/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=BIGGEST --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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:26:52,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:26:52,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:26:52,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:26:52,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:26:52,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:26:52,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:26:52,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:26:52,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:26:52,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:26:52,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:26:52,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:26:52,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:26:52,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:26:52,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:26:52,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:26:52,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:26:52,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:26:52,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:26:52,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:26:52,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:26:52,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:26:52,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:26:52,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:26:52,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:26:52,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:26:52,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:26:52,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:26:52,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:26:52,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:26:52,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:26:52,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:26:52,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:26:52,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:26:52,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:26:52,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:26:52,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:26:52,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:26:52,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:26:52,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:26:52,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:26:52,165 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 [2020-10-12 20:26:52,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:26:52,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:26:52,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:26:52,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:26:52,189 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:26:52,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:26:52,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:26:52,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:26:52,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:26:52,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:26:52,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:26:52,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:26:52,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:26:52,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:26:52,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:26:52,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:26:52,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:26:52,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:26:52,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:26:52,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:26:52,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:26:52,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:26:52,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:26:52,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:26:52,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:26:52,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:26:52,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:26:52,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:26:52,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:26:52,194 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:26:52,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:26:52,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:26:52,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:26:52,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:26:52,519 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:26:52,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:26:52,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8510ac8ea/b7d99ea614314aabb7de5f37ad71b585/FLAG4dce97d82 [2020-10-12 20:26:53,281 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:26:53,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:26:53,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8510ac8ea/b7d99ea614314aabb7de5f37ad71b585/FLAG4dce97d82 [2020-10-12 20:26:53,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8510ac8ea/b7d99ea614314aabb7de5f37ad71b585 [2020-10-12 20:26:53,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:26:53,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:26:53,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:26:53,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:26:53,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:26:53,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:26:53" (1/1) ... [2020-10-12 20:26:53,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76095f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:53, skipping insertion in model container [2020-10-12 20:26:53,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:26:53" (1/1) ... [2020-10-12 20:26:53,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:26:53,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:26:55,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:26:55,213 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:26:56,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:26:56,239 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:26:56,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56 WrapperNode [2020-10-12 20:26:56,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:26:56,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:26:56,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:26:56,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:26:56,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (1/1) ... [2020-10-12 20:26:56,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (1/1) ... [2020-10-12 20:26:56,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (1/1) ... [2020-10-12 20:26:56,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (1/1) ... [2020-10-12 20:26:56,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (1/1) ... [2020-10-12 20:26:56,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (1/1) ... [2020-10-12 20:26:56,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (1/1) ... [2020-10-12 20:26:56,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:26:56,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:26:56,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:26:56,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:26:56,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (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 [2020-10-12 20:26:56,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:26:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:26:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:26:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:26:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:26:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:26:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:26:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:26:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:26:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:26:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:26:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:26:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:26:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:26:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:26:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:26:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:26:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:26:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:26:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:26:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:26:59,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:26:59,689 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:26:59,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:26:59 BoogieIcfgContainer [2020-10-12 20:26:59,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:26:59,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:26:59,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:26:59,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:26:59,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:26:53" (1/3) ... [2020-10-12 20:26:59,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc473cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:26:59, skipping insertion in model container [2020-10-12 20:26:59,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:26:56" (2/3) ... [2020-10-12 20:26:59,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc473cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:26:59, skipping insertion in model container [2020-10-12 20:26:59,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:26:59" (3/3) ... [2020-10-12 20:26:59,716 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:26:59,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:26:59,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-12 20:26:59,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-12 20:26:59,779 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:26:59,779 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:26:59,779 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:26:59,779 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:26:59,779 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:26:59,779 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:26:59,780 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:26:59,780 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:26:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states. [2020-10-12 20:26:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-12 20:26:59,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:59,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:26:59,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:59,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:59,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1845159802, now