/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_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:59:24,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:59:24,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:59:24,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:59:24,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:59:24,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:59:24,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:59:24,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:59:24,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:59:24,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:59:24,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:59:24,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:59:24,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:59:24,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:59:24,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:59:24,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:59:24,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:59:24,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:59:24,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:59:24,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:59:24,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:59:24,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:59:24,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:59:24,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:59:24,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:59:24,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:59:24,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:59:24,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:59:24,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:59:24,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:59:24,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:59:24,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:59:24,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:59:24,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:59:24,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:59:24,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:59:24,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:59:24,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:59:24,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:59:24,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:59:24,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:59:24,326 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 08:59:24,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:59:24,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:59:24,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:59:24,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:59:24,365 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:59:24,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:59:24,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:59:24,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:59:24,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:59:24,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:59:24,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:59:24,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:59:24,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:59:24,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:59:24,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:59:24,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:59:24,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:59:24,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:59:24,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:59:24,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:59:24,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:59:24,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:59:24,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:59:24,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:59:24,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:59:24,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:59:24,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:59:24,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:59:24,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:59:24,371 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 08:59:24,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:59:24,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:59:24,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:59:24,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:59:24,669 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:59:24,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:59:24,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5c5c99bd/a37072e1261b495fbdf87cfe0c85edbb/FLAGce59bf59b [2020-10-14 08:59:25,227 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:59:25,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:59:25,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5c5c99bd/a37072e1261b495fbdf87cfe0c85edbb/FLAGce59bf59b [2020-10-14 08:59:25,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5c5c99bd/a37072e1261b495fbdf87cfe0c85edbb [2020-10-14 08:59:25,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:59:25,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:59:25,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:59:25,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:59:25,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:59:25,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:59:25" (1/1) ... [2020-10-14 08:59:25,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:25, skipping insertion in model container [2020-10-14 08:59:25,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:59:25" (1/1) ... [2020-10-14 08:59:25,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:59:25,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:59:25,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:59:25,998 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:59:26,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:59:26,241 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:59:26,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26 WrapperNode [2020-10-14 08:59:26,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:59:26,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:59:26,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:59:26,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:59:26,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (1/1) ... [2020-10-14 08:59:26,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (1/1) ... [2020-10-14 08:59:26,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (1/1) ... [2020-10-14 08:59:26,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (1/1) ... [2020-10-14 08:59:26,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (1/1) ... [2020-10-14 08:59:26,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (1/1) ... [2020-10-14 08:59:26,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (1/1) ... [2020-10-14 08:59:26,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:59:26,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:59:26,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:59:26,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:59:26,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (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 08:59:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:59:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:59:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:59:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:59:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:59:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:59:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:59:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:59:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:59:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:59:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:59:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:59:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:59:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:59:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:59:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:59:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:59:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:59:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:59:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-14 08:59:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:59:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:59:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:59:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:59:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:59:27,570 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:59:27,570 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:59:27,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:59:27 BoogieIcfgContainer [2020-10-14 08:59:27,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:59:27,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:59:27,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:59:27,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:59:27,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:59:25" (1/3) ... [2020-10-14 08:59:27,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181cdb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:59:27, skipping insertion in model container [2020-10-14 08:59:27,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:59:26" (2/3) ... [2020-10-14 08:59:27,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181cdb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:59:27, skipping insertion in model container [2020-10-14 08:59:27,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:59:27" (3/3) ... [2020-10-14 08:59:27,585 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:59:27,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:59:27,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:59:27,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:59:27,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:59:27,644 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:59:27,644 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:59:27,644 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:59:27,644 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:59:27,644 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:59:27,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:59:27,645 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:59:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-10-14 08:59:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 08:59:27,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:27,682 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] [2020-10-14 08:59:27,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:27,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1355773301, now seen corresponding path program 1 times [2020-10-14 08:59:27,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:27,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835943048] [2020-10-14 