/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=DEEPEST --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/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:47:46,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:47:46,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:47:46,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:47:46,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:47:46,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:47:46,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:47:46,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:47:46,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:47:46,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:47:46,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:47:46,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:47:46,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:47:46,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:47:46,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:47:46,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:47:46,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:47:46,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:47:46,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:47:46,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:47:46,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:47:46,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:47:46,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:47:46,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:47:46,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:47:46,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:47:46,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:47:46,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:47:46,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:47:46,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:47:46,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:47:46,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:47:46,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:47:46,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:47:46,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:47:46,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:47:46,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:47:46,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:47:46,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:47:46,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:47:46,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:47:46,978 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 [2020-10-27 22:47:47,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:47:47,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:47:47,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:47:47,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:47:47,039 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:47:47,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:47:47,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:47:47,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:47:47,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:47:47,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:47:47,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:47:47,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:47:47,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:47:47,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:47:47,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:47:47,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:47:47,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:47:47,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:47:47,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:47:47,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:47:47,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:47:47,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:47:47,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:47:47,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:47:47,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:47:47,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:47:47,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:47:47,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:47:47,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:47:47,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:47:47,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:47:47,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:47:47,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:47:47,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:47:47,536 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:47:47,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 22:47:47,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c4a54b81/ae6cce2eff204c71847e1b7066c36f07/FLAG01ab84aea [2020-10-27 22:47:48,445 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:47:48,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 22:47:48,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c4a54b81/ae6cce2eff204c71847e1b7066c36f07/FLAG01ab84aea [2020-10-27 22:47:48,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c4a54b81/ae6cce2eff204c71847e1b7066c36f07 [2020-10-27 22:47:48,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:47:48,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:47:48,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:47:48,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:47:48,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:47:48,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:47:48" (1/1) ... [2020-10-27 22:47:48,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c75636b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:48, skipping insertion in model container [2020-10-27 22:47:48,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:47:48" (1/1) ... [2020-10-27 22:47:48,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:47:48,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:47:49,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:47:49,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:47:49,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:47:49,149 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:47:49,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49 WrapperNode [2020-10-27 22:47:49,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:47:49,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:47:49,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:47:49,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:47:49,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (1/1) ... [2020-10-27 22:47:49,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (1/1) ... [2020-10-27 22:47:49,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (1/1) ... [2020-10-27 22:47:49,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (1/1) ... [2020-10-27 22:47:49,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (1/1) ... [2020-10-27 22:47:49,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (1/1) ... [2020-10-27 22:47:49,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (1/1) ... [2020-10-27 22:47:49,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:47:49,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:47:49,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:47:49,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:47:49,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (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 [2020-10-27 22:47:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:47:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:47:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:47:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 22:47:49,378 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:47:49,378 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:47:49,378 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:47:49,378 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:47:49,378 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:47:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:47:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:47:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:47:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:47:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:47:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:47:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:47:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 22:47:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:47:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:47:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 22:47:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:47:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:47:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:47:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:47:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:47:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:47:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:47:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:47:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:47:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:47:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:47:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:47:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:47:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:47:50,554 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:47:50,554 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:47:50,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:47:50 BoogieIcfgContainer [2020-10-27 22:47:50,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:47:50,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:47:50,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:47:50,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:47:50,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:47:48" (1/3) ... [2020-10-27 22:47:50,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d4d3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:47:50, skipping insertion in model container [2020-10-27 22:47:50,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:47:49" (2/3) ... [2020-10-27 22:47:50,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d4d3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:47:50, skipping insertion in model container [2020-10-27 22:47:50,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:47:50" (3/3) ... [2020-10-27 22:47:50,567 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 22:47:50,581 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:47:50,587 