/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:06:59,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:06:59,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:06:59,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:06:59,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:06:59,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:06:59,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:06:59,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:06:59,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:06:59,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:06:59,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:06:59,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:06:59,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:06:59,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:06:59,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:06:59,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:06:59,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:06:59,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:06:59,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:06:59,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:06:59,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:06:59,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:06:59,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:06:59,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:06:59,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:06:59,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:06:59,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:06:59,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:06:59,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:06:59,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:06:59,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:06:59,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:06:59,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:06:59,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:06:59,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:06:59,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:06:59,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:06:59,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:06:59,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:06:59,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:06:59,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:06:59,966 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 [2020-10-15 03:06:59,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:06:59,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:06:59,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:06:59,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:06:59,991 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:06:59,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:06:59,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:06:59,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:06:59,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:06:59,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:07:00,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:07:00,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:07:00,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:07:00,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:07:00,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:07:00,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:07:00,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:07:00,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:07:00,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:07:00,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:07:00,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:07:00,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:07:00,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:07:00,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:07:00,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:07:00,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:07:00,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:07:00,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:07:00,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:07:00,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:07:00,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:07:00,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:07:00,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:07:00,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:07:00,442 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:07:00,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:07:00,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6983860b3/7b512041fb834aa5883510e21c1f7134/FLAG6a5eea795 [2020-10-15 03:07:01,159 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:07:01,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:07:01,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6983860b3/7b512041fb834aa5883510e21c1f7134/FLAG6a5eea795 [2020-10-15 03:07:01,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6983860b3/7b512041fb834aa5883510e21c1f7134 [2020-10-15 03:07:01,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:07:01,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:07:01,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:07:01,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:07:01,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:07:01,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:01" (1/1) ... [2020-10-15 03:07:01,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be6475b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:01, skipping insertion in model container [2020-10-15 03:07:01,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:01" (1/1) ... [2020-10-15 03:07:01,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:07:01,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:07:02,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:07:02,637 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:07:03,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:07:03,210 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:07:03,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03 WrapperNode [2020-10-15 03:07:03,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:07:03,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:07:03,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:07:03,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:07:03,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ... [2020-10-15 03:07:03,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ... [2020-10-15 03:07:03,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ... [2020-10-15 03:07:03,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ... [2020-10-15 03:07:03,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ... [2020-10-15 03:07:03,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ... [2020-10-15 03:07:03,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ... [2020-10-15 03:07:03,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:07:03,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:07:03,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:07:03,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:07:03,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (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 [2020-10-15 03:07:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:07:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:07:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:07:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:07:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:07:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:07:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:07:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:07:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:07:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:07:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:07:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:07:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:07:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:07:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:07:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:07:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:07:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:07:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:07:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:07:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:07:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:07:06,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:07:06,702 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:07:06,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:06 BoogieIcfgContainer [2020-10-15 03:07:06,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:07:06,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:07:06,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:07:06,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:07:06,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:01" (1/3) ... [2020-10-15 03:07:06,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dcf0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:06, skipping insertion in model container [2020-10-15 03:07:06,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (2/3) ... [2020-10-15 03:07:06,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dcf0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:06, skipping insertion in model container [2020-10-15 03:07:06,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:06" (3/3) ... [2020-10-15 03:07:06,733 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:07:06,744 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:07:06,757 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:07:06,772 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:07:06,804 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:07:06,804 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:07:06,804 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:07:06,804 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:07:06,804 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:07:06,805 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:07:06,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:07:06,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:07:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states. [2020-10-15 03:07:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-15 03:07:06,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:06,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:06,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1814402913, now seen corresponding path program 1 times [2020-10-15 03:07:06,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:06,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52998916] [2020-10-15 03:07:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:12,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:12,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-15 