08:59:27,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:28,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:33,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:33,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 08:59:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:59:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 08:59:33,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:33,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 08:59:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:59:33,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:59:33,689 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:33,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:33,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:33,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:59:33,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:33,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:33,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:33,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:33,770 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 08:59:33,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835943048] [2020-10-14 08:59:33,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:33,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:59:33,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238015974] [2020-10-14 08:59:33,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:59:33,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:59:33,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:59:33,802 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-10-14 08:59:34,088 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 08:59:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:35,474 INFO L93 Difference]: Finished difference Result 398 states and 660 transitions. [2020-10-14 08:59:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:59:35,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-14 08:59:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:35,508 INFO L225 Difference]: With dead ends: 398 [2020-10-14 08:59:35,508 INFO L226 Difference]: Without dead ends: 305 [2020-10-14 08:59:35,514 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 08:59:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-14 08:59:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2020-10-14 08:59:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-14 08:59:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 435 transitions. [2020-10-14 08:59:35,635 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 435 transitions. Word has length 111 [2020-10-14 08:59:35,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:35,636 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 435 transitions. [2020-10-14 08:59:35,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:59:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 435 transitions. [2020-10-14 08:59:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 08:59:35,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:35,643 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] [2020-10-14 08:59:35,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:59:35,644 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:35,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1905103645, now seen corresponding path program 1 times [2020-10-14 08:59:35,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:35,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141156108] [2020-10-14 08:59:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:36,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:38,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:40,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:40,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 08:59:40,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:59:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 08:59:40,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:40,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 08:59:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:59:41,069 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:41,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:41,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:41,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:41,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:59:41,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:41,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:41,146 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 08:59:41,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141156108] [2020-10-14 08:59:41,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:41,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:41,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973124806] [2020-10-14 08:59:41,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:41,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:41,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:41,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:41,150 INFO L87 Difference]: Start difference. First operand 303 states and 435 transitions. Second operand 6 states. [2020-10-14 08:59:41,385 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-14 08:59:42,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:42,271 INFO L93 Difference]: Finished difference Result 682 states and 1030 transitions. [2020-10-14 08:59:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:42,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-14 08:59:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:42,277 INFO L225 Difference]: With dead ends: 682 [2020-10-14 08:59:42,278 INFO L226 Difference]: Without dead ends: 459 [2020-10-14 08:59:42,281 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 08:59:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-14 08:59:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2020-10-14 08:59:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-14 08:59:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 677 transitions. [2020-10-14 08:59:42,317 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 677 transitions. Word has length 113 [2020-10-14 08:59:42,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:42,318 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 677 transitions. [2020-10-14 08:59:42,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 677 transitions. [2020-10-14 08:59:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 08:59:42,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:42,320 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] [2020-10-14 08:59:42,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:59:42,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1891234007, now seen corresponding path program 1 times [2020-10-14 08:59:42,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:42,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216926110] [2020-10-14 08:59:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:43,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:46,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:47,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:47,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 08:59:47,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:59:47,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:59:47,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:47,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 08:59:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:47,665 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:47,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:47,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:47,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:47,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:59:47,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:47,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:47,733 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 08:59:47,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216926110] [2020-10-14 08:59:47,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:47,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:47,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154559701] [2020-10-14 08:59:47,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:47,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:47,741 INFO L87 Difference]: Start difference. First operand 457 states and 677 transitions. Second operand 6 states. [2020-10-14 08:59:47,962 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:59:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:48,767 INFO L93 Difference]: Finished difference Result 830 states and 1264 transitions. [2020-10-14 08:59:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:48,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-14 08:59:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:48,775 INFO L225 Difference]: With dead ends: 830 [2020-10-14 08:59:48,775 INFO L226 Difference]: Without dead ends: 457 [2020-10-14 08:59:48,778 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 08:59:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-14 08:59:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2020-10-14 08:59:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-14 08:59:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 672 transitions. [2020-10-14 08:59:48,813 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 672 transitions. Word has length 114 [2020-10-14 08:59:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:48,814 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 672 transitions. [2020-10-14 08:59:48,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 672 transitions. [2020-10-14 08:59:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 08:59:48,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:48,816 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] [2020-10-14 08:59:48,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:59:48,817 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:48,817 INFO L82 PathProgramCache]: Analyzing trace with hash -885133362, now seen corresponding path program 1 times [2020-10-14 08:59:48,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:48,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348099863] [2020-10-14 08:59:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:53,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:53,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 08:59:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:59:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:59:53,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:53,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 08:59:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:54,193 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:59:54,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:54,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:54,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 08:59:54,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:54,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:59:54,292 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 08:59:54,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348099863] [2020-10-14 