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:47:50,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:47:50,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:47:50,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:47:50,633 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:47:50,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:47:50,633 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:47:50,633 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:47:50,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:47:50,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:47:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-27 22:47:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 22:47:50,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:50,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:50,671 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:50,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:50,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2013799790, now seen corresponding path program 1 times [2020-10-27 22:47:50,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:50,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653150647] [2020-10-27 22:47:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:51,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:51,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:47:51,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-27 22:47:51,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:47:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:47:51,896 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:51,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:51,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:51,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:51,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:51,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 22:47:51,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:51,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:52,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:47:52,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 22:47:52,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 22:47:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:52,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:52,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:47:52,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:52,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 22:47:52,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:52,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:47:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:47:52,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:47:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:52,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:52,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:52,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:47:52,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:52,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:47:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:52,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:52,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:52,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:47:52,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:52,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 22:47:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:52,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:52,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:47:52,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:47:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:52,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:52,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:52,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:47:52,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:52,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:47:52,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653150647] [2020-10-27 22:47:52,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:52,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:47:52,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292647891] [2020-10-27 22:47:52,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:47:52,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:52,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:47:52,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:47:52,344 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 6 states. [2020-10-27 22:47:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:53,571 INFO L93 Difference]: Finished difference Result 262 states and 417 transitions. [2020-10-27 22:47:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:47:53,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-27 22:47:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:53,586 INFO L225 Difference]: With dead ends: 262 [2020-10-27 22:47:53,586 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 22:47:53,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:47:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 22:47:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2020-10-27 22:47:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 22:47:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 247 transitions. [2020-10-27 22:47:53,660 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 247 transitions. Word has length 63 [2020-10-27 22:47:53,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:53,661 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 247 transitions. [2020-10-27 22:47:53,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:47:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 247 transitions. [2020-10-27 22:47:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 22:47:53,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:53,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:53,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:47:53,665 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:53,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:53,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1886800720, now seen corresponding path program 1 times [2020-10-27 22:47:53,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:53,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356196911] [2020-10-27 22:47:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:53,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:54,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:54,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:47:54,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-27 22:47:54,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:47:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:47:54,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:54,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:54,795 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:54,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:54,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:54,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:54,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 22:47:54,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:54,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:54,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:54,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:47:54,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 22:47:54,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:47:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:54,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 22:47:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:47:55,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:47:55,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:47:55,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:47:55,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:55,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:47:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:55,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:47:55,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 22:47:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:47:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:55,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:55,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 22:47:55,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 22:47:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:55,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:55,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:47:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:55,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:55,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:55,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:47:55,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356196911] [2020-10-27 22:47:55,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:55,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:47:55,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640773084] [2020-10-27 22:47:55,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:47:55,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:55,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:47:55,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:47:55,242 INFO L87 Difference]: Start difference. First operand 154 states and 247 transitions. Second operand 12 states. [2020-10-27 22:47:55,886 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:56,170 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:47:56,546 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:56,797 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:58,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:58,319 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2020-10-27 22:47:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:47:58,319 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-27 22:47:58,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:58,326 INFO L225 Difference]: With dead ends: 257 [2020-10-27 22:47:58,326 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 22:47:58,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:47:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 22:47:58,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2020-10-27 22:47:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 22:47:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 220 transitions. [2020-10-27 22:47:58,389 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 220 transitions. Word has length 63 [2020-10-27 22:47:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:58,389 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 220 transitions. [2020-10-27 22:47:58,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:47:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 