/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:32:33,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:32:33,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:32:33,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:32:33,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:32:33,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:32:33,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:32:33,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:32:33,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:32:33,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:32:33,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:32:33,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:32:33,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:32:33,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:32:33,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:32:33,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:32:33,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:32:33,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:32:33,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:32:33,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:32:33,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:32:33,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:32:33,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:32:33,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:32:33,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:32:33,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:32:33,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:32:33,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:32:33,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:32:33,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:32:33,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:32:33,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:32:33,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:32:33,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:32:33,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:32:33,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:32:33,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:32:33,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:32:33,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:32:33,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:32:33,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:32:33,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:32:34,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:32:34,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:32:34,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:32:34,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:32:34,033 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:32:34,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:32:34,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:32:34,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:32:34,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:32:34,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:32:34,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:32:34,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:32:34,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:32:34,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:32:34,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:32:34,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:32:34,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:32:34,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:32:34,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:32:34,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:32:34,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:32:34,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:32:34,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:32:34,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:32:34,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:32:34,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:32:34,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:32:34,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:32:34,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:32:34,038 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:32:34,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:32:34,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:32:34,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:32:34,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:32:34,398 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:32:34,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:32:34,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75634fb56/aa69003a9c154c32840f5814abc3db81/FLAG154f1abd9 [2020-10-14 09:32:35,082 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:32:35,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:32:35,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75634fb56/aa69003a9c154c32840f5814abc3db81/FLAG154f1abd9 [2020-10-14 09:32:35,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75634fb56/aa69003a9c154c32840f5814abc3db81 [2020-10-14 09:32:35,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:32:35,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:32:35,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:32:35,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:32:35,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:32:35,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:32:35" (1/1) ... [2020-10-14 09:32:35,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261564d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:35, skipping insertion in model container [2020-10-14 09:32:35,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:32:35" (1/1) ... [2020-10-14 09:32:35,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:32:35,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:32:36,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:32:36,239 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:32:36,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:32:36,778 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:32:36,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36 WrapperNode [2020-10-14 09:32:36,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:32:36,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:32:36,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:32:36,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:32:36,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (1/1) ... [2020-10-14 09:32:36,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (1/1) ... [2020-10-14 09:32:36,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (1/1) ... [2020-10-14 09:32:36,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (1/1) ... [2020-10-14 09:32:36,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (1/1) ... [2020-10-14 09:32:36,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (1/1) ... [2020-10-14 09:32:36,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (1/1) ... [2020-10-14 09:32:36,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:32:36,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:32:36,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:32:36,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:32:36,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:32:37,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:32:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:32:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:32:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:32:37,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:32:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:32:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:32:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:32:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:32:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:32:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:32:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:32:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:32:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:32:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:32:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:32:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:32:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:32:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:32:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:32:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:32:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:32:39,347 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:32:39,347 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:32:39,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:32:39 BoogieIcfgContainer [2020-10-14 09:32:39,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:32:39,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:32:39,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:32:39,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:32:39,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:32:35" (1/3) ... [2020-10-14 09:32:39,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5aeaed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:32:39, skipping insertion in model container [2020-10-14 09:32:39,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:36" (2/3) ... [2020-10-14 