08:59:54,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:54,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:54,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249329804] [2020-10-14 08:59:54,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:54,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:54,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:54,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:54,297 INFO L87 Difference]: Start difference. First operand 457 states and 672 transitions. Second operand 6 states. [2020-10-14 08:59:54,621 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:59:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:55,526 INFO L93 Difference]: Finished difference Result 1170 states and 1781 transitions. [2020-10-14 08:59:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:55,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-14 08:59:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:55,534 INFO L225 Difference]: With dead ends: 1170 [2020-10-14 08:59:55,534 INFO L226 Difference]: Without dead ends: 785 [2020-10-14 08:59:55,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:59:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-14 08:59:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 783. [2020-10-14 08:59:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2020-10-14 08:59:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1179 transitions. [2020-10-14 08:59:55,592 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1179 transitions. Word has length 115 [2020-10-14 08:59:55,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:55,592 INFO L479 AbstractCegarLoop]: Abstraction has 783 states and 1179 transitions. [2020-10-14 08:59:55,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:55,592 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1179 transitions. [2020-10-14 08:59:55,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 08:59:55,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:55,594 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] [2020-10-14 08:59:55,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:59:55,595 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:55,595 INFO L82 PathProgramCache]: Analyzing trace with hash 560894650, now seen corresponding path program 1 times [2020-10-14 08:59:55,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:55,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889755531] [2020-10-14 08:59:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:55,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:56,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:59,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:00,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:00,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 09:00:00,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:00:00,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 09:00:00,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:00,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:00:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:00:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 09:00:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:00:00,957 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:00,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:00,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:00,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:00:00,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:00,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 09:00:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:01,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889755531] [2020-10-14 09:00:01,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:01,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:00:01,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549509417] [2020-10-14 09:00:01,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:00:01,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:01,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:00:01,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:01,010 INFO L87 Difference]: Start difference. First operand 783 states and 1179 transitions. Second operand 6 states. [2020-10-14 09:00:01,217 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:00:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:03,500 INFO L93 Difference]: Finished difference Result 6086 states and 9464 transitions. [2020-10-14 09:00:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:00:03,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-14 09:00:03,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:03,533 INFO L225 Difference]: With dead ends: 6086 [2020-10-14 09:00:03,533 INFO L226 Difference]: Without dead ends: 5437 [2020-10-14 09:00:03,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:00:03,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2020-10-14 09:00:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 2853. [2020-10-14 09:00:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 09:00:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4399 transitions. [2020-10-14 09:00:03,863 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4399 transitions. Word has length 116 [2020-10-14 09:00:03,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:03,865 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4399 transitions. [2020-10-14 09:00:03,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:00:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4399 transitions. [2020-10-14 09:00:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 09:00:03,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:03,870 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] [2020-10-14 09:00:03,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:00:03,871 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:03,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1900707536, now seen corresponding path program 1 times [2020-10-14 09:00:03,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:03,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988067820] [2020-10-14 09:00:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:04,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:07,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:08,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:08,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:08,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:08,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 09:00:08,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:00:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:00:08,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:08,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:00:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:00:08,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 09:00:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:09,184 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:09,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:09,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:09,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:09,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:09,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:00:09,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:09,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:09,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:09,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:09,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:00:09,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:00:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:09,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988067820] [2020-10-14 09:00:09,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:09,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:00:09,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312853028] [2020-10-14 09:00:09,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:00:09,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:09,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:00:09,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:09,251 INFO L87 Difference]: Start difference. First operand 2853 states and 4399 transitions. Second operand 6 states. [2020-10-14 09:00:09,527 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:00:10,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:10,549 INFO L93 Difference]: Finished difference Result 8120 states and 12596 transitions. [2020-10-14 09:00:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:00:10,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-14 09:00:10,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:10,576 INFO L225 Difference]: With dead ends: 8120 [2020-10-14 09:00:10,576 INFO L226 Difference]: Without dead ends: 5359 [2020-10-14 09:00:10,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:00:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2020-10-14 09:00:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5357. [2020-10-14 09:00:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5357 states. [2020-10-14 09:00:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8261 transitions. [2020-10-14 09:00:10,903 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8261 transitions. Word has length 116 [2020-10-14 09:00:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:10,904 INFO L479 AbstractCegarLoop]: Abstraction has 5357 states and 8261 transitions. [2020-10-14 09:00:10,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:00:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8261 transitions. [2020-10-14 09:00:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 09:00:10,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:10,909 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] [2020-10-14 09:00:10,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:00:10,909 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:10,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1557752683, now seen corresponding path program 1 times [2020-10-14 09:00:10,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:10,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567917305] [2020-10-14 09:00:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:10,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:12,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:15,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:15,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 09:00:15,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:00:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:00:15,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:15,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:00:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:00:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 09:00:15,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:16,166 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:16,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:16,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:16,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:16,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:00:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:16,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:00:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:16,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567917305] [2020-10-14 