220 transitions. [2020-10-27 22:47:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 22:47:58,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:58,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:58,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:47:58,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash -454625351, now seen corresponding path program 1 times [2020-10-27 22:47:58,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:58,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477932493] [2020-10-27 22:47:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:59,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 22:48:03,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:48:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 22:48:03,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:48:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:48:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 22:48:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:03,744 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 22:48:03,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 22:48:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:48:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:48:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:03,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:03,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:48:03,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:03,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:48:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:48:04,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:48:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:04,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:04,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:48:04,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:04,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:48:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:04,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:04,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:04,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:04,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:48:04,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:04,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:48:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:04,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:04,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:04,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:48:04,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:48:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:04,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:04,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:04,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:04,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:48:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:04,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:48:04,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477932493] [2020-10-27 22:48:04,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:04,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:48:04,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211155128] [2020-10-27 22:48:04,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:48:04,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:04,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:48:04,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:48:04,345 INFO L87 Difference]: Start difference. First operand 154 states and 220 transitions. Second operand 13 states. [2020-10-27 22:48:04,606 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:05,152 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:05,371 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:07,097 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:07,341 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:48:07,584 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:08,140 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:11,707 INFO L93 Difference]: Finished difference Result 921 states and 1414 transitions. [2020-10-27 22:48:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 22:48:11,708 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-10-27 22:48:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:11,718 INFO L225 Difference]: With dead ends: 921 [2020-10-27 22:48:11,718 INFO L226 Difference]: Without dead ends: 836 [2020-10-27 22:48:11,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=652, Invalid=2318, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 22:48:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-27 22:48:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 719. [2020-10-27 22:48:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-27 22:48:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1109 transitions. [2020-10-27 22:48:11,894 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1109 transitions. Word has length 89 [2020-10-27 22:48:11,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:11,895 INFO L481 AbstractCegarLoop]: Abstraction has 719 states and 1109 transitions. [2020-10-27 22:48:11,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:48:11,895 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1109 transitions. [2020-10-27 22:48:11,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:48:11,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:11,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:11,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:48:11,907 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:11,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:11,908 INFO L82 PathProgramCache]: Analyzing trace with hash 397862609, now seen corresponding path program 1 times [2020-10-27 22:48:11,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:11,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530373224] [2020-10-27 22:48:11,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:11,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:16,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:16,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 22:48:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:48:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:48:16,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:48:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:48:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 22:48:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:48:17,246 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:17,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:17,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:17,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:17,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:48:17,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:17,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:17,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:17,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:17,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 22:48:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:48:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:17,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:48:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:17,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:48:17,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:17,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:17,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:48:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:48:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:17,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:17,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:48:17,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:17,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:17,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:48:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:17,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:17,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:17,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:48:17,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:17,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:48:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:17,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:17,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:17,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:48:17,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:17,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:17,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:17,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:17,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:17,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:48:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:17,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:17,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:48:17,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:48:17,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:48:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:48:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:48:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:48:17,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530373224] [2020-10-27 22:48:17,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:17,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:48:17,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48071522] [2020-10-27 22:48:17,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:48:17,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:17,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:48:17,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:48:17,722 INFO L87 Difference]: Start difference. First operand 719 states and 1109 transitions. Second operand 14 states. [2020-10-27 22:48:18,007 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:48:18,569 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:18,889 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:19,164 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:20,110 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:48:22,203 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 22:48:22,446 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:22,656 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:22,903 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:48:23,121 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:26,746 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:26,997 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:29,475 INFO L93 Difference]: Finished difference Result 3190 