/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/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:50:06,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:50:06,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:50:06,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:50:06,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:50:06,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:50:06,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:50:06,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:50:06,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:50:06,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:50:06,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:50:06,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:50:06,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:50:06,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:50:06,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:50:06,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:50:06,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:50:06,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:50:06,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:50:06,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:50:06,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:50:06,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:50:06,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:50:06,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:50:06,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:50:06,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:50:06,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:50:06,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:50:06,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:50:06,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:50:06,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:50:06,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:50:06,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:50:06,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:50:06,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:50:06,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:50:06,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:50:06,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:50:06,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:50:06,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:50:06,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:50:06,273 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 07:50:06,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:50:06,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:50:06,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:50:06,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:50:06,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:50:06,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:50:06,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:50:06,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:50:06,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:50:06,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:50:06,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:50:06,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:50:06,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:50:06,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:50:06,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:50:06,316 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:50:06,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:50:06,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:50:06,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:50:06,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:50:06,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:50:06,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:50:06,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:50:06,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:50:06,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:50:06,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:50:06,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:50:06,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:50:06,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:50:06,319 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 07:50:06,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:50:06,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:50:06,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:50:06,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:50:06,631 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:50:06,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-14 07:50:06,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8450defa7/5dea70fefd6244e0861769910f16f469/FLAG22878ba31 [2020-10-14 07:50:07,292 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:50:07,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-14 07:50:07,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8450defa7/5dea70fefd6244e0861769910f16f469/FLAG22878ba31 [2020-10-14 07:50:07,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8450defa7/5dea70fefd6244e0861769910f16f469 [2020-10-14 07:50:07,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:50:07,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:50:07,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:50:07,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:50:07,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:50:07,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:07" (1/1) ... [2020-10-14 07:50:07,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc7108f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:07, skipping insertion in model container [2020-10-14 07:50:07,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:07" (1/1) ... [2020-10-14 07:50:07,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:50:07,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:50:08,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:50:08,217 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:50:08,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:50:08,365 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:50:08,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08 WrapperNode [2020-10-14 07:50:08,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:50:08,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:50:08,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:50:08,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:50:08,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (1/1) ... [2020-10-14 07:50:08,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (1/1) ... [2020-10-14 07:50:08,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (1/1) ... [2020-10-14 07:50:08,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (1/1) ... [2020-10-14 07:50:08,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (1/1) ... [2020-10-14 07:50:08,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (1/1) ... [2020-10-14 07:50:08,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (1/1) ... [2020-10-14 07:50:08,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:50:08,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:50:08,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:50:08,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:50:08,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (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 07:50:08,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:50:08,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:50:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 07:50:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-14 07:50:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-14 07:50:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-14 07:50:08,633 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-14 07:50:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-14 07:50:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-14 07:50:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-14 07:50:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:50:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-14 07:50:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:50:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 07:50:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 07:50:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 07:50:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 07:50:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 07:50:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 07:50:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 07:50:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 07:50:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 07:50:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 07:50:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 07:50:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 07:50:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 07:50:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 07:50:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 07:50:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:50:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:50:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:50:10,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:50:10,727 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 07:50:10,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:10 BoogieIcfgContainer [2020-10-14 07:50:10,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:50:10,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:50:10,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:50:10,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:50:10,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:50:07" (1/3) ... [2020-10-14 07:50:10,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d3b0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:10, skipping insertion in model container [2020-10-14 07:50:10,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:08" (2/3) ... [2020-10-14 07:50:10,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d3b0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:10, skipping insertion in model container [2020-10-14 07:50:10,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:10" (3/3) ... [2020-10-14 07:50:10,743 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-14 07:50:10,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:50:10,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:50:10,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:50:10,804 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:50:10,804 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:50:10,804 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:50:10,804 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:50:10,804 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:50:10,805 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:50:10,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:50:10,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:50:10,836 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states. [2020-10-14 07:50:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 07:50:10,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:50:10,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:50:10,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:50:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:50:10,869 INFO L82 PathProgramCache]: Analyzing trace with hash 906450296, now seen corresponding path program 1 times [2020-10-14 07:50:10,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:50:10,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98510640] [2020-10-14 07:50:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:50:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:12,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:12,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 07:50:12,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-14 07:50:12,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:12,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-14 07:50:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:50:13,351 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-14 07:50:13,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:50:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:13,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:13,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:50:13,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:50:13,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:13,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:13,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:13,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:50:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:13,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:13,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:13,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 07:50:13,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 07:50:13,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:13,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 07:50:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:13,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:13,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:13,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:50:13,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:50:13,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:13,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:50:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:13,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-14 07:50:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:13,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:13,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:13,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:13,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:50:13,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:13,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 07:50:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:13,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:13,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:13,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:50:13,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:13,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 07:50:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:13,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:13,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:13,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:13,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:13,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:50:13,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:13,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:13,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:13,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 07:50:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:13,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:13,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:13,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:13,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:50:13,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:13,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:13,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:13,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:13,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:13,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:13,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 07:50:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:13,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:13,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:14,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:50:14,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:14,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:50:14,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 07:50:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:14,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:14,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:14,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:14,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:50:14,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:14,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:14,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:14,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:14,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:14,110 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 07:50:14,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98510640] [2020-10-14 07:50:14,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:50:14,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 07:50:14,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996227085] [2020-10-14 07:50:14,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:50:14,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:50:14,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:50:14,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:50:14,143 INFO L87 Difference]: Start difference. First operand 747 states. Second operand 8 states. [2020-10-14 07:50:16,864 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:17,399 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:17,975 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:18,549 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:19,079 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:50:19,879 INFO L93 Difference]: Finished difference Result 989 states and 1744 transitions. [2020-10-14 07:50:19,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:50:19,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-10-14 07:50:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:50:19,904 INFO L225 Difference]: With dead ends: 989 [2020-10-14 07:50:19,904 INFO L226 Difference]: Without dead ends: 797 [2020-10-14 07:50:19,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:50:19,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-10-14 07:50:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 742. [2020-10-14 07:50:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-10-14 07:50:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1341 transitions. [2020-10-14 07:50:20,103 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1341 transitions. Word has length 182 [2020-10-14 07:50:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:50:20,104 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 1341 transitions. [2020-10-14 07:50:20,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:50:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1341 transitions. [2020-10-14 07:50:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 07:50:20,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:50:20,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:50:20,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:50:20,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:50:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:50:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash 553361914, now seen corresponding path program 1 times [2020-10-14 07:50:20,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:50:20,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398879608] [2020-10-14 07:50:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:50:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:23,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:23,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 07:50:23,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2886 [2020-10-14 07:50:23,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:23,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:50:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 07:50:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:50:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:23,968 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-14 07:50:23,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:50:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:50:24,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:50:24,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:24,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:24,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:50:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:24,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 07:50:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-14 07:50:24,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:24,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:50:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 07:50:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:50:24,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 07:50:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:24,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:50:24,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:50:24,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:24,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:50:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:50:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:50:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-14 07:50:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:24,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:24,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:24,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:50:24,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:24,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:50:24,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 07:50:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:24,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:24,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:24,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:24,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:50:24,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:24,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 07:50:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:25,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:25,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:25,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:50:25,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:25,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:25,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 07:50:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:25,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:25,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:25,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:25,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:25,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:50:25,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:25,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 07:50:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:25,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:25,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:25,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:50:25,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:25,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 07:50:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:25,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:25,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:25,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:50:25,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:25,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:50:25,226 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 07:50:25,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398879608] [2020-10-14 07:50:25,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:50:25,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-14 07:50:25,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450934889] [2020-10-14 07:50:25,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:50:25,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:50:25,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:50:25,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:50:25,232 INFO L87 Difference]: Start difference. First operand 742 states and 1341 transitions. Second operand 14 states. [2020-10-14 07:50:32,653 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-14 07:50:33,297 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2020-10-14 07:50:34,099 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-14 07:50:34,705 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:50:35,726 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:36,324 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:37,025 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:37,744 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:38,418 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:50:39,276 INFO L93 Difference]: Finished difference Result 987 states and 1736 transitions. [2020-10-14 07:50:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:50:39,277 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 182 [2020-10-14 07:50:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:50:39,284 INFO L225 Difference]: With dead ends: 987 [2020-10-14 07:50:39,284 INFO L226 Difference]: Without dead ends: 797 [2020-10-14 07:50:39,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:50:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-10-14 07:50:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 742. [2020-10-14 07:50:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-10-14 07:50:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1281 transitions. [2020-10-14 07:50:39,445 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1281 transitions. Word has length 182 [2020-10-14 07:50:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:50:39,445 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 1281 transitions. [2020-10-14 07:50:39,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:50:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1281 transitions. [2020-10-14 07:50:39,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 07:50:39,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:50:39,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:50:39,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:50:39,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:50:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:50:39,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1577718157, now seen corresponding path program 1 times [2020-10-14 07:50:39,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:50:39,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658060357] [2020-10-14 07:50:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:50:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:44,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:44,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 07:50:44,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:50:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-14 07:50:44,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:44,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:50:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 07:50:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 07:50:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:45,460 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-14 07:50:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:50:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:50:45,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:45,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:50:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:45,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:50:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:50:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:45,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:45,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 07:50:45,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:45,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-14 07:50:45,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:45,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:50:45,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:45,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 07:50:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:50:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 07:50:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:46,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:46,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:46,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:50:46,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:46,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:50:46,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:46,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:46,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:50:46,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:46,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:50:46,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:50:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-14 07:50:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:46,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:46,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:46,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:50:46,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:46,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:50:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:50:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 07:50:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:46,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:46,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:46,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:50:46,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:46,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:50:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:50:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:50:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:46,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 07:50:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:46,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:50:46,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:46,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:50:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 07:50:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:50:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:50:46,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-14 07:50:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:46,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:46,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:50:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:46,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:50:46,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-14 07:50:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:46,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:46,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:46,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:46,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:50:46,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:46,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-14 07:50:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:46,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:50:46,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:50:46,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:50:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:50:46,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:50:46,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:50:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:50:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:50:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:50:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:50:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:50:46,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658060357] [2020-10-14 07:50:46,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:50:46,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 07:50:46,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207714895] [2020-10-14 07:50:46,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:50:46,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:50:46,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:50:46,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:50:46,542 INFO L87 Difference]: Start difference. First operand 742 states and 1281 transitions. Second operand 11 states. [2020-10-14 07:50:47,159 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-14 07:50:53,063 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 07:50:53,523 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 07:50:54,066 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:54,332 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:50:54,770 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 07:50:55,002 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:55,597 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 07:50:55,945 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:57,136 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:57,593 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:50:58,031 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 07:50:58,633 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-14 07:50:58,872 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-14 07:50:59,112 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 07:50:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:50:59,268 INFO L93 Difference]: Finished difference Result 1226 states and 2065 transitions. [2020-10-14 07:50:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:50:59,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 241 [2020-10-14 07:50:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:50:59,278 INFO L225 Difference]: With dead ends: 1226 [2020-10-14 07:50:59,279 INFO L226 Difference]: Without dead ends: 1042 [2020-10-14 07:50:59,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-14 07:50:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-10-14 07:50:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 926. [2020-10-14 07:50:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-10-14 07:50:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1584 transitions. [2020-10-14 07:50:59,447 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1584 transitions. Word has length 241 [2020-10-14 07:50:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:50:59,448 INFO L479 AbstractCegarLoop]: Abstraction has 926 states and 1584 transitions. [2020-10-14 07:50:59,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:50:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1584 transitions. [2020-10-14 07:50:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 07:50:59,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:50:59,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:50:59,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:50:59,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:50:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:50:59,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2077827313, now seen corresponding path program 1 times [2020-10-14 07:50:59,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:50:59,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115025375] [2020-10-14 07:50:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:50:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:50:59,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:50:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:01,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:04,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:04,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 07:51:04,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:51:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 07:51:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:04,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:51:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:51:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-14 07:51:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:05,617 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-14 07:51:05,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:51:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:51:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:51:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:05,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:51:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:51:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:05,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:51:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:06,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 07:51:06,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-14 07:51:06,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:06,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:51:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 07:51:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:06,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 07:51:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:06,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:06,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:51:06,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:06,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:51:06,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:06,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:06,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:51:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:51:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:06,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-14 07:51:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:06,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:06,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:06,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:51:06,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:06,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:51:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:06,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:51:06,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 07:51:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:06,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:06,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:06,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:06,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:51:06,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:06,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:51:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:51:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 07:51:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:06,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:06,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:51:06,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:06,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:51:06,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:06,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:51:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:51:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:51:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 07:51:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:06,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:06,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:06,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:51:06,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:06,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:51:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:51:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:51:06,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:06,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-14 07:51:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:06,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:06,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:06,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:06,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:51:06,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:06,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:51:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:51:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:51:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:06,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-14 07:51:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:07,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:51:07,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:07,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:51:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:51:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:51:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:51:07,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115025375] [2020-10-14 07:51:07,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:51:07,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 07:51:07,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586621115] [2020-10-14 07:51:07,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:51:07,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:51:07,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:51:07,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:51:07,152 INFO L87 Difference]: Start difference. First operand 926 states and 1584 transitions. Second operand 11 states. [2020-10-14 07:51:07,802 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-14 07:51:08,390 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-14 07:51:09,353 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-14 07:51:09,965 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:51:20,220 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:51:20,613 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:20,934 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:21,584 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:22,136 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:22,995 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:23,526 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:24,385 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:24,658 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:25,591 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:25,875 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:51:27,367 INFO L93 Difference]: Finished difference Result 2923 states and 4977 transitions. [2020-10-14 07:51:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 07:51:27,368 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 245 [2020-10-14 07:51:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:51:27,381 INFO L225 Difference]: With dead ends: 2923 [2020-10-14 07:51:27,381 INFO L226 Difference]: Without dead ends: 2066 [2020-10-14 07:51:27,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-14 07:51:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-10-14 07:51:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1853. [2020-10-14 07:51:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1853 states. [2020-10-14 07:51:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 3146 transitions. [2020-10-14 07:51:27,650 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 3146 transitions. Word has length 245 [2020-10-14 07:51:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:51:27,650 INFO L479 AbstractCegarLoop]: Abstraction has 1853 states and 3146 transitions. [2020-10-14 07:51:27,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:51:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 3146 transitions. [2020-10-14 07:51:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 07:51:27,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:51:27,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:51:27,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:51:27,658 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:51:27,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:51:27,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1999103719, now seen corresponding path program 1 times [2020-10-14 07:51:27,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:51:27,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851423313] [2020-10-14 07:51:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:51:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:32,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:32,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 07:51:32,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 07:51:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-14 07:51:32,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:32,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:51:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:51:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-14 07:51:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:33,865 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-14 07:51:33,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:51:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:33,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:33,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:51:33,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:51:33,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:33,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:51:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:51:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:51:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:34,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:34,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 07:51:34,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-14 07:51:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:34,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:51:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 07:51:34,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:34,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 07:51:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:34,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:34,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:34,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:51:34,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:34,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:51:34,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:34,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:34,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:51:34,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:34,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:51:34,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-14 07:51:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:34,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:34,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:51:34,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:34,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:51:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:51:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:34,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 07:51:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:34,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:34,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:34,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:34,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:51:34,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:34,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:51:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:51:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:51:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 07:51:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:34,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:34,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:51:34,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:51:34,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:34,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:51:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 07:51:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:51:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:51:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-14 07:51:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:34,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:34,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:34,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:51:34,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:34,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:51:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:51:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:51:34,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-14 07:51:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:34,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:34,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:34,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:51:34,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:34,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:51:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:51:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:51:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:34,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 07:51:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:34,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:51:34,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:51:34,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:51:34,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:51:34,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:51:34,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:51:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:51:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:51:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:51:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:51:35,055 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 07:51:35,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851423313] [2020-10-14 07:51:35,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:51:35,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 07:51:35,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160257244] [2020-10-14 07:51:35,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:51:35,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:51:35,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:51:35,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:51:35,059 INFO L87 Difference]: Start difference. First operand 1853 states and 3146 transitions. Second operand 11 states. [2020-10-14 07:51:35,717 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-14 07:51:36,343 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-14 07:51:37,181 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-14 07:51:37,804 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:51:49,502 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:51:49,928 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:50,263 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:50,958 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:51,524 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:52,398 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:52,913 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:53,868 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:54,190 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:54,884 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:51:55,450 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:51:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:51:56,890 INFO L93 Difference]: Finished difference Result 6099 states and 10330 transitions. [2020-10-14 07:51:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 07:51:56,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-14 07:51:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:51:56,909 INFO L225 Difference]: With dead ends: 6099 [2020-10-14 07:51:56,910 INFO L226 Difference]: Without dead ends: 4335 [2020-10-14 07:51:56,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-14 07:51:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2020-10-14 07:51:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 3931. [2020-10-14 07:51:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3931 states. [2020-10-14 07:51:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 6640 transitions. [2020-10-14 07:51:57,543 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 6640 transitions. Word has length 247 [2020-10-14 07:51:57,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:51:57,544 INFO L479 AbstractCegarLoop]: Abstraction has 3931 states and 6640 transitions. [2020-10-14 07:51:57,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:51:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 6640 transitions. [2020-10-14 07:51:57,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 07:51:57,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:51:57,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:51:57,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:51:57,557 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:51:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:51:57,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2060223274, now seen corresponding path program 1 times [2020-10-14 07:51:57,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:51:57,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644477523] [2020-10-14 07:51:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:51:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:51:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:59,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:51:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:02,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:02,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 07:52:02,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:52:02,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 07:52:02,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:02,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:52:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:52:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 07:52:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:03,371 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-14 07:52:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:52:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:03,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:03,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:03,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:52:03,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 07:52:03,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:03,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:52:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:52:03,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:52:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:03,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:03,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 07:52:03,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-14 07:52:03,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:03,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:52:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:52:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 07:52:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:03,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:52:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:52:03,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:03,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:52:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:52:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:04,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-14 07:52:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:04,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:04,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:52:04,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:04,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:52:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:52:04,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:52:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 07:52:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:04,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:04,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:04,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:52:04,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:04,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:52:04,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:04,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:52:04,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:52:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 07:52:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:04,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:04,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:52:04,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:52:04,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:04,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:52:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:52:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:52:04,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:04,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-14 07:52:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:04,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:04,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:04,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:04,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:52:04,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:04,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:52:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:52:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:52:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:04,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-14 07:52:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:04,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:04,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:04,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:52:04,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:04,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:52:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:52:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:52:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 07:52:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:04,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:04,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:04,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:52:04,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:04,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:52:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:52:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:52:04,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:04,400 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 07:52:04,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644477523] [2020-10-14 07:52:04,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:52:04,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 07:52:04,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563528995] [2020-10-14 07:52:04,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:52:04,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:52:04,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:52:04,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:52:04,403 INFO L87 Difference]: Start difference. First operand 3931 states and 6640 transitions. Second operand 11 states. [2020-10-14 07:52:05,044 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-14 07:52:05,714 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2020-10-14 07:52:06,693 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-14 07:52:07,949 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 367 DAG size of output: 363 [2020-10-14 07:52:24,845 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:52:25,256 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:52:25,669 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:52:26,270 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:52:26,542 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:52:27,061 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:52:27,898 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:52:28,343 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:52:28,826 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:52:29,456 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:52:30,102 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:52:30,410 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:52:30,675 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:52:31,368 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:52:31,777 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:52:32,053 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:52:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:52:33,608 INFO L93 Difference]: Finished difference Result 15937 states and 26794 transitions. [2020-10-14 07:52:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 07:52:33,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-14 07:52:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:52:33,662 INFO L225 Difference]: With dead ends: 15937 [2020-10-14 07:52:33,662 INFO L226 Difference]: Without dead ends: 12281 [2020-10-14 07:52:33,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-14 07:52:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12281 states. [2020-10-14 07:52:34,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12281 to 11221. [2020-10-14 07:52:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11221 states. [2020-10-14 07:52:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11221 states to 11221 states and 18872 transitions. [2020-10-14 07:52:35,031 INFO L78 Accepts]: Start accepts. Automaton has 11221 states and 18872 transitions. Word has length 247 [2020-10-14 07:52:35,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:52:35,032 INFO L479 AbstractCegarLoop]: Abstraction has 11221 states and 18872 transitions. [2020-10-14 07:52:35,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:52:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 11221 states and 18872 transitions. [2020-10-14 07:52:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 07:52:35,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:52:35,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:52:35,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:52:35,058 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:52:35,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:52:35,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1675271417, now seen corresponding path program 1 times [2020-10-14 07:52:35,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:52:35,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403149145] [2020-10-14 07:52:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:52:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:37,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:40,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:40,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 07:52:40,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 07:52:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 07:52:40,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:40,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:52:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:52:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-14 07:52:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:41,618 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-14 07:52:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:52:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:41,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:41,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:52:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 07:52:41,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:41,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:52:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:52:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:52:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:42,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:42,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 07:52:42,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:42,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 07:52:42,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:42,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:52:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 07:52:42,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 07:52:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:42,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:42,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:52:42,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:42,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:52:42,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:42,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:42,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:52:42,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:42,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:52:42,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-14 07:52:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:42,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:42,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:42,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:42,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:42,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:52:42,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:42,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:52:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:52:42,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 07:52:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:42,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:42,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:42,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:42,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:52:42,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:42,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:52:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:52:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:52:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:42,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 07:52:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:42,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:42,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:42,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 07:52:42,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:42,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:52:42,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:42,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:52:42,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:52:42,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:52:42,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:42,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 07:52:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:42,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:42,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:42,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:52:42,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:42,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:52:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:52:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:52:42,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:42,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-14 07:52:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:42,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:42,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:42,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:52:42,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:42,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:52:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:52:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:52:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-14 07:52:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:52:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:52:42,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:52:42,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:52:42,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:52:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:52:42,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:52:42,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:52:42,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:52:42,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:52:42,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:52:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:52:42,586 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 07:52:42,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403149145] [2020-10-14 07:52:42,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:52:42,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 07:52:42,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704763104] [2020-10-14 07:52:42,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:52:42,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:52:42,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:52:42,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:52:42,588 INFO L87 Difference]: Start difference. First operand 11221 states and 18872 transitions. Second operand 11 states. [2020-10-14 07:52:43,266 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-14 07:52:43,965 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2020-10-14 07:52:44,840 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-14 07:52:46,155 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 367 DAG size of output: 363 [2020-10-14 07:53:06,681 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:53:07,165 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:53:07,483 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:53:08,203 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:53:08,514 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:53:09,076 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:53:10,093 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:53:10,626 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:53:11,095 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:53:11,819 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:53:12,845 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:53:13,132 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:53:13,447 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:53:14,332 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:53:14,663 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:53:15,063 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 07:53:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:53:17,057 INFO L93 Difference]: Finished difference Result 43967 states and 73661 transitions. [2020-10-14 07:53:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 07:53:17,065 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2020-10-14 07:53:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:53:17,297 INFO L225 Difference]: With dead ends: 43967 [2020-10-14 07:53:17,297 INFO L226 Difference]: Without dead ends: 33303 [2020-10-14 07:53:17,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-14 07:53:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33303 states. [2020-10-14 07:53:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33303 to 30849. [2020-10-14 07:53:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30849 states. [2020-10-14 07:53:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30849 states to 30849 states and 51632 transitions. [2020-10-14 07:53:21,722 INFO L78 Accepts]: Start accepts. Automaton has 30849 states and 51632 transitions. Word has length 248 [2020-10-14 07:53:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:53:21,723 INFO L479 AbstractCegarLoop]: Abstraction has 30849 states and 51632 transitions. [2020-10-14 07:53:21,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:53:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 30849 states and 51632 transitions. [2020-10-14 07:53:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 07:53:21,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:53:21,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:53:21,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:53:21,768 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:53:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:53:21,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1180126275, now seen corresponding path program 1 times [2020-10-14 07:53:21,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:53:21,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517877383] [2020-10-14 07:53:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:53:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:22,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:26,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:26,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 07:53:26,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 07:53:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 07:53:26,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:26,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:53:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:53:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 07:53:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:27,539 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-14 07:53:27,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:53:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:27,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:27,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:27,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:53:27,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:27,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:53:27,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:27,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:53:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:53:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:53:27,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:27,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:53:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:27,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:27,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 07:53:27,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 07:53:27,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:27,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:53:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:53:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 07:53:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 07:53:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:28,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:28,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:53:28,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:53:28,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:28,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:53:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:53:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:53:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-14 07:53:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:28,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:28,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:53:28,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:53:28,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:28,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:53:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:53:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:53:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 07:53:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:28,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:28,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:53:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:53:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:28,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:53:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:53:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:53:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 07:53:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:28,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:28,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:28,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:53:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:28,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-14 07:53:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:28,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:28,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:53:28,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:28,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:53:28,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:28,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:53:28,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:53:28,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:53:28,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-14 07:53:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:28,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:28,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:53:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:53:28,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:28,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:53:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:53:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:53:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-14 07:53:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:53:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:53:28,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:53:28,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:53:28,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:53:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:53:28,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:53:28,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:53:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:53:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:53:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:53:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:53:28,566 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 07:53:28,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517877383] [2020-10-14 07:53:28,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:53:28,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 07:53:28,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444316657] [2020-10-14 07:53:28,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:53:28,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:53:28,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:53:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:53:28,567 INFO L87 Difference]: Start difference. First operand 30849 states and 51632 transitions. Second operand 11 states. [2020-10-14 07:53:29,269 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-14 07:53:29,901 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-14 07:53:30,689 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-14 07:53:31,357 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:53:51,190 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2020-10-14 07:53:51,666 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:53:52,039 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:53:52,776 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:53:53,403 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-14 07:53:54,285 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 07:53:54,850 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 174