09:00:16,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:16,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:00:16,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818107243] [2020-10-14 09:00:16,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:00:16,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:16,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:00:16,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:16,224 INFO L87 Difference]: Start difference. First operand 5357 states and 8261 transitions. Second operand 6 states. [2020-10-14 09:00:16,462 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:00:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:17,432 INFO L93 Difference]: Finished difference Result 10638 states and 16441 transitions. [2020-10-14 09:00:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:00:17,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-14 09:00:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:17,457 INFO L225 Difference]: With dead ends: 10638 [2020-10-14 09:00:17,457 INFO L226 Difference]: Without dead ends: 5357 [2020-10-14 09:00:17,468 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 09:00:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2020-10-14 09:00:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 5357. [2020-10-14 09:00:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5357 states. [2020-10-14 09:00:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8195 transitions. [2020-10-14 09:00:17,804 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8195 transitions. Word has length 117 [2020-10-14 09:00:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:17,804 INFO L479 AbstractCegarLoop]: Abstraction has 5357 states and 8195 transitions. [2020-10-14 09:00:17,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:00:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8195 transitions. [2020-10-14 09:00:17,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:00:17,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:17,809 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] [2020-10-14 09:00:17,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:00:17,810 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:17,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:17,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2070446482, now seen corresponding path program 1 times [2020-10-14 09:00:17,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:17,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086935404] [2020-10-14 09:00:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:17,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:22,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:22,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:00:22,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:00:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:00:22,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:22,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:00:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 09:00:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 09:00:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:23,070 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:23,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:23,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:23,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:23,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:00:23,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:23,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:23,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086935404] [2020-10-14 09:00:23,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:23,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:00:23,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959161269] [2020-10-14 09:00:23,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:00:23,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:23,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:00:23,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:23,112 INFO L87 Difference]: Start difference. First operand 5357 states and 8195 transitions. Second operand 6 states. [2020-10-14 09:00:23,336 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:00:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:24,745 INFO L93 Difference]: Finished difference Result 14151 states and 21726 transitions. [2020-10-14 09:00:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:00:24,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 09:00:24,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:24,924 INFO L225 Difference]: With dead ends: 14151 [2020-10-14 09:00:24,924 INFO L226 Difference]: Without dead ends: 9333 [2020-10-14 09:00:24,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:00:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2020-10-14 09:00:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 7829. [2020-10-14 09:00:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7829 states. [2020-10-14 09:00:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7829 states to 7829 states and 12027 transitions. [2020-10-14 09:00:25,390 INFO L78 Accepts]: Start accepts. Automaton has 7829 states and 12027 transitions. Word has length 118 [2020-10-14 09:00:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:25,390 INFO L479 AbstractCegarLoop]: Abstraction has 7829 states and 12027 transitions. [2020-10-14 09:00:25,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:00:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 7829 states and 12027 transitions. [2020-10-14 09:00:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:00:25,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:25,396 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] [2020-10-14 09:00:25,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:00:25,396 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:25,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:25,397 INFO L82 PathProgramCache]: Analyzing trace with hash -313005205, now seen corresponding path program 1 times [2020-10-14 09:00:25,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:25,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561927742] [2020-10-14 09:00:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:25,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:26,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:30,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:00:30,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:00:30,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:00:30,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:30,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:00:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:00:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 09:00:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:30,703 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:30,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:30,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:30,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:30,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:00:30,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:30,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:30,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:00:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:30,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561927742] [2020-10-14 09:00:30,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:30,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:00:30,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492888404] [2020-10-14 09:00:30,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:00:30,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:30,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:00:30,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:30,752 INFO L87 Difference]: Start difference. First operand 7829 states and 12027 transitions. Second operand 6 states. [2020-10-14 09:00:30,998 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:00:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:32,631 INFO L93 Difference]: Finished difference Result 22667 states and 34838 transitions. [2020-10-14 09:00:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:00:32,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 09:00:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:32,664 INFO L225 Difference]: With dead ends: 22667 [2020-10-14 09:00:32,664 INFO L226 Difference]: Without dead ends: 15377 [2020-10-14 09:00:32,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 09:00:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15377 states. [2020-10-14 09:00:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15377 to 13021. [2020-10-14 09:00:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13021 states. [2020-10-14 09:00:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13021 states to 13021 states and 20059 transitions. [2020-10-14 09:00:33,408 INFO L78 Accepts]: Start accepts. Automaton has 13021 states and 20059 transitions. Word has length 118 [2020-10-14 09:00:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:33,408 INFO L479 AbstractCegarLoop]: Abstraction has 13021 states and 20059 transitions. [2020-10-14 09:00:33,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:00:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 13021 states and 20059 transitions. [2020-10-14 09:00:33,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:00:33,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:33,415 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] [2020-10-14 09:00:33,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:00:33,415 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:33,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:33,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1122403883, now seen corresponding path program 1 times [2020-10-14 09:00:33,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:33,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060884323] [2020-10-14 09:00:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:33,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:33,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:33,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:33,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:34,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:37,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:38,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:38,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:00:38,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:00:38,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:00:38,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:38,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:00:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 09:00:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 09:00:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:38,672 