states and 5016 transitions. [2020-10-27 22:48:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-27 22:48:29,475 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-10-27 22:48:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:29,494 INFO L225 Difference]: With dead ends: 3190 [2020-10-27 22:48:29,494 INFO L226 Difference]: Without dead ends: 2540 [2020-10-27 22:48:29,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1125, Invalid=4727, Unknown=0, NotChecked=0, Total=5852 [2020-10-27 22:48:29,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2020-10-27 22:48:29,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2103. [2020-10-27 22:48:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2103 states. [2020-10-27 22:48:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3327 transitions. [2020-10-27 22:48:29,701 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3327 transitions. Word has length 90 [2020-10-27 22:48:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:29,702 INFO L481 AbstractCegarLoop]: Abstraction has 2103 states and 3327 transitions. [2020-10-27 22:48:29,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:48:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3327 transitions. [2020-10-27 22:48:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 22:48:29,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:29,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:29,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:48:29,705 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:29,705 INFO L82 PathProgramCache]: Analyzing trace with hash -547047454, now seen corresponding path program 1 times [2020-10-27 22:48:29,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:29,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133571239] [2020-10-27 22:48:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 22:48:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:48:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:48:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:48:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:48:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 22:48:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:34,990 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:35,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:35,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:35,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:48:35,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:35,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:35,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:35,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:35,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:35,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:35,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:35,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 22:48:35,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:48:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 22:48:35,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:48:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:35,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:35,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:35,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:48:35,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:35,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:35,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:35,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:35,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:35,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:48:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:48:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:35,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:35,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:35,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:35,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:48:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:35,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:35,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:35,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:35,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:48:35,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:48:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:35,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:35,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:35,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:35,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:48:35,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:35,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:48:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:35,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:35,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:35,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:35,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:35,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:35,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:48:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:35,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:48:35,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133571239] [2020-10-27 22:48:35,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:35,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:48:35,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531839090] [2020-10-27 22:48:35,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:48:35,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:35,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:48:35,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:48:35,282 INFO L87 Difference]: Start difference. First operand 2103 states and 3327 transitions. Second operand 10 states. [2020-10-27 22:48:35,530 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:36,062 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:37,711 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:37,906 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:40,891 INFO L93 Difference]: Finished difference Result 8004 states and 12651 transitions. [2020-10-27 22:48:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 22:48:40,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-27 22:48:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:40,940 INFO L225 Difference]: With dead ends: 8004 [2020-10-27 22:48:40,940 INFO L226 Difference]: Without dead ends: 5993 [2020-10-27 22:48:40,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:48:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2020-10-27 22:48:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 5179. [2020-10-27 22:48:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5179 states. [2020-10-27 22:48:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 8156 transitions. [2020-10-27 22:48:41,481 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 8156 transitions. Word has length 91 [2020-10-27 22:48:41,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:41,481 INFO L481 AbstractCegarLoop]: Abstraction has 5179 states and 8156 transitions. [2020-10-27 22:48:41,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:48:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 8156 transitions. [2020-10-27 22:48:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 22:48:41,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:41,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:41,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:48:41,491 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:41,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:41,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1376721382, now seen corresponding path program 1 times [2020-10-27 22:48:41,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:41,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113053539] [2020-10-27 22:48:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:41,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:46,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 22:48:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:48:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:48:46,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:48:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:48:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 22:48:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:46,770 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:46,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:46,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:46,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:48:46,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:46,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:46,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:46,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:46,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:46,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 22:48:46,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:46,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:48:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:48:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:46,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:48:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:46,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:46,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:48:46,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:46,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:46,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:48:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 34 [2020-10-27 22:48:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:48:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:46,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:46,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:46,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:46,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:46,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:48:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:46,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:46,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:48:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:47,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:47,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:47,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:47,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:48:47,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:47,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:48:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:47,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:47,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:48:47,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:47,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:47,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:48:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:47,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:48:47,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113053539] [2020-10-27 