:05,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:05,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:58:05,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:58:05,626 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:58:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:10,295 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-26 23:58:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:58:10,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-26 23:58:10,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:10,339 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:58:10,340 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:58:10,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:58:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:58:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-26 23:58:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-26 23:58:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-26 23:58:10,495 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 15 [2020-10-26 23:58:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:10,496 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-26 23:58:10,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:58:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-26 23:58:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-26 23:58:10,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:10,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:10,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:58:10,502 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:10,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:10,503 INFO L82 PathProgramCache]: Analyzing trace with hash 954480813, now seen corresponding path program 1 times [2020-10-26 23:58:10,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:10,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35895132] [2020-10-26 23:58:10,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:11,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:58:11,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-26 23:58:11,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:58:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:11,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:11,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:58:11,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:12,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:58:12,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:12,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:58:12,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:58:12,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:58:12,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35895132] [2020-10-26 23:58:12,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:58:12,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:58:12,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124044660] [2020-10-26 23:58:12,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:12,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:12,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:12,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:12,316 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 7 states. [2020-10-26 23:58:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:17,197 INFO L93 Difference]: Finished difference Result 1741 states and 2664 transitions. [2020-10-26 23:58:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:58:17,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-26 23:58:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:17,209 INFO L225 Difference]: With dead ends: 1741 [2020-10-26 23:58:17,209 INFO L226 Difference]: Without dead ends: 1057 [2020-10-26 23:58:17,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-26 23:58:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1042. [2020-10-26 23:58:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-26 23:58:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1495 transitions. [2020-10-26 23:58:17,273 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1495 transitions. Word has length 90 [2020-10-26 23:58:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:17,273 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1495 transitions. [2020-10-26 23:58:17,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1495 transitions. [2020-10-26 23:58:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 23:58:17,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:17,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:17,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:58:17,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1002291563, now seen corresponding path program 1 times [2020-10-26 23:58:17,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:17,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260925578] [2020-10-26 23:58:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:18,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:18,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 23:58:18,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-26 23:58:18,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:58:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:18,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:18,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:18,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:58:18,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:18,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:18,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:18,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:18,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:58:18,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 23:58:18,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:58:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:58:18,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260925578] [2020-10-26 23:58:18,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:58:18,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:58:18,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062211919] [2020-10-26 23:58:18,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:18,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:18,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:18,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:18,516 INFO L87 Difference]: Start difference. First operand 1042 states and 1495 transitions. Second operand 7 states. [2020-10-26 23:58:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:23,968 INFO L93 Difference]: Finished difference Result 3168 states and 4637 transitions. [2020-10-26 23:58:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:58:23,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-26 23:58:23,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:23,983 INFO L225 Difference]: With dead ends: 3168 [2020-10-26 23:58:23,983 INFO L226 Difference]: Without dead ends: 2132 [2020-10-26 23:58:23,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-10-26 23:58:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2091. [2020-10-26 23:58:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2020-10-26 23:58:24,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 2717 transitions. [2020-10-26 23:58:24,070 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 2717 transitions. Word has length 91 [2020-10-26 23:58:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:24,071 INFO L481 AbstractCegarLoop]: Abstraction has 2091 states and 2717 transitions. [2020-10-26 23:58:24,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 2717 transitions. [2020-10-26 23:58:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-26 23:58:24,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:24,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:24,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:58:24,076 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:24,077 INFO L82 PathProgramCache]: Analyzing trace with hash -286826554, now seen corresponding path program 1 times [2020-10-26 23:58:24,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:24,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563646682] [2020-10-26 23:58:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:27,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:27,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-26 23:58:27,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:58:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3684 [2020-10-26 23:58:27,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:58:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-26 23:58:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:27,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:27,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:27,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:27,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:58:27,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:28,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:58:28,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-26 23:58:28,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:58:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:28,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:58:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:28,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:28,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:58:28,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:58:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-26 23:58:28,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:58:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:58:28,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563646682] [2020-10-26 