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:38,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:38,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:38,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:38,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:00:38,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:38,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:38,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060884323] [2020-10-14 09:00:38,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:38,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:00:38,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495623407] [2020-10-14 09:00:38,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:00:38,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:38,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:00:38,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:00:38,719 INFO L87 Difference]: Start difference. First operand 13021 states and 20059 transitions. Second operand 6 states. [2020-10-14 09:00:38,957 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:00:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:40,434 INFO L93 Difference]: Finished difference Result 30515 states and 46926 transitions. [2020-10-14 09:00:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:00:40,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 09:00:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:40,479 INFO L225 Difference]: With dead ends: 30515 [2020-10-14 09:00:40,479 INFO L226 Difference]: Without dead ends: 18281 [2020-10-14 09:00:40,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 09:00:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18281 states. [2020-10-14 09:00:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18281 to 15509. [2020-10-14 09:00:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15509 states. [2020-10-14 09:00:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15509 states to 15509 states and 23907 transitions. [2020-10-14 09:00:41,690 INFO L78 Accepts]: Start accepts. Automaton has 15509 states and 23907 transitions. Word has length 118 [2020-10-14 09:00:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:41,691 INFO L479 AbstractCegarLoop]: Abstraction has 15509 states and 23907 transitions. [2020-10-14 09:00:41,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:00:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 15509 states and 23907 transitions. [2020-10-14 09:00:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:00:41,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:41,696 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] [2020-10-14 09:00:41,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:00:41,696 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:41,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:41,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1589233112, now seen corresponding path program 1 times [2020-10-14 09:00:41,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:41,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476366460] [2020-10-14 09:00:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:41,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:41,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:46,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:46,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:00:46,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:00:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:00:46,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:46,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 09:00:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:00:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:46,943 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:46,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:46,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:46,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:46,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:00:46,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:46,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:46,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:46,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:46,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:46,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:46,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476366460] [2020-10-14 09:00:46,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:46,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:00:46,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085823565] [2020-10-14 09:00:46,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:00:46,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:46,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:00:46,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:00:46,980 INFO L87 Difference]: Start difference. First operand 15509 states and 23907 transitions. Second operand 4 states. [2020-10-14 09:00:47,187 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:00:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:48,699 INFO L93 Difference]: Finished difference Result 32689 states and 50509 transitions. [2020-10-14 09:00:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:00:48,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-14 09:00:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:48,730 INFO L225 Difference]: With dead ends: 32689 [2020-10-14 09:00:48,730 INFO L226 Difference]: Without dead ends: 17983 [2020-10-14 09:00:48,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:00:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17983 states. [2020-10-14 09:00:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17983 to 17981. [2020-10-14 09:00:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17981 states. [2020-10-14 09:00:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17981 states to 17981 states and 27675 transitions. [2020-10-14 09:00:50,511 INFO L78 Accepts]: Start accepts. Automaton has 17981 states and 27675 transitions. Word has length 118 [2020-10-14 09:00:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:50,512 INFO L479 AbstractCegarLoop]: Abstraction has 17981 states and 27675 transitions. [2020-10-14 09:00:50,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:00:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 17981 states and 27675 transitions. [2020-10-14 09:00:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:00:50,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:50,517 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] [2020-10-14 09:00:50,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:00:50,518 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:50,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1346108761, now seen corresponding path program 1 times [2020-10-14 09:00:50,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:50,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575602373] [2020-10-14 09:00:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:55,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:55,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:00:55,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:00:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:00:55,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:55,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 09:00:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:00:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:55,814 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:00:55,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:55,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:55,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:55,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:55,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:00:55,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:55,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:55,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:55,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575602373] [2020-10-14 09:00:55,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:55,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:00:55,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398051814] [2020-10-14 09:00:55,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:00:55,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:55,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:00:55,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:00:55,859 INFO L87 Difference]: Start difference. First operand 17981 states and 27675 transitions. Second operand 4 states. [2020-10-14 09:00:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:58,584 INFO L93 Difference]: Finished difference Result 50897 states and 78157 transitions. [2020-10-14 09:00:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:00:58,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-14 09:00:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:58,643 INFO L225 Difference]: With dead ends: 50897 [2020-10-14 09:00:58,643 INFO L226 Difference]: Without dead ends: 33719 [2020-10-14 09:00:58,682 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 09:00:58,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33719 states. [2020-10-14 09:01:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33719 to 33269. [2020-10-14 09:01:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33269 states. [2020-10-14 09:01:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33269 states to 33269 states and 50563 transitions. [2020-10-14 09:01:00,584 INFO L78 Accepts]: Start accepts. Automaton has 33269 states and 50563 transitions. Word has length 118 [2020-10-14 09:01:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:00,585 INFO L479 AbstractCegarLoop]: Abstraction has 33269 states and 50563 transitions. [2020-10-14 09:01:00,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:01:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 33269 states and 50563 transitions. [2020-10-14 09:01:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:01:00,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:00,590 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] [2020-10-14 09:01:00,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:01:00,590 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:00,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1800522469, now seen corresponding path program 1 times [2020-10-14 09:01:00,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:00,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782296072] [2020-10-14 09:01:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:00,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:00,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:05,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:05,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:01:05,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:01:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:01:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:05,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:01:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 09:01:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:05,979 