22:48:47,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:47,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:48:47,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903121897] [2020-10-27 22:48:47,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:48:47,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:47,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:48:47,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:48:47,090 INFO L87 Difference]: Start difference. First operand 5179 states and 8156 transitions. Second operand 10 states. [2020-10-27 22:48:47,317 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:47,867 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:49,018 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:49,258 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:52,580 INFO L93 Difference]: Finished difference Result 23775 states and 37301 transitions. [2020-10-27 22:48:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 22:48:52,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-27 22:48:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:52,722 INFO L225 Difference]: With dead ends: 23775 [2020-10-27 22:48:52,722 INFO L226 Difference]: Without dead ends: 18688 [2020-10-27 22:48:52,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:48:52,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18688 states. [2020-10-27 22:48:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18688 to 16123. [2020-10-27 22:48:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16123 states. [2020-10-27 22:48:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16123 states to 16123 states and 25265 transitions. [2020-10-27 22:48:54,117 INFO L78 Accepts]: Start accepts. Automaton has 16123 states and 25265 transitions. Word has length 92 [2020-10-27 22:48:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:54,119 INFO L481 AbstractCegarLoop]: Abstraction has 16123 states and 25265 transitions. [2020-10-27 22:48:54,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:48:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 16123 states and 25265 transitions. [2020-10-27 22:48:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 22:48:54,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:54,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:54,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:48:54,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:54,125 INFO L82 PathProgramCache]: Analyzing trace with hash -979390132, now seen corresponding path program 1 times [2020-10-27 22:48:54,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:54,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322792956] [2020-10-27 22:48:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:54,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:54,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:54,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:48:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:48:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:59,459 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:59,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:59,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:48:59,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:59,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:59,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:59,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:59,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:59,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 22:48:59,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:48:59,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:59,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:48:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:59,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:48:59,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:59,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:48:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:48:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:59,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:59,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:59,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:48:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:59,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:59,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:48:59,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:59,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:48:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:59,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:48:59,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:59,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:48:59,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:48:59,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:48:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:59,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:59,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:59,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:59,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:48:59,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322792956] [2020-10-27 22:48:59,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:59,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:48:59,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207880666] [2020-10-27 22:48:59,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:48:59,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:59,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:48:59,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:48:59,819 INFO L87 Difference]: Start difference. First operand 16123 states and 25265 transitions. Second operand 8 states. [2020-10-27 22:49:00,050 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:49:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:03,608 INFO L93 Difference]: Finished difference Result 48613 states and 76169 transitions. [2020-10-27 22:49:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:49:03,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-27 22:49:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:03,781 INFO L225 Difference]: With dead ends: 48613 [2020-10-27 22:49:03,781 INFO L226 Difference]: Without dead ends: 32582 [2020-10-27 22:49:03,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:49:03,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32582 states. [2020-10-27 22:49:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32582 to 28551. [2020-10-27 22:49:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28551 states. [2020-10-27 22:49:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28551 states to 28551 states and 44095 transitions. [2020-10-27 22:49:06,619 INFO L78 Accepts]: Start accepts. Automaton has 28551 states and 44095 transitions. Word has length 92 [2020-10-27 22:49:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:06,620 INFO L481 AbstractCegarLoop]: Abstraction has 28551 states and 44095 transitions. [2020-10-27 22:49:06,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:49:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 28551 states and 44095 transitions. [2020-10-27 22:49:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 22:49:06,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:06,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:06,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:49:06,624 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:06,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1069144991, now seen corresponding path program 1 times [2020-10-27 22:49:06,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:06,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137439601] [2020-10-27 22:49:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:07,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:11,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:11,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 22:49:11,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:49:11,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:49:11,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 22:49:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 22:49:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:11,929 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:11,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:49:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:11,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 22:49:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:49:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:12,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:49:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:12,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:12,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:49:12,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:12,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:12,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:49:12,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:12,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:49:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:12,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:12,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:12,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:49:12,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:12,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:49:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:12,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:12,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:49:12,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:49:12,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:49:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:49:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:49:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:12,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:12,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:12,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:12,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:49:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:12,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:12,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:12,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:12,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:12,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:49:12,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137439601] [2020-10-27 