/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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:24:59,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:24:59,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:24:59,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:24:59,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:24:59,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:24:59,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:24:59,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:24:59,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:24:59,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:24:59,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:24:59,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:24:59,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:24:59,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:24:59,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:24:59,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:24:59,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:24:59,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:24:59,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:24:59,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:24:59,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:24:59,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:24:59,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:24:59,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:24:59,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:24:59,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:24:59,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:24:59,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:24:59,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:24:59,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:24:59,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:24:59,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:24:59,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:24:59,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:24:59,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:24:59,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:24:59,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:24:59,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:24:59,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:24:59,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:24:59,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:24:59,955 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 08:24:59,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:24:59,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:24:59,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:24:59,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:24:59,979 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:24:59,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:24:59,980 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:24:59,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:24:59,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:24:59,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:24:59,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:24:59,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:24:59,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:24:59,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:24:59,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:24:59,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:24:59,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:24:59,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:24:59,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:24:59,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:24:59,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:24:59,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:24:59,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:24:59,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:24:59,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:24:59,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:24:59,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:24:59,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:24:59,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:24:59,984 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 08:25:00,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:25:00,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:25:00,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:25:00,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:25:00,319 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:25:00,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:25:00,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42550f6a1/f62f561ee7044aa091b492e60c70a51b/FLAGb40caef50 [2020-10-14 08:25:00,980 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:25:00,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:25:00,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42550f6a1/f62f561ee7044aa091b492e60c70a51b/FLAGb40caef50 [2020-10-14 08:25:01,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42550f6a1/f62f561ee7044aa091b492e60c70a51b [2020-10-14 08:25:01,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:25:01,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:25:01,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:25:01,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:25:01,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:25:01,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:25:01" (1/1) ... [2020-10-14 08:25:01,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1be01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:01, skipping insertion in model container [2020-10-14 08:25:01,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:25:01" (1/1) ... [2020-10-14 08:25:01,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:25:01,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:25:01,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:25:01,980 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:25:02,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:25:02,546 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:25:02,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02 WrapperNode [2020-10-14 08:25:02,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:25:02,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:25:02,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:25:02,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:25:02,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:25:02,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:25:02,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:25:02,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:25:02,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (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 08:25:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:25:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:25:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:25:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:25:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:25:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:25:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:25:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:25:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:25:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:25:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:25:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:25:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:25:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:25:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:25:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:25:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:25:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:25:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:25:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:25:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:25:04,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:25:04,521 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:25:04,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:25:04 BoogieIcfgContainer [2020-10-14 08:25:04,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:25:04,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:25:04,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:25:04,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:25:04,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:25:01" (1/3) ... [2020-10-14 08:25:04,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8ac76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:25:04, skipping insertion in model container [2020-10-14 08:25:04,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02" (2/3) ... [2020-10-14 08:25:04,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8ac76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:25:04, skipping insertion in model container [2020-10-14 08:25:04,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:25:04" (3/3) ... [2020-10-14 08:25:04,539 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:25:04,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:25:04,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-14 08:25:04,574 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-14 08:25:04,601 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:25:04,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:25:04,602 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:25:04,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:25:04,602 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:25:04,602 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:25:04,602 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:25:04,602 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:25:04,632 