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:01:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:05,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:05,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:05,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:05,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:01:05,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:05,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:06,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782296072] [2020-10-14 09:01:06,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:06,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:01:06,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37391347] [2020-10-14 09:01:06,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:06,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:06,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:06,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:06,010 INFO L87 Difference]: Start difference. First operand 33269 states and 50563 transitions. Second operand 6 states. [2020-10-14 09:01:06,245 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:01:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:09,391 INFO L93 Difference]: Finished difference Result 76123 states and 115430 transitions. [2020-10-14 09:01:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:09,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 09:01:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:09,444 INFO L225 Difference]: With dead ends: 76123 [2020-10-14 09:01:09,444 INFO L226 Difference]: Without dead ends: 43657 [2020-10-14 09:01:09,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:01:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43657 states. [2020-10-14 09:01:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43657 to 37925. [2020-10-14 09:01:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37925 states. [2020-10-14 09:01:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37925 states to 37925 states and 57651 transitions. [2020-10-14 09:01:11,748 INFO L78 Accepts]: Start accepts. Automaton has 37925 states and 57651 transitions. Word has length 118 [2020-10-14 09:01:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:11,748 INFO L479 AbstractCegarLoop]: Abstraction has 37925 states and 57651 transitions. [2020-10-14 09:01:11,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 37925 states and 57651 transitions. [2020-10-14 09:01:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:01:11,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:11,754 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] [2020-10-14 09:01:11,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:01:11,754 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash -386629976, now seen corresponding path program 1 times [2020-10-14 09:01:11,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:11,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647940856] [2020-10-14 09:01:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:17,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:17,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:01:17,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:01:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5706 [2020-10-14 09:01:17,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:17,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 09:01:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 09:01:17,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:17,704 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:01:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:17,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:17,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:17,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:17,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:01:17,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:17,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:17,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647940856] [2020-10-14 09:01:17,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:17,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:01:17,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389657893] [2020-10-14 09:01:17,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:17,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:17,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:17,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:17,737 INFO L87 Difference]: Start difference. First operand 37925 states and 57651 transitions. Second operand 6 states. [2020-10-14 09:01:17,972 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:01:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:21,531 INFO L93 Difference]: Finished difference Result 86931 states and 131766 transitions. [2020-10-14 09:01:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:21,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 09:01:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:21,585 INFO L225 Difference]: With dead ends: 86931 [2020-10-14 09:01:21,585 INFO L226 Difference]: Without dead ends: 49809 [2020-10-14 09:01:21,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 09:01:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49809 states. [2020-10-14 09:01:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49809 to 42637. [2020-10-14 09:01:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42637 states. [2020-10-14 09:01:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42637 states to 42637 states and 64819 transitions. [2020-10-14 09:01:24,098 INFO L78 Accepts]: Start accepts. Automaton has 42637 states and 64819 transitions. Word has length 118 [2020-10-14 09:01:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:24,098 INFO L479 AbstractCegarLoop]: Abstraction has 42637 states and 64819 transitions. [2020-10-14 09:01:24,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 42637 states and 64819 transitions. [2020-10-14 09:01:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:01:24,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:24,103 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] [2020-10-14 09:01:24,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:01:24,104 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:24,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:24,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1723220991, now seen corresponding path program 1 times [2020-10-14 09:01:24,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:24,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263737986] [2020-10-14 09:01:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:29,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:29,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:01:29,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:01:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:01:29,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:29,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:29,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:29,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:01:29,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:01:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:29,357 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:01:29,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:29,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:29,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:29,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:01:29,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:29,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:01:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:01:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:29,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263737986] [2020-10-14 09:01:29,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:29,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:01:29,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652254929] [2020-10-14 09:01:29,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:29,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:29,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:29,388 INFO L87 Difference]: Start difference. First operand 42637 states and 64819 transitions. Second operand 6 states. [2020-10-14 09:01:29,626 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:01:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:33,636 INFO L93 Difference]: Finished difference Result 99716 states and 151102 transitions. [2020-10-14 09:01:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:33,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 09:01:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:33,706 INFO L225 Difference]: With dead ends: 99716 [2020-10-14 09:01:33,706 INFO L226 Difference]: Without dead ends: 57938 [2020-10-14 09:01:33,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 09:01:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57938 states. [2020-10-14 09:01:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57938 to 47470. [2020-10-14 09:01:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47470 states. [2020-10-14 09:01:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47470 states to 47470 states and 72171 transitions. [2020-10-14 09:01:37,662 INFO L78 Accepts]: Start accepts. Automaton has 47470 states and 72171 transitions. Word has length 118 [2020-10-14 09:01:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:37,662 INFO L479 AbstractCegarLoop]: Abstraction has 47470 states and 72171 transitions. [2020-10-14 09:01:37,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 47470 states and 72171 transitions. [2020-10-14 09:01:37,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 09:01:37,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:37,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:37,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:01:37,671 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:37,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2019677041, now seen corresponding path program 1 times [2020-10-14 09:01:37,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:37,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995873550] [2020-10-14 09:01:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:37,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:37,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:37,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:40,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:42,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:42,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 09:01:42,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:01:42,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:01:42,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:42,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 09:01:42,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:42,937 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:01:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:42,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:42,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:42,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:42,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:01:42,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:42,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:01:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:01:42,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995873550] [2020-10-14 