/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:11:41,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:11:41,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:11:41,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:11:41,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:11:41,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:11:41,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:11:41,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:11:41,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:11:41,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:11:41,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:11:41,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:11:41,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:11:41,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:11:41,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:11:41,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:11:41,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:11:41,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:11:41,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:11:41,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:11:41,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:11:41,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:11:41,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:11:41,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:11:41,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:11:41,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:11:41,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:11:41,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:11:41,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:11:41,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:11:41,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:11:41,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:11:41,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:11:41,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:11:41,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:11:41,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:11:41,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:11:41,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:11:41,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:11:41,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:11:41,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:11:41,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:11:41,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:11:41,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:11:41,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:11:41,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:11:41,187 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:11:41,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:11:41,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:11:41,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:11:41,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:11:41,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:11:41,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:11:41,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:11:41,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:11:41,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:11:41,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:11:41,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:11:41,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:11:41,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:11:41,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:11:41,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:11:41,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:11:41,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:11:41,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:11:41,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:11:41,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:11:41,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:11:41,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:11:41,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:11:41,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:11:41,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:11:41,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:11:41,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:11:41,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:11:41,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:11:41,539 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:11:41,540 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:11:41,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dea56a99d/743048eda4e9493cb0703699b393f69c/FLAG73292e749 [2020-10-15 03:11:42,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:11:42,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:11:42,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dea56a99d/743048eda4e9493cb0703699b393f69c/FLAG73292e749 [2020-10-15 03:11:42,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dea56a99d/743048eda4e9493cb0703699b393f69c [2020-10-15 03:11:42,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:11:42,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:11:42,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:11:42,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:11:42,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:11:42,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:11:42" (1/1) ... [2020-10-15 03:11:42,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef7a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:42, skipping insertion in model container [2020-10-15 03:11:42,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:11:42" (1/1) ... [2020-10-15 03:11:42,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:11:42,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:11:44,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:11:44,066 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:11:44,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:11:44,815 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:11:44,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44 WrapperNode [2020-10-15 03:11:44,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:11:44,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:11:44,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:11:44,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:11:44,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (1/1) ... [2020-10-15 03:11:44,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (1/1) ... [2020-10-15 03:11:44,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (1/1) ... [2020-10-15 03:11:44,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (1/1) ... [2020-10-15 03:11:44,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (1/1) ... [2020-10-15 03:11:45,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (1/1) ... [2020-10-15 03:11:45,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (1/1) ... [2020-10-15 03:11:45,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:11:45,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:11:45,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:11:45,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:11:45,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:11:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:11:45,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:11:45,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:11:45,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:11:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:11:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:11:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:11:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:11:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:11:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:11:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:11:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:11:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:11:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:11:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:11:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:11:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:11:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:11:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:11:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:11:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:11:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:11:50,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:11:50,518 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:11:50,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:11:50 BoogieIcfgContainer [2020-10-15 03:11:50,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:11:50,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:11:50,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:11:50,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:11:50,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:11:42" (1/3) ... [2020-10-15 03:11:50,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9c80eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:11:50, skipping insertion in model container [2020-10-15 03:11:50,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:44" (2/3) ... [2020-10-15 03:11:50,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9c80eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:11:50, skipping insertion in model container [2020-10-15 03:11:50,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:11:50" (3/3) ... [2020-10-15 03:11:50,553 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:11:50,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:11:50,575 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:11:50,590 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:11:50,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:11:50,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:11:50,624 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:11:50,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:11:50,624 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:11:50,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:11:50,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:11:50,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:11:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states. [2020-10-15 03:11:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-15 03:11:50,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:50,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:11:50,708 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:50,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1508496326, now seen corresponding path program 1 times [2020-10-15 03:11:50,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:50,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663737534] [2020-10-15 03:11:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:52,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:56,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:56,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-15 03:11:56,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:11:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-15 03:11:56,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:56,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:11:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:11:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-15 03:11:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:11:58,368 WARN L193 SmtUtils]: Spent 979.