09:32:39,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5aeaed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:32:39, skipping insertion in model container [2020-10-14 09:32:39,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:32:39" (3/3) ... [2020-10-14 09:32:39,364 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:32:39,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:32:39,385 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:32:39,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:32:39,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:32:39,431 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:32:39,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:32:39,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:32:39,432 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:32:39,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:32:39,432 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:32:39,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:32:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states. [2020-10-14 09:32:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 09:32:39,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:39,489 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] [2020-10-14 09:32:39,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:39,496 INFO L82 PathProgramCache]: Analyzing trace with hash -331581758, now seen corresponding path program 1 times [2020-10-14 09:32:39,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:39,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324790520] [2020-10-14 09:32:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:45,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:45,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 09:32:45,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:32:45,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 09:32:45,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:45,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:32:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:32:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 09:32:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:32:46,365 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:32:46,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:46,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:46,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:46,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:46,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 09:32:46,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:46,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:46,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:46,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:46,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:32:46,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324790520] [2020-10-14 09:32:46,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:46,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:32:46,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417996232] [2020-10-14 09:32:46,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:32:46,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:46,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:32:46,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:32:46,629 INFO L87 Difference]: Start difference. First operand 652 states. Second operand 5 states. [2020-10-14 09:32:52,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:52,894 INFO L93 Difference]: Finished difference Result 1911 states and 3394 transitions. [2020-10-14 09:32:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:32:52,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-14 09:32:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:52,924 INFO L225 Difference]: With dead ends: 1911 [2020-10-14 09:32:52,924 INFO L226 Difference]: Without dead ends: 1264 [2020-10-14 09:32:52,933 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 [2020-10-14 09:32:52,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2020-10-14 09:32:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1262. [2020-10-14 09:32:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1262 states. [2020-10-14 09:32:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1973 transitions. [2020-10-14 09:32:53,160 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1973 transitions. Word has length 254 [2020-10-14 09:32:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:53,164 INFO L479 AbstractCegarLoop]: Abstraction has 1262 states and 1973 transitions. [2020-10-14 09:32:53,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:32:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1973 transitions. [2020-10-14 09:32:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 09:32:53,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:53,185 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] [2020-10-14 09:32:53,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:32:53,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:53,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1863116525, now seen corresponding path program 1 times [2020-10-14 09:32:53,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:53,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280961610] [2020-10-14 09:32:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:55,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:57,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:58,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:58,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 09:32:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:32:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-14 09:32:58,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:58,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:32:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:32:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:32:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:58,927 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:32:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:58,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:58,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:58,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:32:58,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:58,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:59,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:32:59,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280961610] [2020-10-14 09:32:59,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:59,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:32:59,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190827832] [2020-10-14 09:32:59,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:32:59,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:59,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:32:59,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:59,180 INFO L87 Difference]: Start difference. First operand 1262 states and 1973 transitions. Second operand 4 states. [2020-10-14 09:33:06,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:06,375 INFO L93 Difference]: Finished difference Result 3584 states and 5570 transitions. [2020-10-14 09:33:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:06,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2020-10-14 09:33:06,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:06,390 INFO L225 Difference]: With dead ends: 3584 [2020-10-14 09:33:06,390 INFO L226 Difference]: Without dead ends: 2462 [2020-10-14 09:33:06,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:06,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2020-10-14 09:33:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2460. [2020-10-14 09:33:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2460 states. [2020-10-14 09:33:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3826 transitions. [2020-10-14 09:33:06,516 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3826 transitions. Word has length 256 [2020-10-14 09:33:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:06,519 INFO L479 AbstractCegarLoop]: Abstraction has 2460 states and 3826 transitions. [2020-10-14 09:33:06,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3826 transitions. [2020-10-14 09:33:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 09:33:06,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:06,528 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] [2020-10-14 09:33:06,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:33:06,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1996738702, now seen corresponding path program 1 times [2020-10-14 09:33:06,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:06,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867980758] [2020-10-14 09:33:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:06,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:09,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:09,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:11,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:11,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 09:33:11,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:33:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:33:11,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:11,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:33:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:33:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:12,100 