03:07:12,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:07:12,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-15 03:07:12,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:12,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:07:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-15 03:07:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-15 03:07:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:07:13,619 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:07:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:13,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:13,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:13,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:07:13,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:13,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:13,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52998916] [2020-10-15 03:07:13,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:13,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:07:13,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455295931] [2020-10-15 03:07:13,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:07:13,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:13,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:07:13,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:07:13,905 INFO L87 Difference]: Start difference. First operand 721 states. Second operand 4 states. [2020-10-15 03:07:14,638 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-15 03:07:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:20,196 INFO L93 Difference]: Finished difference Result 1287 states and 2268 transitions. [2020-10-15 03:07:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:20,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 310 [2020-10-15 03:07:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:20,227 INFO L225 Difference]: With dead ends: 1287 [2020-10-15 03:07:20,227 INFO L226 Difference]: Without dead ends: 1126 [2020-10-15 03:07:20,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-10-15 03:07:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1124. [2020-10-15 03:07:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1124 states. [2020-10-15 03:07:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1735 transitions. [2020-10-15 03:07:20,435 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1735 transitions. Word has length 310 [2020-10-15 03:07:20,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:20,440 INFO L479 AbstractCegarLoop]: Abstraction has 1124 states and 1735 transitions. [2020-10-15 03:07:20,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:07:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1735 transitions. [2020-10-15 03:07:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-15 03:07:20,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:20,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:20,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:07:20,454 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:20,454 INFO L82 PathProgramCache]: Analyzing trace with hash 668939043, now seen corresponding path program 1 times [2020-10-15 03:07:20,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:20,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759932648] [2020-10-15 03:07:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:23,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:23,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:25,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:25,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-15 03:07:25,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:07:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-15 03:07:25,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:25,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-15 03:07:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:26,747 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:07:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:26,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:26,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:26,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 03:07:26,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:26,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:27,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759932648] [2020-10-15 03:07:27,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:27,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:27,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436770285] [2020-10-15 03:07:27,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:27,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:27,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:27,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:27,228 INFO L87 Difference]: Start difference. First operand 1124 states and 1735 transitions. Second operand 5 states. [2020-10-15 03:07:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:36,040 INFO L93 Difference]: Finished difference Result 3318 states and 5120 transitions. [2020-10-15 03:07:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:36,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-15 03:07:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:36,058 INFO L225 Difference]: With dead ends: 3318 [2020-10-15 03:07:36,059 INFO L226 Difference]: Without dead ends: 2207 [2020-10-15 03:07:36,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2020-10-15 03:07:36,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2205. [2020-10-15 03:07:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-10-15 03:07:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3385 transitions. [2020-10-15 03:07:36,209 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3385 transitions. Word has length 310 [2020-10-15 03:07:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:36,209 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 3385 transitions. [2020-10-15 03:07:36,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3385 transitions. [2020-10-15 03:07:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-15 03:07:36,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:36,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:36,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:07:36,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:36,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:36,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1413997331, now seen corresponding path program 1 times [2020-10-15 03:07:36,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:36,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432569592] [2020-10-15 03:07:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:41,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:41,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-15 03:07:41,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:07:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-15 03:07:41,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:41,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-15 03:07:41,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:07:42,096 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:07:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:42,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:42,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:42,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:42,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 03:07:42,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:42,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:42,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:42,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432569592] [2020-10-15 03:07:42,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:42,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:42,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838198669] [2020-10-15 03:07:42,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:42,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:42,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:42,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:42,388 INFO L87 Difference]: Start difference. First operand 2205 states and 3385 transitions. Second operand 5 states. [2020-10-15 03:07:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:51,416 INFO L93 Difference]: Finished difference Result 6520 states and 10003 transitions. [2020-10-15 03:07:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:51,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-15 03:07:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:51,477 INFO L225 Difference]: With dead ends: 6520 [2020-10-15 03:07:51,478 INFO L226 Difference]: Without dead ends: 4338 [2020-10-15 03:07:51,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4338 states. [2020-10-15 03:07:51,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4338 to 4336. [2020-10-15 03:07:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4336 states. [2020-10-15 03:07:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 6618 transitions. [2020-10-15 03:07:51,825 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 6618 transitions. Word has length 312 [2020-10-15 03:07:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:51,826 INFO L479 AbstractCegarLoop]: Abstraction has 4336 states and 6618 transitions. [2020-10-15 03:07:51,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 6618 transitions. [2020-10-15 03:07:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-15 03:07:51,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:51,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:51,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:07:51,842 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash -618012528, now seen corresponding path program 1 times [2020-10-15 03:07:51,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:51,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335759219] [2020-10-15 03:07:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:52,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:55,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:56,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 03:07:56,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:07:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-15 03:07:56,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:56,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-15 03:07:56,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:58,045 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:07:58,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:58,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:58,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:58,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:07:58,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:58,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 03:07:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:58,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335759219] [2020-10-15 