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:11:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:58,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:58,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:11:58,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:58,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:11:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:11:58,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:11:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:11:58,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663737534] [2020-10-15 03:11:58,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:58,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:11:58,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673769090] [2020-10-15 03:11:58,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:11:58,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:58,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:11:58,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:11:58,850 INFO L87 Difference]: Start difference. First operand 1439 states. Second operand 5 states. [2020-10-15 03:12:16,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:16,469 INFO L93 Difference]: Finished difference Result 4222 states and 7527 transitions. [2020-10-15 03:12:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:12:16,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2020-10-15 03:12:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:16,535 INFO L225 Difference]: With dead ends: 4222 [2020-10-15 03:12:16,535 INFO L226 Difference]: Without dead ends: 2832 [2020-10-15 03:12:16,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:12:16,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2020-10-15 03:12:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2830. [2020-10-15 03:12:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2830 states. [2020-10-15 03:12:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 4760 transitions. [2020-10-15 03:12:16,885 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 4760 transitions. Word has length 356 [2020-10-15 03:12:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:16,890 INFO L479 AbstractCegarLoop]: Abstraction has 2830 states and 4760 transitions. [2020-10-15 03:12:16,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:12:16,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 4760 transitions. [2020-10-15 03:12:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-15 03:12:16,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:16,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:12:16,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:12:16,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:16,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1528761275, now seen corresponding path program 1 times [2020-10-15 03:12:16,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:16,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820688572] [2020-10-15 03:12:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:18,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:21,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:22,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-15 03:12:22,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:12:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-15 03:12:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:22,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:12:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:12:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-15 03:12:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:23,301 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:12:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:23,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:23,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 03:12:23,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:23,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:12:23,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820688572] [2020-10-15 03:12:23,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:23,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:12:23,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803750354] [2020-10-15 03:12:23,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:12:23,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:23,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:12:23,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:23,820 INFO L87 Difference]: Start difference. First operand 2830 states and 4760 transitions. Second operand 4 states. [2020-10-15 03:12:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:44,893 INFO L93 Difference]: Finished difference Result 8225 states and 13808 transitions. [2020-10-15 03:12:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:12:44,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 358 [2020-10-15 03:12:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:44,927 INFO L225 Difference]: With dead ends: 8225 [2020-10-15 03:12:44,928 INFO L226 Difference]: Without dead ends: 5564 [2020-10-15 03:12:44,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2020-10-15 03:12:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5562. [2020-10-15 03:12:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2020-10-15 03:12:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 9321 transitions. [2020-10-15 03:12:45,206 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 9321 transitions. Word has length 358 [2020-10-15 03:12:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:45,209 INFO L479 AbstractCegarLoop]: Abstraction has 5562 states and 9321 transitions. [2020-10-15 03:12:45,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:12:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 9321 transitions. [2020-10-15 03:12:45,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-15 03:12:45,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:45,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:12:45,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:12:45,230 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:45,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1623960255, now seen corresponding path program 1 times [2020-10-15 03:12:45,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:45,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722993308] [2020-10-15 03:12:45,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:45,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:50,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-15 03:12:50,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:12:50,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-15 03:12:50,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:50,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:12:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:12:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-15 03:12:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:51,547 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:12:51,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:51,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:51,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:51,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 03:12:51,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:51,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:12:52,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722993308] [2020-10-15 03:12:52,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:52,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:12:52,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516217298] [2020-10-15 03:12:52,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:12:52,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:52,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:12:52,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:52,026 INFO L87 Difference]: Start difference. First operand 5562 states and 9321 transitions. Second operand 4 states. [2020-10-15 03:13:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:12,408 INFO L93 Difference]: Finished difference Result 16245 states and 27179 transitions. [2020-10-15 03:13:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:13:12,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 359 [2020-10-15 03:13:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:12,462 INFO L225 Difference]: With dead ends: 16245 [2020-10-15 03:13:12,463 INFO L226 Difference]: Without dead ends: 10915 [2020-10-15 03:13:12,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:13:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10915 states. [2020-10-15 03:13:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10915 to 10913. [2020-10-15 03:13:13,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10913 states. [2020-10-15 03:13:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10913 states to 10913 states and 18212 transitions. [2020-10-15 03:13:13,057 INFO L78 Accepts]: Start accepts. Automaton has 10913 states and 18212 transitions. Word has length 359 [2020-10-15 03:13:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:13,057 INFO L479 AbstractCegarLoop]: Abstraction has 10913 states and 18212 transitions. [2020-10-15 03:13:13,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:13:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 10913 states and 18212 transitions. [2020-10-15 03:13:13,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-15 03:13:13,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:13,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:13:13,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:13:13,091 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:13,092 INFO L82 PathProgramCache]: Analyzing trace with hash 633198406, now seen corresponding path program 1 times [2020-10-15 03:13:13,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:13,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885656767] [2020-10-15 03:13:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:14,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:18,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:18,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-15 03:13:18,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:13:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:13:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:18,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:13:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-15 03:13:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:19,233 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:13:19,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:19,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:19,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:19,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:19,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:13:19,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:19,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:19,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:19,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885656767] [2020-10-15 03:13:19,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:19,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:13:19,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635810821] [2020-10-15 03:13:19,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:13:19,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:19,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:13:19,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:13:19,629 