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:33:12,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:12,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:12,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:33:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:12,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:33:12,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867980758] [2020-10-14 09:33:12,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:12,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:12,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757301591] [2020-10-14 09:33:12,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:12,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:12,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:12,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:12,275 INFO L87 Difference]: Start difference. First operand 2460 states and 3826 transitions. Second operand 4 states. [2020-10-14 09:33:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:16,403 INFO L93 Difference]: Finished difference Result 7221 states and 11202 transitions. [2020-10-14 09:33:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:16,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2020-10-14 09:33:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:16,427 INFO L225 Difference]: With dead ends: 7221 [2020-10-14 09:33:16,428 INFO L226 Difference]: Without dead ends: 4788 [2020-10-14 09:33:16,434 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 [2020-10-14 09:33:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2020-10-14 09:33:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 2471. [2020-10-14 09:33:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2471 states. [2020-10-14 09:33:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3841 transitions. [2020-10-14 09:33:16,578 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3841 transitions. Word has length 256 [2020-10-14 09:33:16,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:16,579 INFO L479 AbstractCegarLoop]: Abstraction has 2471 states and 3841 transitions. [2020-10-14 09:33:16,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3841 transitions. [2020-10-14 09:33:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-14 09:33:16,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:16,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:33:16,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:33:16,596 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:16,596 INFO L82 PathProgramCache]: Analyzing trace with hash 324633377, now seen corresponding path program 1 times [2020-10-14 09:33:16,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:16,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476183057] [2020-10-14 09:33:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:17,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:19,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:21,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:21,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 09:33:21,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:33:21,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 09:33:21,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:21,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:33:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:33:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:22,219 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:33:22,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:22,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:22,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:22,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:33:22,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:22,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:33:22,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476183057] [2020-10-14 09:33:22,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:22,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:22,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939349414] [2020-10-14 09:33:22,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:22,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:22,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:22,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:22,333 INFO L87 Difference]: Start difference. First operand 2471 states and 3841 transitions. Second operand 4 states. [2020-10-14 09:33:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:29,258 INFO L93 Difference]: Finished difference Result 7318 states and 11369 transitions. [2020-10-14 09:33:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:29,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2020-10-14 09:33:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:29,283 INFO L225 Difference]: With dead ends: 7318 [2020-10-14 09:33:29,283 INFO L226 Difference]: Without dead ends: 4897 [2020-10-14 09:33:29,289 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 [2020-10-14 09:33:29,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4897 states. [2020-10-14 09:33:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4897 to 2487. [2020-10-14 09:33:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2020-10-14 09:33:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3860 transitions. [2020-10-14 09:33:29,420 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3860 transitions. Word has length 257 [2020-10-14 09:33:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:29,420 INFO L479 AbstractCegarLoop]: Abstraction has 2487 states and 3860 transitions. [2020-10-14 09:33:29,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3860 transitions. [2020-10-14 09:33:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 09:33:29,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:29,430 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] [2020-10-14 09:33:29,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:33:29,431 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:29,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:29,431 INFO L82 PathProgramCache]: Analyzing trace with hash -848858503, now seen corresponding path program 1 times [2020-10-14 09:33:29,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:29,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189561919] [2020-10-14 09:33:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:34,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:34,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 09:33:34,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:33:34,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:33:34,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:34,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 09:33:34,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 09:33:34,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:34,942 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:33:34,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:34,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:34,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:34,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:33:34,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:34,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:34,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:34,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:33:35,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189561919] [2020-10-14 09:33:35,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:35,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:35,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983265077] [2020-10-14 09:33:35,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:35,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:35,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:35,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:35,027 INFO L87 Difference]: Start difference. First operand 2487 states and 3860 transitions. Second operand 4 states. [2020-10-14 09:33:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:39,608 INFO L93 Difference]: Finished difference Result 5059 states and 7894 transitions. [2020-10-14 09:33:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:39,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2020-10-14 09:33:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:39,628 INFO L225 Difference]: With dead ends: 5059 [2020-10-14 09:33:39,628 INFO L226 Difference]: Without dead ends: 3365 [2020-10-14 09:33:39,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2020-10-14 09:33:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 2997. [2020-10-14 09:33:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2997 states. [2020-10-14 09:33:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 4700 transitions. [2020-10-14 09:33:39,786 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 4700 transitions. Word has length 258 [2020-10-14 09:33:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:39,788 INFO L479 AbstractCegarLoop]: Abstraction has 2997 states and 4700 transitions. [2020-10-14 09:33:39,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 4700 transitions. [2020-10-14 09:33:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 