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states. [2020-10-14 08:25:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 08:25:04,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:04,651 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] [2020-10-14 08:25:04,652 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:04,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1760839587, now seen corresponding path program 1 times [2020-10-14 08:25:04,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:04,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808696751] [2020-10-14 08:25:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:10,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:10,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 08:25:10,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:25:10,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 08:25:10,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:10,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:10,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 08:25:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 08:25:10,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 08:25:10,767 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:10,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:10,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:10,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:10,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:25:10,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:10,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:10,861 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 08:25:10,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808696751] [2020-10-14 08:25:10,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:10,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:10,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478338451] [2020-10-14 08:25:10,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:10,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:10,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:10,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:10,897 INFO L87 Difference]: Start difference. First operand 393 states. Second operand 4 states. [2020-10-14 08:25:11,234 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:25:13,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:13,802 INFO L93 Difference]: Finished difference Result 714 states and 1263 transitions. [2020-10-14 08:25:13,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:13,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-14 08:25:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:13,840 INFO L225 Difference]: With dead ends: 714 [2020-10-14 08:25:13,841 INFO L226 Difference]: Without dead ends: 559 [2020-10-14 08:25:13,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-14 08:25:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 557. [2020-10-14 08:25:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-10-14 08:25:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 812 transitions. [2020-10-14 08:25:13,958 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 812 transitions. Word has length 145 [2020-10-14 08:25:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:13,959 INFO L479 AbstractCegarLoop]: Abstraction has 557 states and 812 transitions. [2020-10-14 08:25:13,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 812 transitions. [2020-10-14 08:25:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 08:25:13,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:13,964 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] [2020-10-14 08:25:13,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:25:13,965 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash -221119843, now seen corresponding path program 1 times [2020-10-14 08:25:13,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:13,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364146467] [2020-10-14 08:25:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:16,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:18,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:19,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 08:25:19,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:25:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 08:25:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:19,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 08:25:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 08:25:19,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:19,442 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:19,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:19,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:19,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:25:19,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:19,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:19,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:25:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:19,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364146467] [2020-10-14 08:25:19,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:19,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:19,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735029465] [2020-10-14 08:25:19,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:19,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:19,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:19,545 INFO L87 Difference]: Start difference. First operand 557 states and 812 transitions. Second operand 4 states. [2020-10-14 08:25:19,801 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:25:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:21,809 INFO L93 Difference]: Finished difference Result 1114 states and 1681 transitions. [2020-10-14 08:25:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:21,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-14 08:25:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:21,818 INFO L225 Difference]: With dead ends: 1114 [2020-10-14 08:25:21,818 INFO L226 Difference]: Without dead ends: 897 [2020-10-14 08:25:21,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-10-14 08:25:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 895. [2020-10-14 08:25:21,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-10-14 08:25:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1328 transitions. [2020-10-14 08:25:21,863 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1328 transitions. Word has length 145 [2020-10-14 08:25:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:21,864 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1328 transitions. [2020-10-14 08:25:21,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1328 transitions. [2020-10-14 08:25:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 08:25:21,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:21,868 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] [2020-10-14 08:25:21,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:25:21,869 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:21,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1361470691, now seen corresponding path program 1 times [2020-10-14 08:25:21,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:21,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869978400] [2020-10-14 08:25:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:21,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:26,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 08:25:26,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:25:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:25:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:26,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 08:25:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:27,331 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:27,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:27,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:27,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:25:27,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:27,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:27,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:27,416 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 08:25:27,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869978400] [2020-10-14 08:25:27,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:27,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:27,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747727958] [2020-10-14 08:25:27,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:27,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:27,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:27,419 INFO L87 Difference]: Start difference. First operand 895 states and 1328 transitions. Second operand 5 states. [2020-10-14 08:25:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:30,316 INFO L93 Difference]: Finished difference Result 2615 states and 3875 transitions. [2020-10-14 08:25:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:30,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 08:25:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:30,326 INFO L225 Difference]: With dead ends: 2615 [2020-10-14 08:25:30,326 INFO L226 Difference]: Without dead ends: 1731 [2020-10-14 08:25:30,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:30,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2020-10-14 08:25:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1709. [2020-10-14 08:25:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-10-14 08:25:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2519 transitions. [2020-10-14 08:25:30,406 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2519 transitions. Word has length 145 [2020-10-14 08:25:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:30,407 