23:58:28,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:28,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:58:28,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676833037] [2020-10-26 23:58:28,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:58:28,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:28,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:58:28,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:58:28,815 INFO L87 Difference]: Start difference. First operand 2091 states and 2717 transitions. Second operand 9 states. [2020-10-26 23:58:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:37,872 INFO L93 Difference]: Finished difference Result 5616 states and 7556 transitions. [2020-10-26 23:58:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:58:37,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-26 23:58:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:37,896 INFO L225 Difference]: With dead ends: 5616 [2020-10-26 23:58:37,896 INFO L226 Difference]: Without dead ends: 3531 [2020-10-26 23:58:37,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:58:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2020-10-26 23:58:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 2797. [2020-10-26 23:58:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2797 states. [2020-10-26 23:58:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3746 transitions. [2020-10-26 23:58:37,999 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3746 transitions. Word has length 178 [2020-10-26 23:58:38,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:38,000 INFO L481 AbstractCegarLoop]: Abstraction has 2797 states and 3746 transitions. [2020-10-26 23:58:38,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:58:38,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3746 transitions. [2020-10-26 23:58:38,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-26 23:58:38,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:38,041 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:58:38,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:58:38,041 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:38,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1764285980, now seen corresponding path program 1 times [2020-10-26 23:58:38,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:38,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670380666] [2020-10-26 23:58:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:38,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:39,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-26 23:58:43,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:58:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:58:43,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:58:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-26 23:58:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:43,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:58:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:58:43,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:58:43,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:58:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:58:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:43,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:43,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:43,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:58:43,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-26 23:58:43,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:58:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:44,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:58:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:44,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:44,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:44,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:44,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:58:44,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:58:44,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:44,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-26 23:58:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:44,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:44,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:44,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:44,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:44,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:58:44,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:44,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:44,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:44,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:44,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 212 proven. 212 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2020-10-26 23:58:45,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670380666] [2020-10-26 23:58:45,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:45,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:58:45,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40556478] [2020-10-26 23:58:45,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:58:45,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:45,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:58:45,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:58:45,036 INFO L87 Difference]: Start difference. First operand 2797 states and 3746 transitions. Second operand 8 states. [2020-10-26 23:58:52,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:52,665 INFO L93 Difference]: Finished difference Result 7007 states and 9387 transitions. [2020-10-26 23:58:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:58:52,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 463 [2020-10-26 23:58:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:52,686 INFO L225 Difference]: With dead ends: 7007 [2020-10-26 23:58:52,686 INFO L226 Difference]: Without dead ends: 3839 [2020-10-26 23:58:52,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:58:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2020-10-26 23:58:52,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3478. [2020-10-26 23:58:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3478 states. [2020-10-26 23:58:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 3874 transitions. [2020-10-26 23:58:52,804 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 3874 transitions. Word has length 463 [2020-10-26 23:58:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:52,805 INFO L481 AbstractCegarLoop]: Abstraction has 3478 states and 3874 transitions. [2020-10-26 23:58:52,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:58:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 3874 transitions. [2020-10-26 23:58:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-26 23:58:52,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:52,823 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-26 23:58:52,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:58:52,823 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:52,824 INFO L82 PathProgramCache]: Analyzing trace with hash 196477747, now seen corresponding path program 1 times [2020-10-26 23:58:52,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:52,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688237916] [2020-10-26 23:58:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:57,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:57,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-26 23:58:57,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:58:57,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:58:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:58,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:58,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:58,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:58,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:58:58,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:58,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:58,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:58,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:58,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:58:58,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:58:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:58,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:58:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:58,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:58,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:58:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:58:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:58,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:58:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:58,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:58,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:58:58,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:58,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:58,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:58:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:58,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:58,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:58:58,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:58:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-26 23:58:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:58,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:58,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:58,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:58:58,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 35 proven. 