09:33:39,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:39,798 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] [2020-10-14 09:33:39,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:33:39,798 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:39,799 INFO L82 PathProgramCache]: Analyzing trace with hash -158689336, now seen corresponding path program 1 times [2020-10-14 09:33:39,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:39,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875712863] [2020-10-14 09:33:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:41,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:44,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:44,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 09:33:44,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:33:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:33:44,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:44,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:33:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 09:33:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:45,351 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:33:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:45,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:45,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:45,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:33:45,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:45,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:33:45,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875712863] [2020-10-14 09:33:45,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:45,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:45,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770721133] [2020-10-14 09:33:45,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:45,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:45,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:45,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:45,459 INFO L87 Difference]: Start difference. First operand 2997 states and 4700 transitions. Second operand 4 states. [2020-10-14 09:33:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:51,846 INFO L93 Difference]: Finished difference Result 8618 states and 13481 transitions. [2020-10-14 09:33:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:51,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2020-10-14 09:33:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:51,871 INFO L225 Difference]: With dead ends: 8618 [2020-10-14 09:33:51,871 INFO L226 Difference]: Without dead ends: 5818 [2020-10-14 09:33:51,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:51,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2020-10-14 09:33:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5816. [2020-10-14 09:33:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5816 states. [2020-10-14 09:33:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 9072 transitions. [2020-10-14 09:33:52,155 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 9072 transitions. Word has length 258 [2020-10-14 09:33:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:52,155 INFO L479 AbstractCegarLoop]: Abstraction has 5816 states and 9072 transitions. [2020-10-14 09:33:52,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 9072 transitions. [2020-10-14 09:33:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 09:33:52,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:52,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:33:52,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:33:52,168 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:52,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1232395173, now seen corresponding path program 1 times [2020-10-14 09:33:52,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:52,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489804689] [2020-10-14 09:33:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:53,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:54,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:57,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:57,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 09:33:57,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:33:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:33:57,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:57,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:33:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:33:57,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 09:33:57,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:57,805 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:33:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:57,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:57,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:57,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:33:57,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:57,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:57,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:57,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:57,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:33:57,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489804689] [2020-10-14 09:33:57,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:57,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:33:57,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272291429] [2020-10-14 09:33:57,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:33:57,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:57,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:33:57,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:33:57,917 INFO L87 Difference]: Start difference. First operand 5816 states and 9072 transitions. Second operand 5 states. [2020-10-14 09:34:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:03,855 INFO L93 Difference]: Finished difference Result 16733 states and 26013 transitions. [2020-10-14 09:34:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:03,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-14 09:34:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:03,902 INFO L225 Difference]: With dead ends: 16733 [2020-10-14 09:34:03,902 INFO L226 Difference]: Without dead ends: 11191 [2020-10-14 09:34:03,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:34:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11191 states. [2020-10-14 09:34:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11191 to 11189. [2020-10-14 09:34:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11189 states. [2020-10-14 09:34:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11189 states to 11189 states and 17315 transitions. [2020-10-14 09:34:04,511 INFO L78 Accepts]: Start accepts. Automaton has 11189 states and 17315 transitions. Word has length 258 [2020-10-14 09:34:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:04,511 INFO L479 AbstractCegarLoop]: Abstraction has 11189 states and 17315 transitions. [2020-10-14 09:34:04,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:34:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 11189 states and 17315 transitions. [2020-10-14 09:34:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 09:34:04,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:04,531 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] [2020-10-14 09:34:04,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:34:04,531 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:04,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1203422336, now seen corresponding path program 1 times [2020-10-14 09:34:04,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:04,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857630073] [2020-10-14 09:34:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:04,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:07,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:07,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:09,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:09,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 09:34:09,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:34:09,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:34:09,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:09,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:34:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 09:34:09,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:10,078 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:34:10,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:10,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:10,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:10,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:34:10,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:10,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:34:10,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857630073] [2020-10-14 09:34:10,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:10,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:10,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465137970] [2020-10-14 09:34:10,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:10,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:10,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:10,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:10,180 