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2519 transitions. [2020-10-14 08:25:30,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2519 transitions. [2020-10-14 08:25:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 08:25:30,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:30,411 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] [2020-10-14 08:25:30,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:25:30,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1206559804, now seen corresponding path program 1 times [2020-10-14 08:25:30,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:30,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138128959] [2020-10-14 08:25:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:30,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:35,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:35,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 08:25:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:25:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:25:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:35,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:25:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:25:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:35,740 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:35,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:35,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:35,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:35,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:25:35,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:35,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:35,795 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 08:25:35,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138128959] [2020-10-14 08:25:35,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:35,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:35,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628181589] [2020-10-14 08:25:35,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:35,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:35,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:35,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:35,799 INFO L87 Difference]: Start difference. First operand 1709 states and 2519 transitions. Second operand 4 states. [2020-10-14 08:25:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:39,278 INFO L93 Difference]: Finished difference Result 5092 states and 7507 transitions. [2020-10-14 08:25:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:25:39,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-14 08:25:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:39,298 INFO L225 Difference]: With dead ends: 5092 [2020-10-14 08:25:39,299 INFO L226 Difference]: Without dead ends: 3406 [2020-10-14 08:25:39,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2020-10-14 08:25:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 1712. [2020-10-14 08:25:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1712 states. [2020-10-14 08:25:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2523 transitions. [2020-10-14 08:25:39,424 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2523 transitions. Word has length 146 [2020-10-14 08:25:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:39,425 INFO L479 AbstractCegarLoop]: Abstraction has 1712 states and 2523 transitions. [2020-10-14 08:25:39,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2523 transitions. [2020-10-14 08:25:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 08:25:39,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:39,429 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] [2020-10-14 08:25:39,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:25:39,429 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:39,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2064054396, now seen corresponding path program 1 times [2020-10-14 08:25:39,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:39,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418778084] [2020-10-14 08:25:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:39,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:39,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:44,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:44,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 08:25:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:25:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:25:44,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:44,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 08:25:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:44,794 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:44,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:44,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:25:44,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:44,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:44,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:44,885 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 08:25:44,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418778084] [2020-10-14 08:25:44,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:44,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:44,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348659911] [2020-10-14 08:25:44,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:44,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:44,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:44,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:44,888 INFO L87 Difference]: Start difference. First operand 1712 states and 2523 transitions. Second operand 5 states. [2020-10-14 08:25:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:47,667 INFO L93 Difference]: Finished difference Result 4963 states and 7290 transitions. [2020-10-14 08:25:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:47,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-14 08:25:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:47,685 INFO L225 Difference]: With dead ends: 4963 [2020-10-14 08:25:47,686 INFO L226 Difference]: Without dead ends: 3295 [2020-10-14 08:25:47,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2020-10-14 08:25:47,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 3262. [2020-10-14 08:25:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2020-10-14 08:25:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4758 transitions. [2020-10-14 08:25:47,858 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4758 transitions. Word has length 147 [2020-10-14 08:25:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:47,859 INFO L479 AbstractCegarLoop]: Abstraction has 3262 states and 4758 transitions. [2020-10-14 08:25:47,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4758 transitions. [2020-10-14 08:25:47,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 08:25:47,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:47,865 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] [2020-10-14 08:25:47,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:25:47,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:47,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:47,866 INFO L82 PathProgramCache]: Analyzing trace with hash 788676025, now seen corresponding path program 1 times [2020-10-14 08:25:47,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:47,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119712796] [2020-10-14 08:25:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:48,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:48,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:48,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:52,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:52,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 08:25:52,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:25:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:25:52,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:52,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:25:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:25:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:53,111 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:53,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:53,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:53,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:53,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:25:53,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:53,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:53,159 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 08:25:53,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119712796] [2020-10-14 08:25:53,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:53,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:53,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259263945] [2020-10-14 08:25:53,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:53,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:53,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:53,161 INFO L87 Difference]: Start difference. First operand 3262 states and 4758 transitions. Second operand 4 states. [2020-10-14 08:25:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:56,048 INFO L93 Difference]: Finished difference Result 9538 states and 13931 transitions. [2020-10-14 08:25:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:25:56,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-14 08:25:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:56,079 INFO L225 Difference]: With dead ends: 9538 [2020-10-14 08:25:56,079 INFO L226 Difference]: Without dead ends: 6465 [2020-10-14 08:25:56,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2020-10-14 08:25:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 3268. [2020-10-14 08:25:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3268 