22:49:12,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:12,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:49:12,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953212051] [2020-10-27 22:49:12,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:49:12,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:12,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:49:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:49:12,238 INFO L87 Difference]: Start difference. First operand 28551 states and 44095 transitions. Second operand 8 states. [2020-10-27 22:49:12,494 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:49:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:16,929 INFO L93 Difference]: Finished difference Result 84623 states and 130717 transitions. [2020-10-27 22:49:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:49:16,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-27 22:49:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:17,211 INFO L225 Difference]: With dead ends: 84623 [2020-10-27 22:49:17,212 INFO L226 Difference]: Without dead ends: 56164 [2020-10-27 22:49:17,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:49:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56164 states. [2020-10-27 22:49:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56164 to 49845. [2020-10-27 22:49:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49845 states. [2020-10-27 22:49:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49845 states to 49845 states and 75573 transitions. [2020-10-27 22:49:20,857 INFO L78 Accepts]: Start accepts. Automaton has 49845 states and 75573 transitions. Word has length 92 [2020-10-27 22:49:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:20,857 INFO L481 AbstractCegarLoop]: Abstraction has 49845 states and 75573 transitions. [2020-10-27 22:49:20,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:49:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 49845 states and 75573 transitions. [2020-10-27 22:49:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 22:49:20,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:20,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:20,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:49:20,861 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:20,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:20,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1791663760, now seen corresponding path program 1 times [2020-10-27 22:49:20,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:20,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771404876] [2020-10-27 22:49:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:25,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:25,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 22:49:25,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:49:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:49:25,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 22:49:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:49:25,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:26,152 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:26,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:26,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:49:26,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:26,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:26,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:26,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:49:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 22:49:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:49:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:26,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:49:26,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:49:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:49:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:49:26,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:26,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:49:26,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:49:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:49:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:26,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:49:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:26,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:26,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:26,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:26,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:49:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:26,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:26,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:26,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:26,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:49:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:26,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:49:26,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:49:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:49:26,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771404876] [2020-10-27 22:49:26,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:26,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:49:26,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195698774] [2020-10-27 22:49:26,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:49:26,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:26,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:49:26,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:49:26,402 INFO L87 Difference]: Start difference. First operand 49845 states and 75573 transitions. Second operand 8 states. [2020-10-27 22:49:26,654 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:49:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:33,193 INFO L93 Difference]: Finished difference Result 142867 states and 216706 transitions. [2020-10-27 22:49:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:49:33,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-10-27 22:49:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:34,105 INFO L225 Difference]: With dead ends: 142867 [2020-10-27 22:49:34,105 INFO L226 Difference]: Without dead ends: 93102 [2020-10-27 22:49:34,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:49:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93102 states. [2020-10-27 22:49:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93102 to 83823. [2020-10-27 22:49:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83823 states. [2020-10-27 22:49:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83823 states to 83823 states and 124504 transitions. [2020-10-27 22:49:40,849 INFO L78 Accepts]: Start accepts. Automaton has 83823 states and 124504 transitions. Word has length 93 [2020-10-27 22:49:40,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:40,849 INFO L481 AbstractCegarLoop]: Abstraction has 83823 states and 124504 transitions. [2020-10-27 22:49:40,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:49:40,849 INFO L276 IsEmpty]: Start isEmpty. Operand 83823 states and 124504 transitions. [2020-10-27 22:49:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 22:49:40,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:40,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:40,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:49:40,851 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:40,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1002096062, now seen corresponding path program 1 times [2020-10-27 22:49:40,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:40,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062779939] [2020-10-27 22:49:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:45,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 22:49:45,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:49:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 22:49:45,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 22:49:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:49:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:46,118 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:46,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:46,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:49:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:46,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:46,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:49:46,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:49:46,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:46,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:49:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:46,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:46,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:49:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:49:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:46,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:49:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:46,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:46,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:49:46,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:49:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:46,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:46,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:49:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:46,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:46,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:46,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:49:46,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:49:46,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:49:46,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:49:46,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062779939] [2020-10-27 22:49:46,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:46,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:49:46,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770121302] [2020-10-27 22:49:46,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:49:46,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:46,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:49:46,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:49:46,327 INFO L87 Difference]: Start difference. First operand 83823 states and 124504 transitions. Second operand 8 states. [2020-10-27 22:49:46,587 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:49:48,130 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:49:59,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:59,184 INFO L93 Difference]: Finished difference Result 240425 