INFO L87 Difference]: Start difference. First operand 11189 states and 17315 transitions. Second operand 4 states. [2020-10-14 09:34:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:17,114 INFO L93 Difference]: Finished difference Result 32737 states and 50542 transitions. [2020-10-14 09:34:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:34:17,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 260 [2020-10-14 09:34:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:17,162 INFO L225 Difference]: With dead ends: 32737 [2020-10-14 09:34:17,162 INFO L226 Difference]: Without dead ends: 21963 [2020-10-14 09:34:17,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21963 states. [2020-10-14 09:34:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21963 to 21961. [2020-10-14 09:34:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21961 states. [2020-10-14 09:34:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21961 states to 21961 states and 33774 transitions. [2020-10-14 09:34:18,905 INFO L78 Accepts]: Start accepts. Automaton has 21961 states and 33774 transitions. Word has length 260 [2020-10-14 09:34:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:18,906 INFO L479 AbstractCegarLoop]: Abstraction has 21961 states and 33774 transitions. [2020-10-14 09:34:18,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 21961 states and 33774 transitions. [2020-10-14 09:34:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 09:34:18,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:18,934 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] [2020-10-14 09:34:18,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:34:18,935 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:18,935 INFO L82 PathProgramCache]: Analyzing trace with hash 81879747, now seen corresponding path program 1 times [2020-10-14 09:34:18,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:18,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710639893] [2020-10-14 09:34:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:24,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:24,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 09:34:24,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:34:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 09:34:24,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:24,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:34:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:34:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 09:34:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:24,623 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:34:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:24,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:24,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:24,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:34:24,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:24,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:24,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:24,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:34:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:34:24,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710639893] [2020-10-14 09:34:24,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:24,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:34:24,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577895194] [2020-10-14 09:34:24,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:34:24,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:24,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:34:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:34:24,793 INFO L87 Difference]: Start difference. First operand 21961 states and 33774 transitions. Second operand 5 states. [2020-10-14 09:34:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:32,614 INFO L93 Difference]: Finished difference Result 63368 states and 97147 transitions. [2020-10-14 09:34:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:32,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-14 09:34:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:32,699 INFO L225 Difference]: With dead ends: 63368 [2020-10-14 09:34:32,700 INFO L226 Difference]: Without dead ends: 41870 [2020-10-14 09:34:32,748 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 [2020-10-14 09:34:32,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41870 states. [2020-10-14 09:34:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41870 to 41868. [2020-10-14 09:34:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41868 states. [2020-10-14 09:34:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41868 states to 41868 states and 63769 transitions. [2020-10-14 09:34:34,774 INFO L78 Accepts]: Start accepts. Automaton has 41868 states and 63769 transitions. Word has length 260 [2020-10-14 09:34:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:34,774 INFO L479 AbstractCegarLoop]: Abstraction has 41868 states and 63769 transitions. [2020-10-14 09:34:34,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:34:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 41868 states and 63769 transitions. [2020-10-14 09:34:34,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 09:34:34,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:34,813 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] [2020-10-14 09:34:34,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:34:34,814 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:34,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:34,814 INFO L82 PathProgramCache]: Analyzing trace with hash 595780050, now seen corresponding path program 1 times [2020-10-14 09:34:34,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:34,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330923922] [2020-10-14 09:34:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:35,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:35,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:39,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 09:34:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:34:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:34:39,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:39,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:34:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:34:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 09:34:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:40,444 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:34:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:40,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:40,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:40,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:34:40,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:40,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:34:40,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330923922] [2020-10-14 09:34:40,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:40,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:34:40,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877397915] [2020-10-14 09:34:40,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:34:40,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:40,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:34:40,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:34:40,554 INFO L87 Difference]: Start difference. First operand 41868 states and 63769 transitions. Second operand 5 states. [2020-10-14 09:34:50,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:50,911 INFO L93 Difference]: Finished difference Result 122468 states and 185956 transitions. [2020-10-14 09:34:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:50,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-14 09:34:50,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:51,030 INFO L225 Difference]: With dead ends: 122468 [2020-10-14 09:34:51,030 INFO L226 Difference]: Without dead ends: 81498 [2020-10-14 09:34:51,083 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 [2020-10-14 09:34:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81498 states. [2020-10-14 09:34:54,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81498 to 81496. [2020-10-14 09:34:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81496 states. [2020-10-14 09:34:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81496 states to 81496 states and 122998 transitions. [2020-10-14 09:34:54,602 INFO L78 Accepts]: Start accepts. Automaton has 81496 states and 122998 transitions. Word has length 260 [2020-10-14 09:34:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:54,603 INFO L479 AbstractCegarLoop]: Abstraction has 81496 states and 122998 transitions. [2020-10-14 09:34:54,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:34:54,603 INFO L276 IsEmpty]: Start isEmpty. Operand 81496 states and 122998 transitions. [2020-10-14 09:34:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 09:34:54,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:54,657 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] [2020-10-14 09:34:54,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:34:54,657 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:54,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1818728421, now seen corresponding path program 1 times [2020-10-14 