states. [2020-10-14 08:25:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 4766 transitions. [2020-10-14 08:25:56,364 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 4766 transitions. Word has length 148 [2020-10-14 08:25:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:56,364 INFO L479 AbstractCegarLoop]: Abstraction has 3268 states and 4766 transitions. [2020-10-14 08:25:56,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 4766 transitions. [2020-10-14 08:25:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 08:25:56,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:56,370 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] [2020-10-14 08:25:56,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:25:56,371 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:56,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1444579483, now seen corresponding path program 1 times [2020-10-14 08:25:56,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:56,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259695308] [2020-10-14 08:25:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:00,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:00,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:01,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:01,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 08:26:01,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:26:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:26:01,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:01,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:26:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 08:26:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:01,784 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:01,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:01,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:01,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:01,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:26:01,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:01,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:01,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:01,866 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 08:26:01,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259695308] [2020-10-14 08:26:01,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:01,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:01,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010809796] [2020-10-14 08:26:01,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:01,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:01,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:01,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:01,869 INFO L87 Difference]: Start difference. First operand 3268 states and 4766 transitions. Second operand 5 states. [2020-10-14 08:26:05,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:05,322 INFO L93 Difference]: Finished difference Result 9305 states and 13588 transitions. [2020-10-14 08:26:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:05,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-14 08:26:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:05,349 INFO L225 Difference]: With dead ends: 9305 [2020-10-14 08:26:05,349 INFO L226 Difference]: Without dead ends: 6318 [2020-10-14 08:26:05,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2020-10-14 08:26:05,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 6298. [2020-10-14 08:26:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6298 states. [2020-10-14 08:26:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6298 states to 6298 states and 9086 transitions. [2020-10-14 08:26:05,815 INFO L78 Accepts]: Start accepts. Automaton has 6298 states and 9086 transitions. Word has length 149 [2020-10-14 08:26:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:05,816 INFO L479 AbstractCegarLoop]: Abstraction has 6298 states and 9086 transitions. [2020-10-14 08:26:05,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6298 states and 9086 transitions. [2020-10-14 08:26:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 08:26:05,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:05,828 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] [2020-10-14 08:26:05,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:26:05,828 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:05,829 INFO L82 PathProgramCache]: Analyzing trace with hash -148775654, now seen corresponding path program 1 times [2020-10-14 08:26:05,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:05,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668277743] [2020-10-14 08:26:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:06,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:10,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:10,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 08:26:10,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:26:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 08:26:10,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:10,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:26:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:26:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:11,267 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:11,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:11,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:11,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:11,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:11,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:26:11,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:11,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:11,313 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 08:26:11,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668277743] [2020-10-14 08:26:11,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:11,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:11,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707578698] [2020-10-14 08:26:11,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:11,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:11,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:11,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:11,326 INFO L87 Difference]: Start difference. First operand 6298 states and 9086 transitions. Second operand 4 states. [2020-10-14 08:26:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:13,433 INFO L93 Difference]: Finished difference Result 18698 states and 26992 transitions. [2020-10-14 08:26:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:26:13,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 08:26:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:13,476 INFO L225 Difference]: With dead ends: 18698 [2020-10-14 08:26:13,477 INFO L226 Difference]: Without dead ends: 12549 [2020-10-14 08:26:13,494 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 08:26:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12549 states. [2020-10-14 08:26:13,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12549 to 6310. [2020-10-14 08:26:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6310 states. [2020-10-14 08:26:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6310 states to 6310 states and 9102 transitions. [2020-10-14 08:26:13,992 INFO L78 Accepts]: Start accepts. Automaton has 6310 states and 9102 transitions. Word has length 150 [2020-10-14 08:26:13,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:13,992 INFO L479 AbstractCegarLoop]: Abstraction has 6310 states and 9102 transitions. [2020-10-14 08:26:13,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:13,992 INFO L276 IsEmpty]: Start isEmpty. Operand 6310 states and 9102 transitions. [2020-10-14 08:26:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 08:26:14,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:14,003 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] [2020-10-14 08:26:14,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:26:14,003 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:14,004 INFO L82 PathProgramCache]: Analyzing trace with hash 679131220, now seen corresponding path program 1 times [2020-10-14 08:26:14,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:14,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469566585] [2020-10-14 08:26:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:19,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 08:26:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:26:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:26:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:19,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:26:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:26:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:19,317 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:19,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:19,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:19,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:19,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:19,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:26:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:19,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:19,366 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 08:26:19,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469566585] [2020-10-14 08:26:19,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:19,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:19,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488301482] [2020-10-14 08:26:19,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:19,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:19,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:19,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:19,369 INFO L87 Difference]: Start difference. First operand 6310 states and 9102 