380 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-26 23:58:59,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688237916] [2020-10-26 23:58:59,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:59,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:59,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380202770] [2020-10-26 23:58:59,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:59,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:59,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:59,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:59,401 INFO L87 Difference]: Start difference. First operand 3478 states and 3874 transitions. Second operand 7 states. [2020-10-26 23:59:03,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:03,596 INFO L93 Difference]: Finished difference Result 10422 states and 11794 transitions. [2020-10-26 23:59:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:59:03,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 576 [2020-10-26 23:59:03,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:03,635 INFO L225 Difference]: With dead ends: 10422 [2020-10-26 23:59:03,635 INFO L226 Difference]: Without dead ends: 6950 [2020-10-26 23:59:03,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2020-10-26 23:59:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 6936. [2020-10-26 23:59:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6936 states. [2020-10-26 23:59:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 7763 transitions. [2020-10-26 23:59:03,852 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 7763 transitions. Word has length 576 [2020-10-26 23:59:03,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:03,853 INFO L481 AbstractCegarLoop]: Abstraction has 6936 states and 7763 transitions. [2020-10-26 23:59:03,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 7763 transitions. [2020-10-26 23:59:03,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-26 23:59:03,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:03,879 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:03,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:59:03,880 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:03,880 INFO L82 PathProgramCache]: Analyzing trace with hash 808080362, now seen corresponding path program 1 times [2020-10-26 23:59:03,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:03,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685995896] [2020-10-26 23:59:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 645 [2020-10-26 23:59:09,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:59:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:59:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-26 23:59:09,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:09,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:59:09,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:59:09,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-26 23:59:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:59:09,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-26 23:59:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:10,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 23:59:10,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-26 23:59:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:10,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:59:10,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-26 23:59:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:10,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:10,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:10,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:59:10,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 28 proven. 348 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-26 23:59:10,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685995896] [2020-10-26 23:59:10,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:10,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:10,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715836558] [2020-10-26 23:59:10,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:10,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:10,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:10,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:10,774 INFO L87 Difference]: Start difference. First operand 6936 states and 7763 transitions. Second operand 7 states. [2020-10-26 23:59:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:14,539 INFO L93 Difference]: Finished difference Result 13896 states and 15611 transitions. [2020-10-26 23:59:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:59:14,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 627 [2020-10-26 23:59:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:14,574 INFO L225 Difference]: With dead ends: 13896 [2020-10-26 23:59:14,574 INFO L226 Difference]: Without dead ends: 7303 [2020-10-26 23:59:14,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:59:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2020-10-26 23:59:14,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 7285. [2020-10-26 23:59:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7285 states. [2020-10-26 23:59:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7285 states to 7285 states and 8152 transitions. [2020-10-26 23:59:14,780 INFO L78 Accepts]: Start accepts. Automaton has 7285 states and 8152 transitions. Word has length 627 [2020-10-26 23:59:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:14,781 INFO L481 AbstractCegarLoop]: Abstraction has 7285 states and 8152 transitions. [2020-10-26 23:59:14,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7285 states and 8152 transitions. [2020-10-26 23:59:14,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2020-10-26 23:59:14,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:14,800 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:14,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:59:14,800 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:14,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:14,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1882627515, now seen corresponding path program 1 times [2020-10-26 23:59:14,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:14,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715517531] [2020-10-26 23:59:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:15,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 766 [2020-10-26 23:59:20,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-26 23:59:20,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:59:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:20,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:20,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:20,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:59:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:59:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:20,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-26 23:59:20,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:59:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:20,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:59:20,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:59:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:20,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:59:20,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:20,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:59:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:20,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:59:20,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:20,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 173 proven. 347 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2020-10-26 23:59:21,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715517531] [2020-10-26 23:59:21,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:21,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:21,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123272292] [2020-10-26 23:59:21,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:21,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:21,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:21,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:21,294 INFO L87 Difference]: Start difference. First operand 7285 states and 8152 transitions. Second operand 7 states. [2020-10-26 23:59:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:25,841 INFO L93 Difference]: Finished difference Result 17286 states and 19696 transitions. [2020-10-26 23:59:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:59:25,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 746 [2020-10-26 23:59:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:25,896 INFO L225 Difference]: With dead ends: 17286 [2020-10-26 23:59:25,896 INFO L226 Difference]: Without dead ends: 10344 [2020-10-26 23:59:25,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10344 states. [2020-10-26 23:59:26,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10344 to 9656. [2020-10-26 23:59:26,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9656 states. [2020-10-26 23:59:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9656 states to 9656 states and 10725 transitions. [2020-10-26 23:59:26,164 INFO L78 Accepts]: Start accepts. Automaton has 9656 states and 10725 transitions. Word has length 746 [2020-10-26 23:59:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:26,165 INFO L481 AbstractCegarLoop]: Abstraction has 9656 states and 10725 transitions. [2020-10-26 23:59:26,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 9656 states and 10725 transitions. [2020-10-26 23:59:26,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2020-10-26 23:59:26,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:26,188 