03:07:58,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:58,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:58,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327699872] [2020-10-15 03:07:58,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:58,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:58,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:58,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:58,316 INFO L87 Difference]: Start difference. First operand 4336 states and 6618 transitions. Second operand 5 states. [2020-10-15 03:08:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:07,070 INFO L93 Difference]: Finished difference Result 12715 states and 19371 transitions. [2020-10-15 03:08:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:07,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-15 03:08:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:07,115 INFO L225 Difference]: With dead ends: 12715 [2020-10-15 03:08:07,115 INFO L226 Difference]: Without dead ends: 8473 [2020-10-15 03:08:07,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8473 states. [2020-10-15 03:08:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8473 to 8471. [2020-10-15 03:08:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8471 states. [2020-10-15 03:08:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8471 states to 8471 states and 12831 transitions. [2020-10-15 03:08:07,591 INFO L78 Accepts]: Start accepts. Automaton has 8471 states and 12831 transitions. Word has length 314 [2020-10-15 03:08:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:07,592 INFO L479 AbstractCegarLoop]: Abstraction has 8471 states and 12831 transitions. [2020-10-15 03:08:07,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states and 12831 transitions. [2020-10-15 03:08:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-15 03:08:07,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:07,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:07,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:08:07,618 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:07,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:07,618 INFO L82 PathProgramCache]: Analyzing trace with hash -459815129, now seen corresponding path program 1 times [2020-10-15 03:08:07,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:07,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468421724] [2020-10-15 03:08:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:10,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:12,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:12,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-15 03:08:12,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:08:12,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 03:08:12,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:12,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:12,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:12,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:12,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 03:08:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:13,303 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:08:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:13,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:13,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:13,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:08:13,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:13,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:13,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468421724] [2020-10-15 03:08:13,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:13,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:13,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411600084] [2020-10-15 03:08:13,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:13,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:13,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:13,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:13,542 INFO L87 Difference]: Start difference. First operand 8471 states and 12831 transitions. Second operand 5 states. [2020-10-15 03:08:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:22,204 INFO L93 Difference]: Finished difference Result 24777 states and 37425 transitions. [2020-10-15 03:08:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:22,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-15 03:08:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:22,259 INFO L225 Difference]: With dead ends: 24777 [2020-10-15 03:08:22,259 INFO L226 Difference]: Without dead ends: 16603 [2020-10-15 03:08:22,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:22,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16603 states. [2020-10-15 03:08:22,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16603 to 16601. [2020-10-15 03:08:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16601 states. [2020-10-15 03:08:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16601 states to 16601 states and 24957 transitions. [2020-10-15 03:08:22,907 INFO L78 Accepts]: Start accepts. Automaton has 16601 states and 24957 transitions. Word has length 316 [2020-10-15 03:08:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:22,907 INFO L479 AbstractCegarLoop]: Abstraction has 16601 states and 24957 transitions. [2020-10-15 03:08:22,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 16601 states and 24957 transitions. [2020-10-15 03:08:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-15 03:08:22,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:22,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:22,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:08:22,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:22,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1546555073, now seen corresponding path program 1 times [2020-10-15 03:08:22,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:22,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83319764] [2020-10-15 03:08:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:27,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:27,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-15 03:08:27,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:08:27,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:08:27,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:27,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-15 03:08:27,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:28,587 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:08:28,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:28,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:28,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:28,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:08:28,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:28,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:28,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:28,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:28,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:28,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:28,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83319764] [2020-10-15 03:08:28,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:28,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:28,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222619721] [2020-10-15 03:08:28,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:28,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:28,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:28,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:28,776 INFO L87 Difference]: Start difference. First operand 16601 states and 24957 transitions. Second operand 5 states. [2020-10-15 03:08:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:37,725 INFO L93 Difference]: Finished difference Result 48561 states and 72787 transitions. [2020-10-15 03:08:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:37,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-15 03:08:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:37,824 INFO L225 Difference]: With dead ends: 48561 [2020-10-15 03:08:37,824 INFO L226 Difference]: Without dead ends: 32407 [2020-10-15 03:08:37,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32407 states. [2020-10-15 03:08:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32407 to 32405. [2020-10-15 03:08:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32405 states. [2020-10-15 03:08:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32405 states to 32405 states and 48329 transitions. [2020-10-15 03:08:39,471 INFO L78 Accepts]: Start accepts. Automaton has 32405 states and 48329 transitions. Word has length 318 [2020-10-15 03:08:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:39,471 INFO L479 AbstractCegarLoop]: Abstraction has 32405 states and 48329 transitions. [2020-10-15 03:08:39,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 32405 states and 48329 transitions. [2020-10-15 03:08:39,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-15 03:08:39,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:39,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:39,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:08:39,517 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:39,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:39,517 INFO L82 PathProgramCache]: Analyzing trace with hash -832019861, now seen corresponding path program 1 times [2020-10-15 03:08:39,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:39,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288362940] [2020-10-15 03:08:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:39,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:39,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:40,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:44,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-15 03:08:44,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:08:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:08:44,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:44,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:08:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 03:08:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:08:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:45,138 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:08:45,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:45,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:45,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:08:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:45,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:45,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288362940] [2020-10-15 03:08:45,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:45,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:08:45,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343900682] [2020-10-15 