transitions. Second operand 5 states. [2020-10-14 08:26:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:22,216 INFO L93 Difference]: Finished difference Result 18174 states and 26186 transitions. [2020-10-14 08:26:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:22,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 08:26:22,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:22,244 INFO L225 Difference]: With dead ends: 18174 [2020-10-14 08:26:22,244 INFO L226 Difference]: Without dead ends: 12173 [2020-10-14 08:26:22,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12173 states. [2020-10-14 08:26:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12173 to 12128. [2020-10-14 08:26:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12128 states. [2020-10-14 08:26:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12128 states to 12128 states and 17294 transitions. [2020-10-14 08:26:23,304 INFO L78 Accepts]: Start accepts. Automaton has 12128 states and 17294 transitions. Word has length 151 [2020-10-14 08:26:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:23,305 INFO L479 AbstractCegarLoop]: Abstraction has 12128 states and 17294 transitions. [2020-10-14 08:26:23,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 12128 states and 17294 transitions. [2020-10-14 08:26:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 08:26:23,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:23,330 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] [2020-10-14 08:26:23,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:26:23,331 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:23,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1380746682, now seen corresponding path program 1 times [2020-10-14 08:26:23,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:23,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559427605] [2020-10-14 08:26:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:23,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:28,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:28,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 08:26:28,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:26:28,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:26:28,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:28,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 08:26:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:26:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:28,678 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:28,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:28,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:28,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:26:28,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:28,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:28,715 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 08:26:28,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559427605] [2020-10-14 08:26:28,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:28,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:28,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797150224] [2020-10-14 08:26:28,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:28,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:28,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:28,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:28,717 INFO L87 Difference]: Start difference. First operand 12128 states and 17294 transitions. Second operand 5 states. [2020-10-14 08:26:30,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:30,926 INFO L93 Difference]: Finished difference Result 24210 states and 34524 transitions. [2020-10-14 08:26:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:30,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 08:26:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:30,953 INFO L225 Difference]: With dead ends: 24210 [2020-10-14 08:26:30,953 INFO L226 Difference]: Without dead ends: 12123 [2020-10-14 08:26:30,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:30,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12123 states. [2020-10-14 08:26:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12123 to 12123. [2020-10-14 08:26:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12123 states. [2020-10-14 08:26:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 17285 transitions. [2020-10-14 08:26:31,765 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 17285 transitions. Word has length 151 [2020-10-14 08:26:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:31,765 INFO L479 AbstractCegarLoop]: Abstraction has 12123 states and 17285 transitions. [2020-10-14 08:26:31,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 17285 transitions. [2020-10-14 08:26:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 08:26:31,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:31,782 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] [2020-10-14 08:26:31,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:26:31,783 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash -2088557960, now seen corresponding path program 1 times [2020-10-14 08:26:31,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:31,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238981416] [2020-10-14 08:26:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:31,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:32,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:33,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:36,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 08:26:36,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:26:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:26:36,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:36,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:26:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 08:26:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:37,098 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:37,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:37,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:37,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:37,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:37,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:26:37,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:37,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:37,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:37,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:37,149 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 08:26:37,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238981416] [2020-10-14 08:26:37,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:37,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:37,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930030310] [2020-10-14 08:26:37,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:37,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:37,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:37,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:37,151 INFO L87 Difference]: Start difference. First operand 12123 states and 17285 transitions. Second operand 5 states. [2020-10-14 08:26:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:39,728 INFO L93 Difference]: Finished difference Result 26787 states and 38185 transitions. [2020-10-14 08:26:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:39,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 08:26:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:39,753 INFO L225 Difference]: With dead ends: 26787 [2020-10-14 08:26:39,754 INFO L226 Difference]: Without dead ends: 15134 [2020-10-14 08:26:39,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15134 states. [2020-10-14 08:26:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15134 to 15099. [2020-10-14 08:26:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15099 states. [2020-10-14 08:26:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 21135 transitions. [2020-10-14 08:26:40,851 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 21135 transitions. Word has length 151 [2020-10-14 08:26:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:40,851 INFO L479 AbstractCegarLoop]: Abstraction has 15099 states and 21135 transitions. [2020-10-14 08:26:40,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 21135 transitions. [2020-10-14 08:26:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 08:26:40,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:40,868 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] [2020-10-14 08:26:40,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:26:40,869 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:40,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1846215223, now seen corresponding path program 1 times [2020-10-14 08:26:40,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:40,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978543552] [2020-10-14 08:26:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:41,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:45,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:45,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 08:26:45,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:26:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:26:45,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:45,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:26:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:26:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 08:26:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:46,181 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:46,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:46,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:46,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:46,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:26:46,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:46,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:46,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:26:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:46,247 