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:26,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:59:26,189 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:26,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:26,190 INFO L82 PathProgramCache]: Analyzing trace with hash 854525180, now seen corresponding path program 1 times [2020-10-26 23:59:26,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:26,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947161408] [2020-10-26 23:59:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:31,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:31,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:31,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 876 [2020-10-26 23:59:31,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:59:31,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:59:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:31,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:31,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:31,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:31,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:31,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:31,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:31,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:31,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:31,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:59:31,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:31,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:31,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:59:31,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:59:31,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:59:31,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:31,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:59:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-26 23:59:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:59:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:32,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:59:32,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:59:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:32,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:59:32,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:32,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-26 23:59:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:32,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:59:32,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 294 proven. 347 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2020-10-26 23:59:32,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947161408] [2020-10-26 23:59:32,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:32,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:32,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356988200] [2020-10-26 23:59:32,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:32,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:32,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:32,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:32,832 INFO L87 Difference]: Start difference. First operand 9656 states and 10725 transitions. Second operand 7 states. [2020-10-26 23:59:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:36,995 INFO L93 Difference]: Finished difference Result 21342 states and 23965 transitions. [2020-10-26 23:59:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:59:36,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 854 [2020-10-26 23:59:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:37,036 INFO L225 Difference]: With dead ends: 21342 [2020-10-26 23:59:37,036 INFO L226 Difference]: Without dead ends: 12031 [2020-10-26 23:59:37,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12031 states. [2020-10-26 23:59:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12031 to 12023. [2020-10-26 23:59:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12023 states. [2020-10-26 23:59:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12023 states to 12023 states and 13458 transitions. [2020-10-26 23:59:37,329 INFO L78 Accepts]: Start accepts. Automaton has 12023 states and 13458 transitions. Word has length 854 [2020-10-26 23:59:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:37,330 INFO L481 AbstractCegarLoop]: Abstraction has 12023 states and 13458 transitions. [2020-10-26 23:59:37,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 12023 states and 13458 transitions. [2020-10-26 23:59:37,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2020-10-26 23:59:37,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:37,367 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:37,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:59:37,368 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:37,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:37,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2072265161, now seen corresponding path program 1 times [2020-10-26 23:59:37,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:37,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070387025] [2020-10-26 23:59:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:42,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:42,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1238 [2020-10-26 23:59:42,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:59:42,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-26 23:59:42,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:59:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:59:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:59:42,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:42,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:42,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:42,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:59:42,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:59:42,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:59:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:59:44,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-26 23:59:44,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:59:44,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:59:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:59:44,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:59:44,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:59:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-26 23:59:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:44,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:59:44,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:44,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-26 23:59:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:59:44,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:59:44,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:59:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 961 [2020-10-26 23:59:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 23:59:44,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:59:44,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-26 23:59:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1032 [2020-10-26 23:59:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 23:59:44,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:59:44,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-26 23:59:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2546 backedges. 310 proven. 1308 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2020-10-26 23:59:46,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070387025] [2020-10-26 23:59:46,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:46,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:59:46,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072202131] [2020-10-26 23:59:46,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:59:46,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:46,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:59:46,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:59:46,937 INFO L87 Difference]: Start difference. First operand 12023 states and 13458 transitions. Second operand 9 states. [2020-10-26 23:59:52,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:52,790 INFO L93 Difference]: Finished difference Result 25747 states and 29082 transitions. [2020-10-26 23:59:52,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:59:52,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1214 [2020-10-26 23:59:52,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:52,833 INFO L225 Difference]: With dead ends: 25747 [2020-10-26 23:59:52,833 INFO L226 Difference]: Without dead ends: 14069 [2020-10-26 23:59:52,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-26 23:59:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14069 states. [2020-10-26 23:59:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14069 to 13726. [2020-10-26 23:59:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13726 states. [2020-10-26 23:59:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13726 states to 13726 states and 15521 transitions. [2020-10-26 23:59:53,171 INFO L78 Accepts]: Start accepts. Automaton has 13726 states and 15521 transitions. Word has length 1214 [2020-10-26 23:59:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:53,172 INFO L481 AbstractCegarLoop]: Abstraction has 13726 states and 15521 transitions. [2020-10-26 23:59:53,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:59:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 13726 states and 15521 transitions. [2020-10-26 23:59:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1249 [2020-10-26 23:59:53,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:53,212 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:53,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:59:53,213 