states and 359439 transitions. [2020-10-27 22:49:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:49:59,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-10-27 22:49:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:00,168 INFO L225 Difference]: With dead ends: 240425 [2020-10-27 22:50:00,168 INFO L226 Difference]: Without dead ends: 156681 [2020-10-27 22:50:00,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:50:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156681 states. [2020-10-27 22:50:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156681 to 142647. [2020-10-27 22:50:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142647 states. [2020-10-27 22:50:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142647 states to 142647 states and 207089 transitions. [2020-10-27 22:50:11,859 INFO L78 Accepts]: Start accepts. Automaton has 142647 states and 207089 transitions. Word has length 94 [2020-10-27 22:50:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:11,859 INFO L481 AbstractCegarLoop]: Abstraction has 142647 states and 207089 transitions. [2020-10-27 22:50:11,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:50:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand 142647 states and 207089 transitions. [2020-10-27 22:50:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 22:50:11,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:11,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:50:11,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:50:11,861 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:11,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:11,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1338518769, now seen corresponding path program 1 times [2020-10-27 22:50:11,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:11,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221200212] [2020-10-27 22:50:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:11,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:13,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:16,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:16,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 22:50:16,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:50:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:50:16,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:50:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:50:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 22:50:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:17,148 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:50:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:17,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:17,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:50:17,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:17,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:17,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:50:17,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 22:50:17,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:50:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:50:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:17,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:17,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:17,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:50:17,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:50:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:17,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:17,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:50:17,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:17,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:50:17,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:50:17,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:50:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:17,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:17,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:17,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:50:17,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:17,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:17,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:17,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:17,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 22:50:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:17,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:17,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:17,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:17,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:50:17,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:17,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:17,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 22:50:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:17,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:17,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:50:17,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:50:17,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:50:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:50:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:50:17,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221200212] [2020-10-27 22:50:17,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:17,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:50:17,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752743660] [2020-10-27 22:50:17,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:50:17,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:17,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:50:17,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:50:17,488 INFO L87 Difference]: Start difference. First operand 142647 states and 207089 transitions. Second operand 13 states. [2020-10-27 22:50:17,783 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:50:18,337 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:50:18,568 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:50:19,766 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:50:20,663 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 22:50:21,780 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 22:50:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:37,939 INFO L93 Difference]: Finished difference Result 366128 states and 534083 transitions. [2020-10-27 22:50:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:50:37,940 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-10-27 22:50:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:39,362 INFO L225 Difference]: With dead ends: 366128 [2020-10-27 22:50:39,362 INFO L226 Difference]: Without dead ends: 223563 [2020-10-27 22:50:40,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=520, Invalid=1736, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 22:50:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223563 states. [2020-10-27 22:50:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223563 to 201180. [2020-10-27 22:50:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201180 states. [2020-10-27 22:50:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201180 states to 201180 states and 292772 transitions. [2020-10-27 22:50:55,165 INFO L78 Accepts]: Start accepts. Automaton has 201180 states and 292772 transitions. Word has length 96 [2020-10-27 22:50:55,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:55,165 INFO L481 AbstractCegarLoop]: Abstraction has 201180 states and 292772 transitions. [2020-10-27 22:50:55,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:50:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 201180 states and 292772 transitions. [2020-10-27 22:50:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 22:50:55,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:55,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:55,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:50:55,167 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2073792688, now seen corresponding path program 1 times [2020-10-27 22:50:55,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:55,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101725994] [2020-10-27 22:50:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 22:51:00,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:51:00,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 22:51:00,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:51:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 22:51:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 22:51:00,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,449 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:51:00,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:00,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:51:00,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:51:00,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:51:00,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:51:00,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:51:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:00,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:00,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:51:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:51:00,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:51:00,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:51:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:51:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:00,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:51:00,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:51:00,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 22:51:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:00,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:51:00,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:51:00,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 22:51:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:51:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:51:00,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101725994] [2020-10-27 22:51:00,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:00,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:51:00,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671974283] [2020-10-27 22:51:00,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:51:00,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:00,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:51:00,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:51:00,763 INFO L87 Difference]: Start difference. First operand 201180 states and 292772 transitions. Second operand 13 states. [2020-10-27 22:51:01,061 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:51:01,620 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:51:01,855 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 179