09:01:42,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:42,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:42,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043340284] [2020-10-14 09:01:42,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:42,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:42,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:42,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:42,977 INFO L87 Difference]: Start difference. First operand 47470 states and 72171 transitions. Second operand 6 states. [2020-10-14 09:01:43,203 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:01:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:01:50,467 INFO L93 Difference]: Finished difference Result 141307 states and 214621 transitions. [2020-10-14 09:01:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:01:50,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-14 09:01:50,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:01:50,577 INFO L225 Difference]: With dead ends: 141307 [2020-10-14 09:01:50,577 INFO L226 Difference]: Without dead ends: 93905 [2020-10-14 09:01:50,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:01:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93905 states. [2020-10-14 09:01:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93905 to 93903. [2020-10-14 09:01:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93903 states. [2020-10-14 09:01:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93903 states to 93903 states and 141878 transitions. [2020-10-14 09:01:56,242 INFO L78 Accepts]: Start accepts. Automaton has 93903 states and 141878 transitions. Word has length 119 [2020-10-14 09:01:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:01:56,242 INFO L479 AbstractCegarLoop]: Abstraction has 93903 states and 141878 transitions. [2020-10-14 09:01:56,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:01:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 93903 states and 141878 transitions. [2020-10-14 09:01:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 09:01:56,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:56,252 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] [2020-10-14 09:01:56,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:01:56,253 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1289248195, now seen corresponding path program 1 times [2020-10-14 09:01:56,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:56,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781170697] [2020-10-14 09:01:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:56,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:00,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:01,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:01,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 09:02:01,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:02:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:02:01,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:01,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 09:02:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:01,503 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:02:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:01,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:01,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:01,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:02:01,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:01,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:01,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781170697] [2020-10-14 09:02:01,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:01,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:01,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914888805] [2020-10-14 09:02:01,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:01,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:01,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:01,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:01,543 INFO L87 Difference]: Start difference. First operand 93903 states and 141878 transitions. Second operand 6 states. [2020-10-14 09:02:01,772 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:02:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:05,361 INFO L93 Difference]: Finished difference Result 117041 states and 176983 transitions. [2020-10-14 09:02:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:05,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-14 09:02:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:05,416 INFO L225 Difference]: With dead ends: 117041 [2020-10-14 09:02:05,416 INFO L226 Difference]: Without dead ends: 47158 [2020-10-14 09:02:05,467 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 09:02:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47158 states. [2020-10-14 09:02:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47158 to 23643. [2020-10-14 09:02:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23643 states. [2020-10-14 09:02:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23643 states to 23643 states and 35491 transitions. [2020-10-14 09:02:07,477 INFO L78 Accepts]: Start accepts. Automaton has 23643 states and 35491 transitions. Word has length 120 [2020-10-14 09:02:07,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:07,477 INFO L479 AbstractCegarLoop]: Abstraction has 23643 states and 35491 transitions. [2020-10-14 09:02:07,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23643 states and 35491 transitions. [2020-10-14 09:02:07,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 09:02:07,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:07,480 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] [2020-10-14 09:02:07,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:02:07,480 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:07,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1023549171, now seen corresponding path program 1 times [2020-10-14 09:02:07,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:07,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911328080] [2020-10-14 09:02:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:08,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:12,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 09:02:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:12,733 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:02:12,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:12,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:12,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:12,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:02:12,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:12,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:12,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911328080] [2020-10-14 09:02:12,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:12,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:02:12,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829304290] [2020-10-14 09:02:12,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:12,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:12,765 INFO L87 Difference]: Start difference. First operand 23643 states and 35491 transitions. Second operand 6 states. [2020-10-14 09:02:13,000 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:02:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:16,220 INFO L93 Difference]: Finished difference Result 55404 states and 83006 transitions. [2020-10-14 09:02:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:02:16,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-14 09:02:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:16,255 INFO L225 Difference]: With dead ends: 55404 [2020-10-14 09:02:16,255 INFO L226 Difference]: Without dead ends: 32266 [2020-10-14 09:02:16,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 09:02:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32266 states. [2020-10-14 09:02:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32266 to 26054. [2020-10-14 09:02:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26054 states. [2020-10-14 09:02:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26054 states to 26054 states and 39115 transitions. [2020-10-14 09:02:18,409 INFO L78 Accepts]: Start accepts. Automaton has 26054 states and 39115 transitions. Word has length 120 [2020-10-14 09:02:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:18,409 INFO L479 AbstractCegarLoop]: Abstraction has 26054 states and 39115 transitions. [2020-10-14 09:02:18,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 26054 states and 39115 transitions. [2020-10-14 09:02:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 09:02:18,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:18,413 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] [2020-10-14 09:02:18,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:02:18,413 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash -820381184, now seen corresponding path program 1 times [2020-10-14 09:02:18,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:18,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790229543] [2020-10-14 09:02:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:18,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:23,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:23,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 09:02:23,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:02:23,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:02:23,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:23,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:02:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 09:02:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:02:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:23,680 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:02:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:23,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:23,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:23,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:02:23,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:23,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:23,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790229543] [2020-10-14 09:02:23,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:23,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:02:23,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37771461] [2020-10-14 09:02:23,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:02:23,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:23,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:02:23,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:02:23,705 INFO L87 Difference]: Start difference. First operand 26054 states and 39115 transitions. Second operand 5 states. [2020-10-14 09:02:27,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:27,862 INFO L93 Difference]: Finished difference Result 43256 states and 64860 transitions. [2020-10-14 09:02:27,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:02:27,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 