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:53,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1541122154, now seen corresponding path program 1 times [2020-10-26 23:59:53,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:53,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309713054] [2020-10-26 23:59:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:53,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1274 [2020-10-26 23:59:58,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:59:58,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:59:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:59:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:58,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:58,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:58,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:58,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:59:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:59:58,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:59:58,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:58,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:59:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-26 23:59:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:59,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:59:59,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:59:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-26 23:59:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:59:59,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:59:59,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:59:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-26 23:59:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:59:59,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:59:59,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:59:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-26 23:59:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-26 23:59:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 23:59:59,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 23:59:59,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-26 23:59:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1066 [2020-10-26 23:59:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 23:59:59,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:59:59,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-26 23:59:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3131 backedges. 239 proven. 692 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2020-10-27 00:00:00,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309713054] [2020-10-27 00:00:00,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:00,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:00,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847585167] [2020-10-27 00:00:00,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:00,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:00,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:00,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:00,935 INFO L87 Difference]: Start difference. First operand 13726 states and 15521 transitions. Second operand 7 states. [2020-10-27 00:00:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:05,195 INFO L93 Difference]: Finished difference Result 29139 states and 32893 transitions. [2020-10-27 00:00:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:00:05,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1248 [2020-10-27 00:00:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:05,245 INFO L225 Difference]: With dead ends: 29139 [2020-10-27 00:00:05,246 INFO L226 Difference]: Without dead ends: 15758 [2020-10-27 00:00:05,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:00:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15758 states. [2020-10-27 00:00:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15758 to 14408. [2020-10-27 00:00:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14408 states. [2020-10-27 00:00:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14408 states to 14408 states and 16218 transitions. [2020-10-27 00:00:05,597 INFO L78 Accepts]: Start accepts. Automaton has 14408 states and 16218 transitions. Word has length 1248 [2020-10-27 00:00:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:05,598 INFO L481 AbstractCegarLoop]: Abstraction has 14408 states and 16218 transitions. [2020-10-27 00:00:05,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 14408 states and 16218 transitions. [2020-10-27 00:00:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2020-10-27 00:00:05,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:05,643 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:05,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:00:05,644 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:05,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:05,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1342479187, now seen corresponding path program 1 times [2020-10-27 00:00:05,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:05,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802518229] [2020-10-27 00:00:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:06,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:06,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:10,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:10,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1383 [2020-10-27 00:00:10,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:00:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 00:00:10,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:00:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:00:10,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:00:11,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:00:11,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:00:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:00:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:11,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:00:11,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:00:11,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:00:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:00:11,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:00:11,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:00:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 00:00:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:11,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:11,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-27 00:00:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:00:11,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:00:11,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:00:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-27 00:00:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:00:11,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:00:11,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:00:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:12,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1035 [2020-10-27 00:00:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:12,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:12,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:00:12,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:00:12,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:00:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:12,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1173 [2020-10-27 00:00:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:12,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:12,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 00:00:12,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:00:12,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 00:00:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:12,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4271 backedges. 368 proven. 665 refuted. 0 times theorem prover too weak. 3238 trivial. 0 not checked. [2020-10-27 00:00:13,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802518229] [2020-10-27 00:00:13,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:13,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:13,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313795251] [2020-10-27 00:00:13,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:13,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:13,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:13,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:13,709 INFO L87 Difference]: Start difference. First operand 14408 states and 16218 transitions. Second operand 7 states. [2020-10-27 00:00:18,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:18,546 INFO L93 Difference]: Finished difference Result 31529 states and 35557 transitions. [2020-10-27 00:00:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:00:18,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1355 [2020-10-27 00:00:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:18,593 INFO L225 Difference]: With dead ends: 31529 [2020-10-27 00:00:18,593 INFO L226 Difference]: Without dead ends: 17466 [2020-10-27 00:00:18,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:00:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17466 states. [2020-10-27 00:00:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17466 to 17127. [2020-10-27 00:00:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17127 states. [2020-10-27 00:00:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17127 states to 17127 states and 19207 transitions. [2020-10-27 00:00:18,943 INFO L78 Accepts]: Start accepts. Automaton has 17127 states and 19207 transitions. Word has