03:08:45,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:08:45,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:45,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:08:45,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:08:45,276 INFO L87 Difference]: Start difference. First operand 32405 states and 48329 transitions. Second operand 4 states. [2020-10-15 03:08:55,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:55,956 INFO L93 Difference]: Finished difference Result 94069 states and 139703 transitions. [2020-10-15 03:08:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:08:55,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-10-15 03:08:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:56,074 INFO L225 Difference]: With dead ends: 94069 [2020-10-15 03:08:56,074 INFO L226 Difference]: Without dead ends: 63435 [2020-10-15 03:08:56,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:08:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63435 states. [2020-10-15 03:08:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63435 to 63433. [2020-10-15 03:08:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63433 states. [2020-10-15 03:08:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63433 states to 63433 states and 93901 transitions. [2020-10-15 03:08:59,187 INFO L78 Accepts]: Start accepts. Automaton has 63433 states and 93901 transitions. Word has length 320 [2020-10-15 03:08:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:59,188 INFO L479 AbstractCegarLoop]: Abstraction has 63433 states and 93901 transitions. [2020-10-15 03:08:59,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:08:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 63433 states and 93901 transitions. [2020-10-15 03:08:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-15 03:08:59,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:59,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:59,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:08:59,250 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:59,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:59,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2009618416, now seen corresponding path program 1 times [2020-10-15 03:08:59,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:59,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238141700] [2020-10-15 03:08:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:02,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:02,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:04,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:04,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-15 03:09:04,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:09:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:09:04,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:04,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:09:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:09:04,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 03:09:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:04,908 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:09:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:09:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:04,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:05,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238141700] [2020-10-15 03:09:05,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:05,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:09:05,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750650218] [2020-10-15 03:09:05,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:09:05,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:05,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:09:05,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:05,053 INFO L87 Difference]: Start difference. First operand 63433 states and 93901 transitions. Second operand 5 states. [2020-10-15 03:09:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:19,644 INFO L93 Difference]: Finished difference Result 186240 states and 274834 transitions. [2020-10-15 03:09:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:19,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-15 03:09:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:19,843 INFO L225 Difference]: With dead ends: 186240 [2020-10-15 03:09:19,843 INFO L226 Difference]: Without dead ends: 124086 [2020-10-15 03:09:19,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:09:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124086 states. [2020-10-15 03:09:27,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124086 to 124084. [2020-10-15 03:09:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124084 states. [2020-10-15 03:09:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124084 states to 124084 states and 182164 transitions. [2020-10-15 03:09:27,346 INFO L78 Accepts]: Start accepts. Automaton has 124084 states and 182164 transitions. Word has length 320 [2020-10-15 03:09:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:27,347 INFO L479 AbstractCegarLoop]: Abstraction has 124084 states and 182164 transitions. [2020-10-15 03:09:27,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:09:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 124084 states and 182164 transitions. [2020-10-15 03:09:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-15 03:09:27,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:27,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:09:27,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:09:27,487 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash 162485922, now seen corresponding path program 1 times [2020-10-15 03:09:27,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:27,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363117646] [2020-10-15 03:09:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:32,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:32,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-15 03:09:32,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:09:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 03:09:32,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:32,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:09:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:09:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-15 03:09:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:33,250 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:09:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:33,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:33,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:33,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:33,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:09:33,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:33,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:09:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:33,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363117646] [2020-10-15 03:09:33,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:33,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:09:33,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476475640] [2020-10-15 03:09:33,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:09:33,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:33,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:09:33,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:33,427 INFO L87 Difference]: Start difference. First operand 124084 states and 182164 transitions. Second operand 5 states. [2020-10-15 03:09:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:53,965 INFO L93 Difference]: Finished difference Result 364004 states and 532774 transitions. [2020-10-15 03:09:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:53,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-15 03:09:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:54,337 INFO L225 Difference]: With dead ends: 364004 [2020-10-15 03:09:54,338 INFO L226 Difference]: Without dead ends: 241698 [2020-10-15 03:09:54,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:09:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241698 states. [2020-10-15 03:10:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241698 to 241696. [2020-10-15 03:10:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241696 states. [2020-10-15 03:10:15,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241696 states to 241696 states and 351356 transitions. [2020-10-15 03:10:15,158 INFO L78 Accepts]: Start accepts. Automaton has 241696 states and 351356 transitions. Word has length 322 [2020-10-15 03:10:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:15,161 INFO L479 AbstractCegarLoop]: Abstraction has 241696 states and 351356 transitions. [2020-10-15 03:10:15,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:10:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 241696 states and 351356 transitions. [2020-10-15 03:10:15,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-15 03:10:15,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:15,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:10:15,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:10:15,392 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1500990331, now seen corresponding path program 1 times [2020-10-15 03:10:15,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:15,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452140832] [2020-10-15 03:10:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:15,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:20,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:20,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-15 03:10:20,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:10:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:10:20,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:20,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:10:20,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-15 03:10:20,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:21,223 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:10:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:21,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:21,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:21,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:21,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:10:21,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:21,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:10:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:10:24,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452140832] [2020-10-15 03:10:24,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:24,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:24,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543110535] [2020-10-15 03:10:24,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:24,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:24,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:24,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:24,119 INFO L87 Difference]: Start difference. First operand 241696 states and 351356 transitions. Second operand 5 states.