09:34:54,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:54,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260133456] [2020-10-14 09:34:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:54,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:54,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:55,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:55,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:58,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:59,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 09:34:59,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:34:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:34:59,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:59,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:34:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 09:34:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:00,434 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:35:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:00,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:00,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:00,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:00,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:35:00,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:00,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:00,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:00,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:00,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:00,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:35:00,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260133456] [2020-10-14 09:35:00,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:00,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:00,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728291927] [2020-10-14 09:35:00,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:00,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:00,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:00,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:00,541 INFO L87 Difference]: Start difference. First operand 81496 states and 122998 transitions. Second operand 4 states. [2020-10-14 09:35:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:35:13,479 INFO L93 Difference]: Finished difference Result 237212 states and 356792 transitions. [2020-10-14 09:35:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:35:13,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 262 [2020-10-14 09:35:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:35:13,700 INFO L225 Difference]: With dead ends: 237212 [2020-10-14 09:35:13,700 INFO L226 Difference]: Without dead ends: 158642 [2020-10-14 09:35:13,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158642 states. [2020-10-14 09:35:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158642 to 158640. [2020-10-14 09:35:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158640 states. [2020-10-14 09:35:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158640 states to 158640 states and 237518 transitions. [2020-10-14 09:35:23,644 INFO L78 Accepts]: Start accepts. Automaton has 158640 states and 237518 transitions. Word has length 262 [2020-10-14 09:35:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:23,645 INFO L479 AbstractCegarLoop]: Abstraction has 158640 states and 237518 transitions. [2020-10-14 09:35:23,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:35:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 158640 states and 237518 transitions. [2020-10-14 09:35:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 09:35:23,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:23,759 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] [2020-10-14 09:35:23,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:35:23,760 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:23,760 INFO L82 PathProgramCache]: Analyzing trace with hash -298153366, now seen corresponding path program 1 times [2020-10-14 09:35:23,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:23,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230534480] [2020-10-14 09:35:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:26,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:27,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:28,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:28,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 09:35:28,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:35:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 09:35:28,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:28,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:35:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:35:28,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:29,257 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:35:29,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:29,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:29,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:29,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:29,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:35:29,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:29,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:35:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:35:29,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230534480] [2020-10-14 09:35:29,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:29,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:29,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739315575] [2020-10-14 09:35:29,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:29,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:29,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:29,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:29,349 INFO L87 Difference]: Start difference. First operand 158640 states and 237518 transitions. Second operand 4 states. [2020-10-14 09:35:49,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:35:49,345 INFO L93 Difference]: Finished difference Result 464820 states and 694064 transitions. [2020-10-14 09:35:49,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:35:49,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 262 [2020-10-14 09:35:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:35:49,757 INFO L225 Difference]: With dead ends: 464820 [2020-10-14 09:35:49,757 INFO L226 Difference]: Without dead ends: 311442 [2020-10-14 09:35:49,904 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 [2020-10-14 09:35:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311442 states. [2020-10-14 09:36:02,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311442 to 159536. [2020-10-14 09:36:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159536 states. [2020-10-14 09:36:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159536 states to 159536 states and 238638 transitions. [2020-10-14 09:36:02,928 INFO L78 Accepts]: Start accepts. Automaton has 159536 states and 238638 transitions. Word has length 262 [2020-10-14 09:36:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:02,929 INFO L479 AbstractCegarLoop]: Abstraction has 159536 states and 238638 transitions. [2020-10-14 09:36:02,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 159536 states and 238638 transitions. [2020-10-14 09:36:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 09:36:03,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:03,020 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] [2020-10-14 09:36:03,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:36:03,020 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:03,021 INFO L82 PathProgramCache]: Analyzing trace with hash -164332401, now seen corresponding path program 1 times [2020-10-14 09:36:03,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:03,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358660903] [2020-10-14 09:36:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:08,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:08,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 09:36:08,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:36:08,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 09:36:08,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:08,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 09:36:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 09:36:08,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:08,526 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-14 09:36:08,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:08,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:08,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:08,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:36:08,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:08,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:08,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358660903] [2020-10-14 09:36:08,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:08,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:08,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404090648] [2020-10-14 09:36:08,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:08,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:08,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:08,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:08,617 INFO L87 Difference]: Start difference. First operand 159536 states and 238638 transitions. Second operand 4 states.