length 1355 [2020-10-27 00:00:18,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:18,944 INFO L481 AbstractCegarLoop]: Abstraction has 17127 states and 19207 transitions. [2020-10-27 00:00:18,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 17127 states and 19207 transitions. [2020-10-27 00:00:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1373 [2020-10-27 00:00:18,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:18,988 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:18,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:00:18,988 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:18,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1830576635, now seen corresponding path program 1 times [2020-10-27 00:00:18,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:18,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387130557] [2020-10-27 00:00:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:19,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:24,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:24,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1398 [2020-10-27 00:00:24,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:00:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-27 00:00:24,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:00:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:00:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:24,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:24,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:24,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:24,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:24,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:00:24,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:24,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:24,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:24,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:24,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:24,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:24,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:00:24,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:00:24,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:24,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:00:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:24,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:00:24,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 00:00:24,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:00:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:00:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:24,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:24,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:24,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:24,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:24,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:00:24,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:00:24,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:25,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:00:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-27 00:00:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:25,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:25,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:25,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:00:25,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:00:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-27 00:00:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:25,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1058 [2020-10-27 00:00:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:25,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:25,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:25,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:00:25,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 00:00:25,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:00:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:25,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:00:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:25,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:25,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:00:25,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:00:25,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 338 proven. 432 refuted. 0 times theorem prover too weak. 2210 trivial. 0 not checked. [2020-10-27 00:00:26,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387130557] [2020-10-27 00:00:26,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:26,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:26,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934616506] [2020-10-27 00:00:26,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:26,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:26,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:26,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:26,806 INFO L87 Difference]: Start difference. First operand 17127 states and 19207 transitions. Second operand 7 states. [2020-10-27 00:00:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:31,992 INFO L93 Difference]: Finished difference Result 36270 states and 40858 transitions. [2020-10-27 00:00:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:00:31,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1372 [2020-10-27 00:00:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:32,046 INFO L225 Difference]: With dead ends: 36270 [2020-10-27 00:00:32,047 INFO L226 Difference]: Without dead ends: 19488 [2020-10-27 00:00:32,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:00:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19488 states. [2020-10-27 00:00:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19488 to 19149. [2020-10-27 00:00:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19149 states. [2020-10-27 00:00:32,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19149 states to 19149 states and 21158 transitions. [2020-10-27 00:00:32,460 INFO L78 Accepts]: Start accepts. Automaton has 19149 states and 21158 transitions. Word has length 1372 [2020-10-27 00:00:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:32,461 INFO L481 AbstractCegarLoop]: Abstraction has 19149 states and 21158 transitions. [2020-10-27 00:00:32,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 19149 states and 21158 transitions. [2020-10-27 00:00:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1419 [2020-10-27 00:00:32,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:32,503 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:32,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:00:32,503 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:32,504 INFO L82 PathProgramCache]: Analyzing trace with hash 634451526, now seen corresponding path program 1 times [2020-10-27 00:00:32,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:32,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767938833] [2020-10-27 00:00:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:33,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:37,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:37,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1446 [2020-10-27 00:00:37,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:00:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 00:00:37,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:00:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:00:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:38,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:38,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:38,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:38,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:00:38,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:38,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:38,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:38,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:00:38,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:00:38,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:38,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:38,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:00:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:38,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:38,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:00:38,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:38,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:38,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:00:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:38,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:00:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:38,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:38,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:00:38,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:38,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:00:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:38,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:00:38,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:00:38,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:00:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:00:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:38,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:00:38,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:38,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 00:00:38,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:00:38,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:38,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:00:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:38,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:38,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:38,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:00:38,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:00:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:38,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:39,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1104 [2020-10-27 00:00:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:39,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:00:39,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:39,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:00:39,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:00:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:00:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:39,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:00:39,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:00:39,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3490 backedges. 