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 08:26:46,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978543552] [2020-10-14 08:26:46,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:46,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:46,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725765776] [2020-10-14 08:26:46,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:26:46,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:46,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:26:46,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:46,249 INFO L87 Difference]: Start difference. First operand 15099 states and 21135 transitions. Second operand 6 states. [2020-10-14 08:26:46,519 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-14 08:26:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:50,479 INFO L93 Difference]: Finished difference Result 33978 states and 49279 transitions. [2020-10-14 08:26:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:26:50,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-10-14 08:26:50,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:50,512 INFO L225 Difference]: With dead ends: 33978 [2020-10-14 08:26:50,512 INFO L226 Difference]: Without dead ends: 27419 [2020-10-14 08:26:50,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:26:50,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27419 states. [2020-10-14 08:26:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27419 to 27413. [2020-10-14 08:26:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27413 states. [2020-10-14 08:26:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27413 states to 27413 states and 38673 transitions. [2020-10-14 08:26:52,195 INFO L78 Accepts]: Start accepts. Automaton has 27413 states and 38673 transitions. Word has length 159 [2020-10-14 08:26:52,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:52,195 INFO L479 AbstractCegarLoop]: Abstraction has 27413 states and 38673 transitions. [2020-10-14 08:26:52,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:26:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 27413 states and 38673 transitions. [2020-10-14 08:26:52,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 08:26:52,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:52,215 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] [2020-10-14 08:26:52,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:26:52,216 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:52,222 INFO L82 PathProgramCache]: Analyzing trace with hash 755924257, now seen corresponding path program 1 times [2020-10-14 08:26:52,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:52,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363272068] [2020-10-14 08:26:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:52,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:57,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 08:26:57,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:26:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:26:57,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:57,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:26:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 08:26:57,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:57,535 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:57,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:57,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:26:57,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:57,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:57,578 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 08:26:57,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363272068] [2020-10-14 08:26:57,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:57,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:57,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586604966] [2020-10-14 08:26:57,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:57,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:57,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:57,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:57,580 INFO L87 Difference]: Start difference. First operand 27413 states and 38673 transitions. Second operand 5 states. [2020-10-14 08:27:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:00,420 INFO L93 Difference]: Finished difference Result 44034 states and 62104 transitions. [2020-10-14 08:27:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:00,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-14 08:27:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:00,443 INFO L225 Difference]: With dead ends: 44034 [2020-10-14 08:27:00,444 INFO L226 Difference]: Without dead ends: 22296 [2020-10-14 08:27:00,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22296 states. [2020-10-14 08:27:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22296 to 22296. [2020-10-14 08:27:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22296 states. [2020-10-14 08:27:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22296 states to 22296 states and 31369 transitions. [2020-10-14 08:27:01,889 INFO L78 Accepts]: Start accepts. Automaton has 22296 states and 31369 transitions. Word has length 159 [2020-10-14 08:27:01,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:01,889 INFO L479 AbstractCegarLoop]: Abstraction has 22296 states and 31369 transitions. [2020-10-14 08:27:01,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 22296 states and 31369 transitions. [2020-10-14 08:27:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 08:27:01,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:01,905 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] [2020-10-14 08:27:01,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:27:01,905 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:01,906 INFO L82 PathProgramCache]: Analyzing trace with hash 416606030, now seen corresponding path program 1 times [2020-10-14 08:27:01,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:01,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164195602] [2020-10-14 08:27:01,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:02,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:04,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:06,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:06,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 08:27:06,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:27:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:27:06,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:06,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:27:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 08:27:06,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:07,277 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:27:07,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:07,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:07,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:07,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:07,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:27:07,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:07,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:07,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:27:07,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164195602] [2020-10-14 08:27:07,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:07,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:07,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974281101] [2020-10-14 08:27:07,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:07,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:07,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:07,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:07,344 INFO L87 Difference]: Start difference. First operand 22296 states and 31369 transitions. Second operand 5 states. [2020-10-14 08:27:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:13,085 INFO L93 Difference]: Finished difference Result 59210 states and 83199 transitions. [2020-10-14 08:27:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:13,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 08:27:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:13,125 INFO L225 Difference]: With dead ends: 59210 [2020-10-14 08:27:13,125 INFO L226 Difference]: Without dead ends: 38332 [2020-10-14 08:27:13,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38332 states. [2020-10-14 08:27:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38332 to 38260. [2020-10-14 08:27:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38260 states. [2020-10-14 08:27:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38260 states to 38260 states and 52959 transitions. [2020-10-14 08:27:16,829 INFO L78 Accepts]: Start accepts. Automaton has 38260 states and 52959 transitions. Word has length 165 [2020-10-14 08:27:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:16,830 INFO L479 AbstractCegarLoop]: Abstraction has 38260 states and 52959 transitions. [2020-10-14 08:27:16,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:16,830 INFO L276 IsEmpty]: Start isEmpty. Operand 38260 states and 52959 transitions. [2020-10-14 08:27:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 08:27:16,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:16,846 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] [2020-10-14 08:27:16,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:27:16,846 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:16,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2115396808, now seen corresponding path program 1 times [2020-10-14 08:27:16,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:16,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354151146] [2020-10-14 