INFO L87 Difference]: Start difference. First operand 10913 states and 18212 transitions. Second operand 5 states. [2020-10-15 03:13:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:36,941 INFO L93 Difference]: Finished difference Result 32029 states and 53373 transitions. [2020-10-15 03:13:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:13:36,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 359 [2020-10-15 03:13:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:37,008 INFO L225 Difference]: With dead ends: 32029 [2020-10-15 03:13:37,008 INFO L226 Difference]: Without dead ends: 21463 [2020-10-15 03:13:37,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:13:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21463 states. [2020-10-15 03:13:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21463 to 21461. [2020-10-15 03:13:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21461 states. [2020-10-15 03:13:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21461 states to 21461 states and 35655 transitions. [2020-10-15 03:13:38,396 INFO L78 Accepts]: Start accepts. Automaton has 21461 states and 35655 transitions. Word has length 359 [2020-10-15 03:13:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:38,396 INFO L479 AbstractCegarLoop]: Abstraction has 21461 states and 35655 transitions. [2020-10-15 03:13:38,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:13:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 21461 states and 35655 transitions. [2020-10-15 03:13:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-15 03:13:38,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:38,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:13:38,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:13:38,455 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:38,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1929404767, now seen corresponding path program 1 times [2020-10-15 03:13:38,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:38,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634936410] [2020-10-15 03:13:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:40,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:40,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:42,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:43,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:43,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:43,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-15 03:13:43,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:13:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:13:43,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:43,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:43,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:13:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-15 03:13:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:44,633 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:13:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:44,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:44,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:44,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:44,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:13:44,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:44,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:44,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:44,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634936410] [2020-10-15 03:13:44,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:44,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:13:44,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224211284] [2020-10-15 03:13:44,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:13:44,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:44,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:13:44,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:13:44,904 INFO L87 Difference]: Start difference. First operand 21461 states and 35655 transitions. Second operand 5 states. [2020-10-15 03:14:00,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:00,115 INFO L93 Difference]: Finished difference Result 62953 states and 104436 transitions. [2020-10-15 03:14:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:14:00,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2020-10-15 03:14:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:00,252 INFO L225 Difference]: With dead ends: 62953 [2020-10-15 03:14:00,252 INFO L226 Difference]: Without dead ends: 42031 [2020-10-15 03:14:00,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42031 states. [2020-10-15 03:14:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42031 to 42029. [2020-10-15 03:14:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42029 states. [2020-10-15 03:14:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42029 states to 42029 states and 69418 transitions. [2020-10-15 03:14:04,162 INFO L78 Accepts]: Start accepts. Automaton has 42029 states and 69418 transitions. Word has length 361 [2020-10-15 03:14:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:04,163 INFO L479 AbstractCegarLoop]: Abstraction has 42029 states and 69418 transitions. [2020-10-15 03:14:04,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:14:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 42029 states and 69418 transitions. [2020-10-15 03:14:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-15 03:14:04,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:04,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:04,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:14:04,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1647464590, now seen corresponding path program 1 times [2020-10-15 03:14:04,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:04,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402060241] [2020-10-15 03:14:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:04,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:07,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:09,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-15 03:14:09,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:14:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:14:09,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:09,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:14:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-15 03:14:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:10,260 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:14:10,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:10,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:10,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:14:10,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:10,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:10,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:10,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402060241] [2020-10-15 03:14:10,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:10,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:14:10,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772279182] [2020-10-15 03:14:10,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:14:10,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:10,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:14:10,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:14:10,464 INFO L87 Difference]: Start difference. First operand 42029 states and 69418 transitions. Second operand 5 states. [2020-10-15 03:14:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:31,558 INFO L93 Difference]: Finished difference Result 124654 states and 205796 transitions. [2020-10-15 03:14:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:14:31,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-15 03:14:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:31,777 INFO L225 Difference]: With dead ends: 124654 [2020-10-15 03:14:31,777 INFO L226 Difference]: Without dead ends: 82908 [2020-10-15 03:14:31,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82908 states. [2020-10-15 03:14:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82908 to 82906. [2020-10-15 03:14:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82906 states. [2020-10-15 03:14:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82906 states to 82906 states and 136213 transitions. [2020-10-15 03:14:39,499 INFO L78 Accepts]: Start accepts. Automaton has 82906 states and 136213 transitions. Word has length 362 [2020-10-15 03:14:39,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:39,500 INFO L479 AbstractCegarLoop]: Abstraction has 82906 states and 136213 transitions. [2020-10-15 03:14:39,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:14:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 82906 states and 136213 transitions. [2020-10-15 03:14:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-15 03:14:39,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:39,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:39,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:14:39,612 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:39,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1075116551, now seen corresponding path program 1 times [2020-10-15 03:14:39,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:39,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926764641] [2020-10-15 03:14:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:39,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:41,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:42,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:42,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:44,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-15 03:14:44,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:14:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-15 03:14:44,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:44,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:14:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-15 03:14:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:45,697 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:14:45,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:45,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:45,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:14:45,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:45,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:45,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926764641] [2020-10-15 03:14:45,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:45,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:14:45,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505894893] [2020-10-15 03:14:45,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:14:45,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:45,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:14:45,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:14:45,961 INFO L87 Difference]: Start difference. First operand 82906 states and 136213 transitions. Second operand 5 states. [2020-10-15 03:15:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:16,056 INFO L93 Difference]: Finished difference Result 243062 states and 398675 transitions. [2020-10-15 03:15:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:15:16,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 364 [2020-10-15 03:15:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:16,424 INFO L225 Difference]: With dead ends: 243062 [2020-10-15 03:15:16,424 INFO L226 Difference]: Without dead ends: 162676 [2020-10-15 03:15:16,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162676 states.