616 proven. 226 refuted. 0 times theorem prover too weak. 2648 trivial. 0 not checked. [2020-10-27 00:00:40,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767938833] [2020-10-27 00:00:40,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:40,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:40,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943785426] [2020-10-27 00:00:40,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:40,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:40,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:40,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:40,374 INFO L87 Difference]: Start difference. First operand 19149 states and 21158 transitions. Second operand 7 states. [2020-10-27 00:00:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:46,930 INFO L93 Difference]: Finished difference Result 41675 states and 46217 transitions. [2020-10-27 00:00:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:00:46,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1418 [2020-10-27 00:00:46,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:46,994 INFO L225 Difference]: With dead ends: 41675 [2020-10-27 00:00:46,994 INFO L226 Difference]: Without dead ends: 22871 [2020-10-27 00:00:47,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:00:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22871 states. [2020-10-27 00:00:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22871 to 22197. [2020-10-27 00:00:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22197 states. [2020-10-27 00:00:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22197 states to 22197 states and 24426 transitions. [2020-10-27 00:00:47,955 INFO L78 Accepts]: Start accepts. Automaton has 22197 states and 24426 transitions. Word has length 1418 [2020-10-27 00:00:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:47,956 INFO L481 AbstractCegarLoop]: Abstraction has 22197 states and 24426 transitions. [2020-10-27 00:00:47,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 22197 states and 24426 transitions. [2020-10-27 00:00:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2020-10-27 00:00:47,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:47,998 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:47,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:00:47,998 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:47,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:47,999 INFO L82 PathProgramCache]: Analyzing trace with hash 214086779, now seen corresponding path program 1 times [2020-10-27 00:00:47,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:47,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368077601] [2020-10-27 00:00:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:53,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:53,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1454 [2020-10-27 00:00:53,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:53,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-27 00:00:53,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:53,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:53,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:00:53,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:00:53,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:53,825 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:00:53,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:53,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:53,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:53,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:00:53,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:53,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:53,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:53,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:00:53,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:00:53,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:00:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:54,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:54,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:54,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:00:54,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:54,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:00:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:54,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:00:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:00:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:00:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:00:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:55,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:55,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:55,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-27 00:00:55,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:00:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:00:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:55,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:55,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:00:55,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:00:55,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:00:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:55,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:00:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:55,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:55,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:00:55,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:55,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:00:55,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 907 proven. 272 refuted. 0 times theorem prover too weak. 2115 trivial. 0 not checked. [2020-10-27 00:00:56,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368077601] [2020-10-27 00:00:56,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:56,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:56,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301435025] [2020-10-27 00:00:56,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:56,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:56,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:56,999 INFO L87 Difference]: Start difference. First operand 22197 states and 24426 transitions. Second operand 7 states. [2020-10-27 00:01:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:01,451 INFO L93 Difference]: Finished difference Result 44057 states and 48516 transitions. [2020-10-27 00:01:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:01,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1428 [2020-10-27 00:01:01,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:01,507 INFO L225 Difference]: With dead ends: 44057 [2020-10-27 00:01:01,507 INFO L226 Difference]: Without dead ends: 22205 [2020-10-27 00:01:01,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:01:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22205 states. [2020-10-27 00:01:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22205 to 21860. [2020-10-27 00:01:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21860 states. [2020-10-27 00:01:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21860 states to 21860 states and 24063 transitions. [2020-10-27 00:01:02,054 INFO L78 Accepts]: Start accepts. Automaton has 21860 states and 24063 transitions. Word has length 1428 [2020-10-27 00:01:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:02,055 INFO L481 AbstractCegarLoop]: Abstraction has 21860 states and 24063 transitions. [2020-10-27 00:01:02,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 21860 states and 24063 transitions. [2020-10-27 00:01:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1481 [2020-10-27 00:01:02,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:02,092 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:02,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:01:02,092 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:02,093 INFO L82 PathProgramCache]: Analyzing trace with hash 436636234, now seen corresponding path program 1 times [2020-10-27 00:01:02,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:02,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230235119] [2020-10-27 00:01:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1508 [2020-10-27 00:01:07,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:01:07,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 00:01:07,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-27 00:01:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 