08:27:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:21,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:21,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 08:27:21,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:27:21,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:27:21,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:21,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 08:27:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:27:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:22,177 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:27:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:22,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:22,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:22,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:22,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:27:22,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:22,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:22,212 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 08:27:22,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354151146] [2020-10-14 08:27:22,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:22,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:22,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538466501] [2020-10-14 08:27:22,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:22,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:22,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:22,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:22,214 INFO L87 Difference]: Start difference. First operand 38260 states and 52959 transitions. Second operand 5 states. [2020-10-14 08:27:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:25,818 INFO L93 Difference]: Finished difference Result 67249 states and 93052 transitions. [2020-10-14 08:27:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:25,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 08:27:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:25,855 INFO L225 Difference]: With dead ends: 67249 [2020-10-14 08:27:25,855 INFO L226 Difference]: Without dead ends: 29081 [2020-10-14 08:27:25,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29081 states. [2020-10-14 08:27:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29081 to 29081. [2020-10-14 08:27:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29081 states. [2020-10-14 08:27:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29081 states to 29081 states and 40221 transitions. [2020-10-14 08:27:28,032 INFO L78 Accepts]: Start accepts. Automaton has 29081 states and 40221 transitions. Word has length 165 [2020-10-14 08:27:28,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:28,033 INFO L479 AbstractCegarLoop]: Abstraction has 29081 states and 40221 transitions. [2020-10-14 08:27:28,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:28,033 INFO L276 IsEmpty]: Start isEmpty. Operand 29081 states and 40221 transitions. [2020-10-14 08:27:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 08:27:28,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:28,046 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] [2020-10-14 08:27:28,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:27:28,047 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:28,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:28,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1206259209, now seen corresponding path program 1 times [2020-10-14 08:27:28,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:28,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766837971] [2020-10-14 08:27:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:33,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 08:27:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:27:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:27:33,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:33,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:27:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 08:27:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:27:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:33,317 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:27:33,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:33,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:33,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:33,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:27:33,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:33,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:33,352 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 08:27:33,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766837971] [2020-10-14 08:27:33,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:33,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:27:33,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048153525] [2020-10-14 08:27:33,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:27:33,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:33,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:27:33,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:27:33,354 INFO L87 Difference]: Start difference. First operand 29081 states and 40221 transitions. Second operand 4 states. [2020-10-14 08:27:33,588 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:27:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:39,175 INFO L93 Difference]: Finished difference Result 66983 states and 95781 transitions. [2020-10-14 08:27:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:39,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-14 08:27:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:39,227 INFO L225 Difference]: With dead ends: 66983 [2020-10-14 08:27:39,227 INFO L226 Difference]: Without dead ends: 46948 [2020-10-14 08:27:39,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:39,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46948 states. [2020-10-14 08:27:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46948 to 45258. [2020-10-14 08:27:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45258 states. [2020-10-14 08:27:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45258 states to 45258 states and 64170 transitions. [2020-10-14 08:27:42,614 INFO L78 Accepts]: Start accepts. Automaton has 45258 states and 64170 transitions. Word has length 173 [2020-10-14 08:27:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:42,614 INFO L479 AbstractCegarLoop]: Abstraction has 45258 states and 64170 transitions. [2020-10-14 08:27:42,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:27:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 45258 states and 64170 transitions. [2020-10-14 08:27:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 08:27:42,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:42,637 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] [2020-10-14 08:27:42,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:27:42,637 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1532955900, now seen corresponding path program 1 times [2020-10-14 08:27:42,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:42,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130044043] [2020-10-14 08:27:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:47,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 08:27:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:47,950 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:27:47,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:47,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:47,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:47,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:47,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:27:47,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:47,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:27:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:47,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:27:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:47,997 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 08:27:47,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130044043] [2020-10-14 08:27:47,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:47,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:47,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688446233] [2020-10-14 08:27:47,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:27:47,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:47,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:27:47,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:47,999 INFO L87 Difference]: Start difference. First operand 45258 states and 64170 transitions. Second operand 6 states. [2020-10-14 08:27:48,266 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-14 08:27:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:55,088 INFO L93 Difference]: Finished difference Result 107526 states and 153565 transitions. [2020-10-14 08:27:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:27:55,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-14 08:27:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:55,168 INFO L225 Difference]: With dead ends: 107526 [2020-10-14 08:27:55,169 INFO L226 Difference]: Without dead ends: 63687 [2020-10-14 08:27:55,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:27:55,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63687 states. [2020-10-14 08:27:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63687 to 63681. [2020-10-14 08:27:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63681 states. [2020-10-14 08:27:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63681 states to 63681 states and 90317 transitions. [2020-10-14 08:27:59,955 INFO L78 Accepts]: Start accepts. Automaton has 63681 states and 90317 transitions. Word has length 173 [2020-10-14 08:27:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:59,956 INFO L479 AbstractCegarLoop]: Abstraction has 63681 states and 90317 transitions. [2020-10-14 08:27:59,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:27:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 63681 states and 90317 transitions. [2020-10-14 08:27:59,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 08:27:59,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:59,984 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] [2020-10-14 08:27:59,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:27:59,984 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:59,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:59,985 INFO L82 PathProgramCache]: Analyzing trace with hash 472706839, now seen corresponding path program 1 times [2020-10-14 08:27:59,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:59,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200157678] [2020-10-14 08:27:59,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:04,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:04,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:05,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:05,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 08:28:05,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:28:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:28:05,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:05,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 08:28:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 08:28:05,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:05,247 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:28:05,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:05,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:05,279 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 08:28:05,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200157678] [2020-10-14 08:28:05,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:05,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:05,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657203841] [2020-10-14 08:28:05,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:05,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:05,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:05,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:05,281 INFO L87 Difference]: Start difference. First operand 63681 states and 90317 transitions. Second operand 4 states. [2020-10-14 08:28:11,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:11,228 INFO L93 Difference]: Finished difference Result 101437 states and 146103 transitions. [2020-10-14 08:28:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:28:11,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-14 08:28:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:11,289 INFO L225 Difference]: With dead ends: 101437 [2020-10-14 08:28:11,289 INFO L226 Difference]: Without dead ends: 51377 [2020-10-14 08:28:11,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51377 states. [2020-10-14 08:28:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51377 to 51371. [2020-10-14 08:28:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51371 states. [2020-10-14 08:28:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51371 states to 51371 states and 72018 transitions. [2020-10-14 08:28:14,928 INFO L78 Accepts]: Start accepts. Automaton has 51371 states and 72018 transitions. Word has length 173 [2020-10-14 08:28:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:14,929 INFO L479 AbstractCegarLoop]: Abstraction has 51371 states and 72018 transitions. [2020-10-14 08:28:14,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:28:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 51371 states and 72018 transitions. [2020-10-14 08:28:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 08:28:14,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:14,945 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] [2020-10-14 08:28:14,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:28:14,945 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:14,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1465954776, now seen corresponding path program 1 times [2020-10-14 08:28:14,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:14,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739013180] [2020-10-14 08:28:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:15,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:15,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:20,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:20,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 08:28:20,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:28:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5540 [2020-10-14 08:28:20,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:20,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:28:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:28:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 08:28:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:20,773 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:28:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:20,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:20,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:20,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:28:20,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:20,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:28:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:20,823 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 08:28:20,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739013180] [2020-10-14 08:28:20,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:20,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:28:20,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268370449] [2020-10-14 08:28:20,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:28:20,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:20,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:28:20,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:28:20,825 INFO L87 Difference]: Start difference. First operand 51371 states and 72018 transitions. Second operand 6 states. [2020-10-14 08:28:21,086 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-14 08:28:26,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:26,358 INFO L93 Difference]: Finished difference Result 88396 states and 125672 transitions. [2020-10-14 08:28:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:28:26,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-14 08:28:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:26,401 INFO L225 Difference]: With dead ends: 88396 [2020-10-14 08:28:26,401 INFO L226 Difference]: Without dead ends: 42547 [2020-10-14 08:28:26,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:28:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42547 states. [2020-10-14 08:28:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42547 to 37094. [2020-10-14 08:28:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37094 states. [2020-10-14 08:28:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37094 states to 37094 states and 51724 transitions. [2020-10-14 08:28:29,064 INFO L78 Accepts]: Start accepts. Automaton has 37094 states and 51724 transitions. Word has length 173 [2020-10-14 08:28:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:29,064 INFO L479 AbstractCegarLoop]: Abstraction has 37094 states and 51724 transitions. [2020-10-14 08:28:29,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:28:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 37094 states and 51724 transitions. [2020-10-14 08:28:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 08:28:29,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:29,078 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] [2020-10-14 08:28:29,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:28:29,078 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:29,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1724682903, now seen corresponding path program 1 times [2020-10-14 08:28:29,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:29,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281364097] [2020-10-14 08:28:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:29,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 08:28:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:28:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:28:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:34,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:28:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 08:28:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 08:28:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:34,383 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:28:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:34,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:34,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:34,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:28:34,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:34,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:34,429 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 08:28:34,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281364097] [2020-10-14 08:28:34,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:34,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:28:34,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265009579] [2020-10-14 08:28:34,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:28:34,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:34,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:28:34,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:28:34,431 INFO L87 Difference]: Start difference. First operand 37094 states and 51724 transitions. Second operand 5 states.