09:02:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:27,919 INFO L225 Difference]: With dead ends: 43256 [2020-10-14 09:02:27,919 INFO L226 Difference]: Without dead ends: 43254 [2020-10-14 09:02:27,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 09:02:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43254 states. [2020-10-14 09:02:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43254 to 26086. [2020-10-14 09:02:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26086 states. [2020-10-14 09:02:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26086 states to 26086 states and 39003 transitions. [2020-10-14 09:02:30,314 INFO L78 Accepts]: Start accepts. Automaton has 26086 states and 39003 transitions. Word has length 121 [2020-10-14 09:02:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:30,314 INFO L479 AbstractCegarLoop]: Abstraction has 26086 states and 39003 transitions. [2020-10-14 09:02:30,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:02:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 26086 states and 39003 transitions. [2020-10-14 09:02:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 09:02:30,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:30,318 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] [2020-10-14 09:02:30,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:02:30,318 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:30,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:30,318 INFO L82 PathProgramCache]: Analyzing trace with hash 467302652, now seen corresponding path program 1 times [2020-10-14 09:02:30,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:30,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527595976] [2020-10-14 09:02:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:30,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:30,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:33,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:33,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:34,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:35,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:02:35,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:35,860 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:02:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:35,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:35,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:35,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:02:35,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:35,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:35,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:35,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527595976] [2020-10-14 09:02:35,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:35,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:02:35,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497974321] [2020-10-14 09:02:35,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:02:35,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:02:35,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:02:35,898 INFO L87 Difference]: Start difference. First operand 26086 states and 39003 transitions. Second operand 9 states. [2020-10-14 09:02:36,173 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 09:02:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:41,957 INFO L93 Difference]: Finished difference Result 64806 states and 96729 transitions. [2020-10-14 09:02:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 09:02:41,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-10-14 09:02:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:42,006 INFO L225 Difference]: With dead ends: 64806 [2020-10-14 09:02:42,006 INFO L226 Difference]: Without dead ends: 39272 [2020-10-14 09:02:42,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 09:02:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39272 states. [2020-10-14 09:02:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39272 to 26086. [2020-10-14 09:02:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26086 states. [2020-10-14 09:02:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26086 states to 26086 states and 38959 transitions. [2020-10-14 09:02:45,042 INFO L78 Accepts]: Start accepts. Automaton has 26086 states and 38959 transitions. Word has length 121 [2020-10-14 09:02:45,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:45,043 INFO L479 AbstractCegarLoop]: Abstraction has 26086 states and 38959 transitions. [2020-10-14 09:02:45,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:02:45,043 INFO L276 IsEmpty]: Start isEmpty. Operand 26086 states and 38959 transitions. [2020-10-14 09:02:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:02:45,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:45,046 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] [2020-10-14 09:02:45,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:02:45,047 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:45,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:45,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1554227954, now seen corresponding path program 1 times [2020-10-14 09:02:45,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:45,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443610785] [2020-10-14 09:02:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:45,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:46,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:46,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:47,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:49,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:49,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:50,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:50,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:02:50,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:02:50,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:02:50,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:50,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:50,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 09:02:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:02:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 09:02:50,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:50,576 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:02:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:50,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:50,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:50,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:02:50,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:50,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:02:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:02:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:50,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443610785] [2020-10-14 09:02:50,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:50,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:02:50,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938654423] [2020-10-14 09:02:50,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 09:02:50,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:50,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 09:02:50,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:02:50,644 INFO L87 Difference]: Start difference. First operand 26086 states and 38959 transitions. Second operand 11 states. [2020-10-14 09:02:50,924 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-14 09:03:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:00,082 INFO L93 Difference]: Finished difference Result 90220 states and 134810 transitions. [2020-10-14 09:03:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 09:03:00,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 122 [2020-10-14 09:03:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:00,164 INFO L225 Difference]: With dead ends: 90220 [2020-10-14 09:03:00,165 INFO L226 Difference]: Without dead ends: 64586 [2020-10-14 09:03:00,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-10-14 09:03:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64586 states. [2020-10-14 09:03:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64586 to 26086. [2020-10-14 09:03:03,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26086 states. [2020-10-14 09:03:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26086 states to 26086 states and 38939 transitions. [2020-10-14 09:03:03,987 INFO L78 Accepts]: Start accepts. Automaton has 26086 states and 38939 transitions. Word has length 122 [2020-10-14 09:03:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:03,987 INFO L479 AbstractCegarLoop]: Abstraction has 26086 states and 38939 transitions. [2020-10-14 09:03:03,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 09:03:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 26086 states and 38939 transitions. [2020-10-14 09:03:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:03:03,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:03,991 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] [2020-10-14 09:03:03,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 09:03:03,991 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:03,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1502696646, now seen corresponding path program 1 times [2020-10-14 09:03:03,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:03,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296132981] [2020-10-14 09:03:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:04,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:04,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:09,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:03:09,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:03:09,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:03:09,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:09,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:03:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:03:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 09:03:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:09,538 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:03:09,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:09,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:09,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:09,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:03:09,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:09,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:09,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:09,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296132981] [2020-10-14 09:03:09,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:09,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:03:09,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490249393] [2020-10-14 09:03:09,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:03:09,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:09,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:03:09,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:09,594 INFO L87 Difference]: Start difference. First operand 26086 states and 38939 transitions. Second operand 10 states. [2020-10-14 09:03:09,859 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 182