00:01:07,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:07,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:07,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:01:07,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:07,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:07,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:01:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:07,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:01:07,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:07,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:01:07,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:07,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:01:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:07,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:07,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:07,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:01:07,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:01:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:07,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:01:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:07,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:07,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:01:07,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:07,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:01:07,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 00:01:08,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2020-10-27 00:01:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-27 00:01:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:01:08,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:01:08,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:01:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1166 [2020-10-27 00:01:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:01:08,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:01:08,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:08,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:01:08,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:01:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:01:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:01:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 600 proven. 372 refuted. 0 times theorem prover too weak. 2900 trivial. 0 not checked. [2020-10-27 00:01:09,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230235119] [2020-10-27 00:01:09,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:09,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:09,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679932871] [2020-10-27 00:01:09,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:09,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:09,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:09,689 INFO L87 Difference]: Start difference. First operand 21860 states and 24063 transitions. Second operand 7 states. [2020-10-27 00:01:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:14,383 INFO L93 Difference]: Finished difference Result 43383 states and 47793 transitions. [2020-10-27 00:01:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:01:14,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1480 [2020-10-27 00:01:14,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:14,421 INFO L225 Difference]: With dead ends: 43383 [2020-10-27 00:01:14,421 INFO L226 Difference]: Without dead ends: 21868 [2020-10-27 00:01:14,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21868 states. [2020-10-27 00:01:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21868 to 21521. [2020-10-27 00:01:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21521 states. [2020-10-27 00:01:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21521 states to 21521 states and 22868 transitions. [2020-10-27 00:01:14,805 INFO L78 Accepts]: Start accepts. Automaton has 21521 states and 22868 transitions. Word has length 1480 [2020-10-27 00:01:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:14,805 INFO L481 AbstractCegarLoop]: Abstraction has 21521 states and 22868 transitions. [2020-10-27 00:01:14,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 21521 states and 22868 transitions. [2020-10-27 00:01:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1492 [2020-10-27 00:01:14,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:14,841 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:14,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 00:01:14,842 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:14,843 INFO L82 PathProgramCache]: Analyzing trace with hash 842758599, now seen corresponding path program 1 times [2020-10-27 00:01:14,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:14,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911582239] [2020-10-27 00:01:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1517 [2020-10-27 00:01:20,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:01:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 00:01:20,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 797 [2020-10-27 00:01:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:01:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:20,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:01:20,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:20,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:01:20,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:01:20,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:20,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:01:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:01:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:01:20,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:01:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-27 00:01:20,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:01:20,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-27 00:01:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:01:20,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:01:20,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:20,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 00:01:20,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-27 00:01:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:20,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:01:20,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:01:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 904 [2020-10-27 00:01:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:21,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:01:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:01:21,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:01:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1177 [2020-10-27 00:01:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:21,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:21,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:01:21,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:21,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:01:21,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:01:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:21,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:21,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:01:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3567 backedges. 544 proven. 226 refuted. 0 times theorem prover too weak. 2797 trivial. 0 not checked. [2020-10-27 00:01:22,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911582239] [2020-10-27 00:01:22,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:22,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:22,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682301935] [2020-10-27 00:01:22,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:22,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:22,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:22,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:22,547 INFO L87 Difference]: Start difference. First operand 21521 states and 22868 transitions. Second operand 7 states. [2020-10-27 00:01:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:27,827 INFO L93 Difference]: Finished difference Result 45076 states and 47858 transitions. [2020-10-27 00:01:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:01:27,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1491 [2020-10-27 00:01:27,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:27,865 INFO L225 Difference]: With dead ends: 45076 [2020-10-27 00:01:27,865 INFO L226 Difference]: Without dead ends: 23900 [2020-10-27 00:01:27,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23900 states. [2020-10-27 00:01:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23900 to 22540. [2020-10-27 00:01:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22540 states. [2020-10-27 00:01:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22540 states to 22540 states and 23935 transitions. [2020-10-27 00:01:28,192 INFO L78 Accepts]: Start accepts. Automaton has 22540 states and 23935 transitions. Word has length 1491 [2020-10-27 00:01:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:28,193 INFO L481 AbstractCegarLoop]: Abstraction has 22540 states and 23935 transitions. [2020-10-27 00:01:28,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand 22540 states and 23935 transitions. [2020-10-27 00:01:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2020-10-27 00:01:28,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:28,230 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:28,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 00:01:28,230 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:28,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2031444958, now seen corresponding path program 1 times [2020-10-27 00:01:28,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:28,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412154994] [2020-10-27 00:01:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking...