/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:25:01,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:25:01,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:25:01,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:25:01,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:25:01,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:25:01,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:25:01,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:25:01,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:25:01,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:25:01,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:25:01,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:25:01,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:25:01,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:25:01,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:25:01,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:25:01,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:25:01,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:25:01,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:25:01,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:25:01,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:25:01,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:25:01,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:25:01,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:25:01,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:25:01,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:25:01,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:25:01,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:25:01,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:25:01,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:25:01,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:25:01,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:25:01,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:25:01,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:25:01,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:25:01,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:25:01,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:25:01,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:25:01,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:25:01,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:25:01,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:25:01,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:25:01,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:25:01,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:25:01,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:25:01,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:25:01,305 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:25:01,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:25:01,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:25:01,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:25:01,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:25:01,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:25:01,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:25:01,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:25:01,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:25:01,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:25:01,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:25:01,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:25:01,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:25:01,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:25:01,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:25:01,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:25:01,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:25:01,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:25:01,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:25:01,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:25:01,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:25:01,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:25:01,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:25:01,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:25:01,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:25:01,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:25:01,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:25:01,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:25:01,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:25:01,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:25:01,642 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:25:01,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:25:01,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e9fa0b2a/bd956700a34d4da79ef5f8f594238062/FLAGfbad46e87 [2020-10-14 08:25:02,241 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:25:02,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:25:02,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e9fa0b2a/bd956700a34d4da79ef5f8f594238062/FLAGfbad46e87 [2020-10-14 08:25:02,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e9fa0b2a/bd956700a34d4da79ef5f8f594238062 [2020-10-14 08:25:02,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:25:02,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:25:02,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:25:02,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:25:02,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:25:02,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16febf07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:02, skipping insertion in model container [2020-10-14 08:25:02,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:25:02" (1/1) ... [2020-10-14 08:25:02,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:25:02,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:25:03,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:25:03,341 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:25:03,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:25:03,603 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:25:03,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03 WrapperNode [2020-10-14 08:25:03,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:25:03,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:25:03,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:25:03,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:25:03,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (1/1) ... [2020-10-14 08:25:03,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (1/1) ... [2020-10-14 08:25:03,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (1/1) ... [2020-10-14 08:25:03,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (1/1) ... [2020-10-14 08:25:03,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (1/1) ... [2020-10-14 08:25:03,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (1/1) ... [2020-10-14 08:25:03,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (1/1) ... [2020-10-14 08:25:03,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:25:03,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:25:03,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:25:03,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:25:03,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:25:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:25:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:25:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:25:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:25:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:25:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:25:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:25:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:25:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:25:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:25:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:25:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:25:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:25:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:25:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:25:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:25:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:25:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:25:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:25:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:25:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:25:05,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:25:05,275 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:25:05,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:25:05 BoogieIcfgContainer [2020-10-14 08:25:05,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:25:05,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:25:05,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:25:05,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:25:05,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:25:02" (1/3) ... [2020-10-14 08:25:05,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba0ea6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:25:05, skipping insertion in model container [2020-10-14 08:25:05,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:25:03" (2/3) ... [2020-10-14 08:25:05,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba0ea6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:25:05, skipping insertion in model container [2020-10-14 08:25:05,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:25:05" (3/3) ... [2020-10-14 08:25:05,290 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:25:05,301 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:25:05,310 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:25:05,325 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:25:05,352 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:25:05,353 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:25:05,353 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:25:05,353 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:25:05,353 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:25:05,353 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:25:05,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:25:05,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:25:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states. [2020-10-14 08:25:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 08:25:05,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:05,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:25:05,396 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:05,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1212431174, now seen corresponding path program 1 times [2020-10-14 08:25:05,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:05,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366970949] [2020-10-14 08:25:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:07,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:10,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:10,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 08:25:10,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:25:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 08:25:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:10,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 08:25:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 08:25:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:25:11,348 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:11,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:11,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:11,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:11,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:25:11,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:11,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:11,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:11,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366970949] [2020-10-14 08:25:11,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:11,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:11,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637039821] [2020-10-14 08:25:11,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:11,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:11,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:11,462 INFO L87 Difference]: Start difference. First operand 317 states. Second operand 4 states. [2020-10-14 08:25:11,776 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-14 08:25:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:13,837 INFO L93 Difference]: Finished difference Result 641 states and 1120 transitions. [2020-10-14 08:25:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:13,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 08:25:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:13,859 INFO L225 Difference]: With dead ends: 641 [2020-10-14 08:25:13,860 INFO L226 Difference]: Without dead ends: 514 [2020-10-14 08:25:13,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-14 08:25:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 512. [2020-10-14 08:25:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-14 08:25:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 761 transitions. [2020-10-14 08:25:13,956 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 761 transitions. Word has length 150 [2020-10-14 08:25:13,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:13,957 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 761 transitions. [2020-10-14 08:25:13,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:13,958 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 761 transitions. [2020-10-14 08:25:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 08:25:13,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:13,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:25:13,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:25:13,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:13,970 INFO L82 PathProgramCache]: Analyzing trace with hash -2117865266, now seen corresponding path program 1 times [2020-10-14 08:25:13,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:13,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263188873] [2020-10-14 08:25:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:19,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:19,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 08:25:19,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:25:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:25:19,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:19,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 08:25:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 08:25:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:19,405 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:19,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:19,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:19,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:25:19,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:19,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:19,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:19,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:25:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:19,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263188873] [2020-10-14 08:25:19,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:19,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:19,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842362043] [2020-10-14 08:25:19,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:19,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:19,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:19,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:19,552 INFO L87 Difference]: Start difference. First operand 512 states and 761 transitions. Second operand 4 states. [2020-10-14 08:25:19,849 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-14 08:25:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:21,093 INFO L93 Difference]: Finished difference Result 1076 states and 1646 transitions. [2020-10-14 08:25:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:21,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 08:25:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:21,103 INFO L225 Difference]: With dead ends: 1076 [2020-10-14 08:25:21,103 INFO L226 Difference]: Without dead ends: 884 [2020-10-14 08:25:21,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-10-14 08:25:21,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 882. [2020-10-14 08:25:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-14 08:25:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1323 transitions. [2020-10-14 08:25:21,167 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1323 transitions. Word has length 150 [2020-10-14 08:25:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:21,169 INFO L479 AbstractCegarLoop]: Abstraction has 882 states and 1323 transitions. [2020-10-14 08:25:21,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1323 transitions. [2020-10-14 08:25:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 08:25:21,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:21,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:25:21,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:25:21,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:21,178 INFO L82 PathProgramCache]: Analyzing trace with hash -922154316, now seen corresponding path program 1 times [2020-10-14 08:25:21,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:21,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770070104] [2020-10-14 08:25:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:26,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:26,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 08:25:26,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:25:26,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:25:26,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:26,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:26,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 08:25:26,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:26,559 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:26,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:26,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:26,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:25:26,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:26,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:26,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770070104] [2020-10-14 08:25:26,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:26,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:26,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075242321] [2020-10-14 08:25:26,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:26,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:26,652 INFO L87 Difference]: Start difference. First operand 882 states and 1323 transitions. Second operand 5 states. [2020-10-14 08:25:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:28,956 INFO L93 Difference]: Finished difference Result 2565 states and 3840 transitions. [2020-10-14 08:25:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:28,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-14 08:25:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:28,969 INFO L225 Difference]: With dead ends: 2565 [2020-10-14 08:25:28,970 INFO L226 Difference]: Without dead ends: 1700 [2020-10-14 08:25:28,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:28,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2020-10-14 08:25:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1698. [2020-10-14 08:25:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1698 states. [2020-10-14 08:25:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2519 transitions. [2020-10-14 08:25:29,068 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2519 transitions. Word has length 150 [2020-10-14 08:25:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:29,068 INFO L479 AbstractCegarLoop]: Abstraction has 1698 states and 2519 transitions. [2020-10-14 08:25:29,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2519 transitions. [2020-10-14 08:25:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 08:25:29,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:29,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:25:29,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:25:29,074 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:29,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1385882301, now seen corresponding path program 1 times [2020-10-14 08:25:29,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:29,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136974827] [2020-10-14 08:25:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:30,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:34,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:34,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 08:25:34,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:25:34,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:25:34,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:34,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:25:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:25:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:34,402 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:34,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:34,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:34,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:34,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:34,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:34,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:25:34,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:34,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:25:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:34,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136974827] [2020-10-14 08:25:34,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:34,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:34,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579569807] [2020-10-14 08:25:34,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:34,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:34,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:34,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:34,484 INFO L87 Difference]: Start difference. First operand 1698 states and 2519 transitions. Second operand 4 states. [2020-10-14 08:25:37,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:37,529 INFO L93 Difference]: Finished difference Result 4989 states and 7413 transitions. [2020-10-14 08:25:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:25:37,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-14 08:25:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:37,559 INFO L225 Difference]: With dead ends: 4989 [2020-10-14 08:25:37,560 INFO L226 Difference]: Without dead ends: 3375 [2020-10-14 08:25:37,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-10-14 08:25:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 1701. [2020-10-14 08:25:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-10-14 08:25:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2523 transitions. [2020-10-14 08:25:37,779 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2523 transitions. Word has length 151 [2020-10-14 08:25:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:37,780 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2523 transitions. [2020-10-14 08:25:37,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2523 transitions. [2020-10-14 08:25:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 08:25:37,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:37,788 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] [2020-10-14 08:25:37,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:25:37,789 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:37,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 775308021, now seen corresponding path program 1 times [2020-10-14 08:25:37,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:37,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827203742] [2020-10-14 08:25:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:37,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:42,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 08:25:42,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:25:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:25:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:42,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 08:25:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:43,147 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:43,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:43,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:43,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:43,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:25:43,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:43,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:43,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:43,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:43,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:43,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827203742] [2020-10-14 08:25:43,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:43,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:43,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029416938] [2020-10-14 08:25:43,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:43,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:43,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:43,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:43,271 INFO L87 Difference]: Start difference. First operand 1701 states and 2523 transitions. Second operand 5 states. [2020-10-14 08:25:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:45,714 INFO L93 Difference]: Finished difference Result 4959 states and 7340 transitions. [2020-10-14 08:25:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:45,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 08:25:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:45,733 INFO L225 Difference]: With dead ends: 4959 [2020-10-14 08:25:45,734 INFO L226 Difference]: Without dead ends: 3295 [2020-10-14 08:25:45,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2020-10-14 08:25:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 3293. [2020-10-14 08:25:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3293 states. [2020-10-14 08:25:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 4831 transitions. [2020-10-14 08:25:45,983 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 4831 transitions. Word has length 152 [2020-10-14 08:25:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:45,984 INFO L479 AbstractCegarLoop]: Abstraction has 3293 states and 4831 transitions. [2020-10-14 08:25:45,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 4831 transitions. [2020-10-14 08:25:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:25:45,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:45,990 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] [2020-10-14 08:25:45,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:25:45,991 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:45,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:45,991 INFO L82 PathProgramCache]: Analyzing trace with hash 530456292, now seen corresponding path program 1 times [2020-10-14 08:25:45,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:45,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308536211] [2020-10-14 08:25:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:47,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:51,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:51,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:25:51,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:25:51,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:25:51,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:51,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:25:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:25:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:51,231 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:25:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:51,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:51,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308536211] [2020-10-14 08:25:51,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:51,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:51,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926109198] [2020-10-14 08:25:51,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:51,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:51,282 INFO L87 Difference]: Start difference. First operand 3293 states and 4831 transitions. Second operand 4 states. [2020-10-14 08:25:53,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:53,580 INFO L93 Difference]: Finished difference Result 9617 states and 14130 transitions. [2020-10-14 08:25:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:25:53,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-14 08:25:53,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:53,613 INFO L225 Difference]: With dead ends: 9617 [2020-10-14 08:25:53,614 INFO L226 Difference]: Without dead ends: 6521 [2020-10-14 08:25:53,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2020-10-14 08:25:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 3299. [2020-10-14 08:25:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3299 states. [2020-10-14 08:25:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4839 transitions. [2020-10-14 08:25:53,849 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4839 transitions. Word has length 153 [2020-10-14 08:25:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:53,849 INFO L479 AbstractCegarLoop]: Abstraction has 3299 states and 4839 transitions. [2020-10-14 08:25:53,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4839 transitions. [2020-10-14 08:25:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 08:25:53,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:53,857 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] [2020-10-14 08:25:53,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:25:53,857 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:53,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1751130038, now seen corresponding path program 1 times [2020-10-14 08:25:53,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:53,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178979625] [2020-10-14 08:25:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:53,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:54,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:54,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:55,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:58,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:58,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 08:25:58,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:25:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:25:58,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:58,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 08:25:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:59,190 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:59,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:59,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:59,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:59,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:25:59,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:59,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:59,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178979625] [2020-10-14 08:25:59,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:59,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:59,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090363156] [2020-10-14 08:25:59,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:59,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:59,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:59,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:59,274 INFO L87 Difference]: Start difference. First operand 3299 states and 4839 transitions. Second operand 5 states. [2020-10-14 08:26:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:02,040 INFO L93 Difference]: Finished difference Result 8887 states and 13010 transitions. [2020-10-14 08:26:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:02,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-14 08:26:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:02,073 INFO L225 Difference]: With dead ends: 8887 [2020-10-14 08:26:02,073 INFO L226 Difference]: Without dead ends: 5735 [2020-10-14 08:26:02,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5735 states. [2020-10-14 08:26:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5735 to 5733. [2020-10-14 08:26:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5733 states. [2020-10-14 08:26:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5733 states to 5733 states and 8284 transitions. [2020-10-14 08:26:02,466 INFO L78 Accepts]: Start accepts. Automaton has 5733 states and 8284 transitions. Word has length 154 [2020-10-14 08:26:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:02,467 INFO L479 AbstractCegarLoop]: Abstraction has 5733 states and 8284 transitions. [2020-10-14 08:26:02,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5733 states and 8284 transitions. [2020-10-14 08:26:02,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 08:26:02,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:02,477 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] [2020-10-14 08:26:02,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:26:02,478 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:02,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1389773571, now seen corresponding path program 1 times [2020-10-14 08:26:02,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:02,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684372939] [2020-10-14 08:26:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:07,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:07,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 08:26:07,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:26:07,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:26:07,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:07,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:26:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:26:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:07,706 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:07,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:07,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:07,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:26:07,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:07,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:07,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684372939] [2020-10-14 08:26:07,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:07,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:07,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765973544] [2020-10-14 08:26:07,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:07,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:07,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:07,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:07,747 INFO L87 Difference]: Start difference. First operand 5733 states and 8284 transitions. Second operand 4 states. [2020-10-14 08:26:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:10,378 INFO L93 Difference]: Finished difference Result 17023 states and 24621 transitions. [2020-10-14 08:26:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:26:10,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-14 08:26:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:10,416 INFO L225 Difference]: With dead ends: 17023 [2020-10-14 08:26:10,416 INFO L226 Difference]: Without dead ends: 11439 [2020-10-14 08:26:10,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11439 states. [2020-10-14 08:26:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11439 to 5736. [2020-10-14 08:26:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5736 states. [2020-10-14 08:26:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5736 states to 5736 states and 8288 transitions. [2020-10-14 08:26:10,856 INFO L78 Accepts]: Start accepts. Automaton has 5736 states and 8288 transitions. Word has length 155 [2020-10-14 08:26:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:10,857 INFO L479 AbstractCegarLoop]: Abstraction has 5736 states and 8288 transitions. [2020-10-14 08:26:10,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5736 states and 8288 transitions. [2020-10-14 08:26:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 08:26:10,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:10,867 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] [2020-10-14 08:26:10,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:26:10,867 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:10,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1273995593, now seen corresponding path program 1 times [2020-10-14 08:26:10,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:10,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734944005] [2020-10-14 08:26:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:11,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:11,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:11,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:15,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:15,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 08:26:15,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:26:15,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:26:15,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:15,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 08:26:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:26:15,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:16,155 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:26:16,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:16,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:16,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734944005] [2020-10-14 08:26:16,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:16,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:16,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982102566] [2020-10-14 08:26:16,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:16,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:16,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:16,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:16,209 INFO L87 Difference]: Start difference. First operand 5736 states and 8288 transitions. Second operand 5 states. [2020-10-14 08:26:17,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:17,747 INFO L93 Difference]: Finished difference Result 11424 states and 16506 transitions. [2020-10-14 08:26:17,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:17,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 08:26:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:17,761 INFO L225 Difference]: With dead ends: 11424 [2020-10-14 08:26:17,762 INFO L226 Difference]: Without dead ends: 5726 [2020-10-14 08:26:17,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2020-10-14 08:26:18,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 5726. [2020-10-14 08:26:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5726 states. [2020-10-14 08:26:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 8270 transitions. [2020-10-14 08:26:18,128 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 8270 transitions. Word has length 156 [2020-10-14 08:26:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:18,128 INFO L479 AbstractCegarLoop]: Abstraction has 5726 states and 8270 transitions. [2020-10-14 08:26:18,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:18,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 8270 transitions. [2020-10-14 08:26:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 08:26:18,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:18,138 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] [2020-10-14 08:26:18,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:26:18,139 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:18,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:18,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1431404403, now seen corresponding path program 1 times [2020-10-14 08:26:18,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:18,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017768795] [2020-10-14 08:26:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:20,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:23,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:23,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 08:26:23,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:26:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:26:23,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:23,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:26:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 08:26:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:23,469 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:23,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:23,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:23,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:26:23,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:23,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:23,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017768795] [2020-10-14 08:26:23,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:23,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:23,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300609001] [2020-10-14 08:26:23,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:23,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:23,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:23,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:23,520 INFO L87 Difference]: Start difference. First operand 5726 states and 8270 transitions. Second operand 5 states. [2020-10-14 08:26:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:25,643 INFO L93 Difference]: Finished difference Result 12777 states and 18470 transitions. [2020-10-14 08:26:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:25,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 08:26:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:25,659 INFO L225 Difference]: With dead ends: 12777 [2020-10-14 08:26:25,659 INFO L226 Difference]: Without dead ends: 7315 [2020-10-14 08:26:25,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:25,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2020-10-14 08:26:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 7313. [2020-10-14 08:26:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7313 states. [2020-10-14 08:26:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7313 states to 7313 states and 10392 transitions. [2020-10-14 08:26:26,120 INFO L78 Accepts]: Start accepts. Automaton has 7313 states and 10392 transitions. Word has length 156 [2020-10-14 08:26:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:26,121 INFO L479 AbstractCegarLoop]: Abstraction has 7313 states and 10392 transitions. [2020-10-14 08:26:26,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7313 states and 10392 transitions. [2020-10-14 08:26:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 08:26:26,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:26,131 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] [2020-10-14 08:26:26,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:26:26,131 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:26,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1762623742, now seen corresponding path program 1 times [2020-10-14 08:26:26,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:26,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17138687] [2020-10-14 08:26:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:31,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:31,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 08:26:31,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:26:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:26:31,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:31,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 08:26:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 08:26:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:31,393 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:31,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:31,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:31,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:31,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:26:31,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:31,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:31,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:31,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17138687] [2020-10-14 08:26:31,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:31,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:31,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448956445] [2020-10-14 08:26:31,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:31,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:31,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:31,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:31,434 INFO L87 Difference]: Start difference. First operand 7313 states and 10392 transitions. Second operand 5 states. [2020-10-14 08:26:31,651 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-14 08:26:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:33,714 INFO L93 Difference]: Finished difference Result 17035 states and 24936 transitions. [2020-10-14 08:26:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:26:33,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-14 08:26:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:33,737 INFO L225 Difference]: With dead ends: 17035 [2020-10-14 08:26:33,738 INFO L226 Difference]: Without dead ends: 13567 [2020-10-14 08:26:33,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13567 states. [2020-10-14 08:26:34,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13567 to 13565. [2020-10-14 08:26:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13565 states. [2020-10-14 08:26:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13565 states to 13565 states and 19380 transitions. [2020-10-14 08:26:34,638 INFO L78 Accepts]: Start accepts. Automaton has 13565 states and 19380 transitions. Word has length 164 [2020-10-14 08:26:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:34,639 INFO L479 AbstractCegarLoop]: Abstraction has 13565 states and 19380 transitions. [2020-10-14 08:26:34,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 13565 states and 19380 transitions. [2020-10-14 08:26:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 08:26:34,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:34,655 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] [2020-10-14 08:26:34,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:26:34,655 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:34,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1388950555, now seen corresponding path program 1 times [2020-10-14 08:26:34,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:34,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9427886] [2020-10-14 08:26:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:34,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:39,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:39,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 08:26:39,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:26:39,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 08:26:39,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:39,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:26:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 08:26:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:40,010 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:40,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:40,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:40,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:40,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:40,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:26:40,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:40,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:40,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9427886] [2020-10-14 08:26:40,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:40,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:40,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840529353] [2020-10-14 08:26:40,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:40,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:40,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:40,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:40,068 INFO L87 Difference]: Start difference. First operand 13565 states and 19380 transitions. Second operand 5 states. [2020-10-14 08:26:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:42,032 INFO L93 Difference]: Finished difference Result 25521 states and 36473 transitions. [2020-10-14 08:26:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:42,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-14 08:26:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:42,052 INFO L225 Difference]: With dead ends: 25521 [2020-10-14 08:26:42,052 INFO L226 Difference]: Without dead ends: 12039 [2020-10-14 08:26:42,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12039 states. [2020-10-14 08:26:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12039 to 12039. [2020-10-14 08:26:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12039 states. [2020-10-14 08:26:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12039 states to 12039 states and 17194 transitions. [2020-10-14 08:26:42,851 INFO L78 Accepts]: Start accepts. Automaton has 12039 states and 17194 transitions. Word has length 164 [2020-10-14 08:26:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:42,851 INFO L479 AbstractCegarLoop]: Abstraction has 12039 states and 17194 transitions. [2020-10-14 08:26:42,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 12039 states and 17194 transitions. [2020-10-14 08:26:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 08:26:42,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:42,861 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] [2020-10-14 08:26:42,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:26:42,862 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:42,862 INFO L82 PathProgramCache]: Analyzing trace with hash 805713214, now seen corresponding path program 1 times [2020-10-14 08:26:42,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:42,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318264221] [2020-10-14 08:26:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:42,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:43,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:47,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:47,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 08:26:47,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:26:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:26:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:47,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 08:26:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:26:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:48,084 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:48,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:48,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:48,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:48,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:26:48,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:48,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:48,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318264221] [2020-10-14 08:26:48,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:48,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:48,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325634618] [2020-10-14 08:26:48,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:48,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:48,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:48,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:48,121 INFO L87 Difference]: Start difference. First operand 12039 states and 17194 transitions. Second operand 4 states. [2020-10-14 08:26:48,316 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-14 08:26:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:50,925 INFO L93 Difference]: Finished difference Result 31886 states and 46063 transitions. [2020-10-14 08:26:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:50,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-14 08:26:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:50,956 INFO L225 Difference]: With dead ends: 31886 [2020-10-14 08:26:50,956 INFO L226 Difference]: Without dead ends: 22036 [2020-10-14 08:26:50,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:50,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22036 states. [2020-10-14 08:26:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22036 to 22034. [2020-10-14 08:26:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22034 states. [2020-10-14 08:26:52,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22034 states to 22034 states and 31472 transitions. [2020-10-14 08:26:52,299 INFO L78 Accepts]: Start accepts. Automaton has 22034 states and 31472 transitions. Word has length 170 [2020-10-14 08:26:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:52,299 INFO L479 AbstractCegarLoop]: Abstraction has 22034 states and 31472 transitions. [2020-10-14 08:26:52,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 22034 states and 31472 transitions. [2020-10-14 08:26:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 08:26:52,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:52,316 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] [2020-10-14 08:26:52,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:26:52,316 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1618141159, now seen corresponding path program 1 times [2020-10-14 08:26:52,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:52,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010129372] [2020-10-14 08:26:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:57,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 08:26:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:26:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:26:57,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:57,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:26:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:26:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 08:26:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:57,557 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:57,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:57,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:26:57,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:57,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:26:57,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:57,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010129372] [2020-10-14 08:26:57,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:57,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:57,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361497458] [2020-10-14 08:26:57,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:26:57,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:57,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:26:57,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:57,620 INFO L87 Difference]: Start difference. First operand 22034 states and 31472 transitions. Second operand 6 states. [2020-10-14 08:26:57,837 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-14 08:27:02,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:02,528 INFO L93 Difference]: Finished difference Result 52077 states and 76472 transitions. [2020-10-14 08:27:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:27:02,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-14 08:27:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:02,591 INFO L225 Difference]: With dead ends: 52077 [2020-10-14 08:27:02,591 INFO L226 Difference]: Without dead ends: 40387 [2020-10-14 08:27:02,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:27:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40387 states. [2020-10-14 08:27:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40387 to 40385. [2020-10-14 08:27:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40385 states. [2020-10-14 08:27:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40385 states to 40385 states and 57918 transitions. [2020-10-14 08:27:06,164 INFO L78 Accepts]: Start accepts. Automaton has 40385 states and 57918 transitions. Word has length 170 [2020-10-14 08:27:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:06,165 INFO L479 AbstractCegarLoop]: Abstraction has 40385 states and 57918 transitions. [2020-10-14 08:27:06,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:27:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 40385 states and 57918 transitions. [2020-10-14 08:27:06,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 08:27:06,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:06,191 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] [2020-10-14 08:27:06,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:27:06,191 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:06,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1493161469, now seen corresponding path program 1 times [2020-10-14 08:27:06,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:06,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339432173] [2020-10-14 08:27:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:06,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:11,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:11,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 08:27:11,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:27:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:27:11,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:11,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:27:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 08:27:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:11,497 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:27:11,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:11,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:11,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:11,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:11,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:27:11,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:11,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:27:11,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339432173] [2020-10-14 08:27:11,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:11,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:11,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312716854] [2020-10-14 08:27:11,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:11,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:11,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:11,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:11,567 INFO L87 Difference]: Start difference. First operand 40385 states and 57918 transitions. Second operand 5 states. [2020-10-14 08:27:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:19,333 INFO L93 Difference]: Finished difference Result 111274 states and 159596 transitions. [2020-10-14 08:27:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:19,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 08:27:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:19,427 INFO L225 Difference]: With dead ends: 111274 [2020-10-14 08:27:19,427 INFO L226 Difference]: Without dead ends: 71832 [2020-10-14 08:27:19,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:19,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71832 states. [2020-10-14 08:27:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71832 to 71778. [2020-10-14 08:27:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71778 states. [2020-10-14 08:27:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71778 states to 71778 states and 101846 transitions. [2020-10-14 08:27:25,089 INFO L78 Accepts]: Start accepts. Automaton has 71778 states and 101846 transitions. Word has length 170 [2020-10-14 08:27:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:25,090 INFO L479 AbstractCegarLoop]: Abstraction has 71778 states and 101846 transitions. [2020-10-14 08:27:25,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 71778 states and 101846 transitions. [2020-10-14 08:27:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 08:27:25,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:25,121 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] [2020-10-14 08:27:25,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:27:25,121 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:25,122 INFO L82 PathProgramCache]: Analyzing trace with hash -379065171, now seen corresponding path program 1 times [2020-10-14 08:27:25,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:25,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333500801] [2020-10-14 08:27:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:25,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:30,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:30,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 08:27:30,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:27:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:27:30,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:30,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 08:27:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:27:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:30,423 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:27:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:30,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:30,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:30,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:30,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:27:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:30,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:27:30,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333500801] [2020-10-14 08:27:30,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:30,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:30,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843485610] [2020-10-14 08:27:30,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:30,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:30,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:30,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:30,462 INFO L87 Difference]: Start difference. First operand 71778 states and 101846 transitions. Second operand 5 states. [2020-10-14 08:27:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:37,761 INFO L93 Difference]: Finished difference Result 143476 states and 203580 transitions. [2020-10-14 08:27:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:37,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 08:27:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:37,859 INFO L225 Difference]: With dead ends: 143476 [2020-10-14 08:27:37,859 INFO L226 Difference]: Without dead ends: 71768 [2020-10-14 08:27:37,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71768 states. [2020-10-14 08:27:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71768 to 71768. [2020-10-14 08:27:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71768 states. [2020-10-14 08:27:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71768 states to 71768 states and 101826 transitions. [2020-10-14 08:27:43,520 INFO L78 Accepts]: Start accepts. Automaton has 71768 states and 101826 transitions. Word has length 170 [2020-10-14 08:27:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:27:43,521 INFO L479 AbstractCegarLoop]: Abstraction has 71768 states and 101826 transitions. [2020-10-14 08:27:43,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:27:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 71768 states and 101826 transitions. [2020-10-14 08:27:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 08:27:43,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:27:43,563 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] [2020-10-14 08:27:43,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:27:43,564 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:27:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:27:43,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2012663408, now seen corresponding path program 1 times [2020-10-14 08:27:43,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:27:43,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706963096] [2020-10-14 08:27:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:27:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:43,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:44,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:48,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:48,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 08:27:48,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:27:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4514 [2020-10-14 08:27:48,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:48,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:27:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:27:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 08:27:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:48,417 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:27:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:27:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:27:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:27:48,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:27:48,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:27:48,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:27:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:27:48,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:27:48,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:27:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:27:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:27:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:27:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:27:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:27:48,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706963096] [2020-10-14 08:27:48,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:27:48,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:27:48,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642122245] [2020-10-14 08:27:48,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:27:48,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:27:48,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:27:48,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:27:48,481 INFO L87 Difference]: Start difference. First operand 71768 states and 101826 transitions. Second operand 5 states. [2020-10-14 08:27:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:27:57,706 INFO L93 Difference]: Finished difference Result 166795 states and 236228 transitions. [2020-10-14 08:27:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:27:57,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 08:27:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:27:57,818 INFO L225 Difference]: With dead ends: 166795 [2020-10-14 08:27:57,818 INFO L226 Difference]: Without dead ends: 95815 [2020-10-14 08:27:57,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:27:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95815 states. [2020-10-14 08:28:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95815 to 95813. [2020-10-14 08:28:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95813 states. [2020-10-14 08:28:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95813 states to 95813 states and 133507 transitions. [2020-10-14 08:28:07,358 INFO L78 Accepts]: Start accepts. Automaton has 95813 states and 133507 transitions. Word has length 170 [2020-10-14 08:28:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:28:07,359 INFO L479 AbstractCegarLoop]: Abstraction has 95813 states and 133507 transitions. [2020-10-14 08:28:07,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:28:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 95813 states and 133507 transitions. [2020-10-14 08:28:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 08:28:07,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:07,403 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] [2020-10-14 08:28:07,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:28:07,403 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:07,404 INFO L82 PathProgramCache]: Analyzing trace with hash -824103637, now seen corresponding path program 1 times [2020-10-14 08:28:07,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:07,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200078580] [2020-10-14 08:28:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:07,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:11,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:12,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:12,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 08:28:12,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:28:12,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:28:12,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:12,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 08:28:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:28:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:12,638 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:28:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:12,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:12,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:12,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:28:12,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:12,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:28:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:28:12,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200078580] [2020-10-14 08:28:12,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:12,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:12,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307802851] [2020-10-14 08:28:12,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:12,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:12,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:12,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:12,681 INFO L87 Difference]: Start difference. First operand 95813 states and 133507 transitions. Second operand 4 states. [2020-10-14 08:28:12,891 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-14 08:28:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:28:28,392 INFO L93 Difference]: Finished difference Result 233097 states and 334223 transitions. [2020-10-14 08:28:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:28:28,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-14 08:28:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:28:28,603 INFO L225 Difference]: With dead ends: 233097 [2020-10-14 08:28:28,603 INFO L226 Difference]: Without dead ends: 161096 [2020-10-14 08:28:28,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:28:28,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161096 states.