seen corresponding path program 1 times [2020-10-12 20:26:59,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:59,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567444431] [2020-10-12 20:26:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:01,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:03,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:04,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:05,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:05,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-12 20:27:05,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:27:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 20:27:05,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:27:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 20:27:05,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:27:06,787 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:27:06,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:06,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:06,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:06,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:27:06,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:07,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567444431] [2020-10-12 20:27:07,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:07,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:07,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100692484] [2020-10-12 20:27:07,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:07,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:07,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:07,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:07,160 INFO L87 Difference]: Start difference. First operand 992 states. Second operand 5 states. [2020-10-12 20:27:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:18,667 INFO L93 Difference]: Finished difference Result 2887 states and 5163 transitions. [2020-10-12 20:27:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:27:18,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-12 20:27:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:18,713 INFO L225 Difference]: With dead ends: 2887 [2020-10-12 20:27:18,714 INFO L226 Difference]: Without dead ends: 1916 [2020-10-12 20:27:18,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:27:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2020-10-12 20:27:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1850. [2020-10-12 20:27:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2020-10-12 20:27:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2831 transitions. [2020-10-12 20:27:18,896 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2831 transitions. Word has length 318 [2020-10-12 20:27:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:18,897 INFO L479 AbstractCegarLoop]: Abstraction has 1850 states and 2831 transitions. [2020-10-12 20:27:18,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:27:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2831 transitions. [2020-10-12 20:27:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 20:27:18,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:18,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:27:18,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:27:18,907 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash 702335015, now seen corresponding path program 1 times [2020-10-12 20:27:18,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:18,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684483761] [2020-10-12 20:27:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:20,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:20,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:24,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 20:27:24,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:27:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-12 20:27:24,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:27:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 20:27:24,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:24,942 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:27:24,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:24,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:24,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:24,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:27:24,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:24,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:25,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684483761] [2020-10-12 20:27:25,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:25,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:25,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656478975] [2020-10-12 20:27:25,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:25,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:25,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:25,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:25,317 INFO L87 Difference]: Start difference. First operand 1850 states and 2831 transitions. Second operand 5 states. [2020-10-12 20:27:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:35,911 INFO L93 Difference]: Finished difference Result 5392 states and 8219 transitions. [2020-10-12 20:27:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:27:35,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-12 20:27:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:35,931 INFO L225 Difference]: With dead ends: 5392 [2020-10-12 20:27:35,931 INFO L226 Difference]: Without dead ends: 3617 [2020-10-12 20:27:35,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:27:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2020-10-12 20:27:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 3509. [2020-10-12 20:27:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3509 states. [2020-10-12 20:27:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5352 transitions. [2020-10-12 20:27:36,086 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5352 transitions. Word has length 320 [2020-10-12 20:27:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:36,087 INFO L479 AbstractCegarLoop]: Abstraction has 3509 states and 5352 transitions. [2020-10-12 20:27:36,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:27:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5352 transitions. [2020-10-12 20:27:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 20:27:36,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:36,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:27:36,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:27:36,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:36,162 INFO L82 PathProgramCache]: Analyzing trace with hash -858819850, now seen corresponding path program 1 times [2020-10-12 20:27:36,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:36,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698887270] [2020-10-12 20:27:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:36,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:38,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:39,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:39,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:41,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:41,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 20:27:41,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:27:41,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:27:41,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:27:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:27:41,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:42,037 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:27:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:42,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:42,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:42,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 20:27:42,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:42,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:42,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:42,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:42,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698887270] [2020-10-12 20:27:42,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:42,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:42,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033304926] [2020-10-12 20:27:42,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:42,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:42,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:42,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:42,348 INFO L87 Difference]: Start difference. First operand 3509 states and 5352 transitions. Second operand 5 states. [2020-10-12 20:27:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:51,810 INFO L93 Difference]: Finished difference Result 10259 states and 15599 transitions. [2020-10-12 20:27:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:27:51,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-12 20:27:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:51,844 INFO L225 Difference]: With dead ends: 10259 [2020-10-12 20:27:51,845 INFO L226 Difference]: Without dead ends: 6847 [2020-10-12 20:27:51,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:27:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2020-10-12 20:27:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6713. [2020-10-12 20:27:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6713 states. [2020-10-12 20:27:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 10175 transitions. [2020-10-12 20:27:52,107 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 10175 transitions. Word has length 322 [2020-10-12 20:27:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:52,108 INFO L479 AbstractCegarLoop]: Abstraction has 6713 states and 10175 transitions. [2020-10-12 20:27:52,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:27:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 10175 transitions. [2020-10-12 20:27:52,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-12 20:27:52,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:52,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:27:52,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:27:52,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1094309844, now seen corresponding path program 1 times [2020-10-12 20:27:52,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:52,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817643011] [2020-10-12 20:27:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:52,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:57,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:57,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-12 20:27:57,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:27:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 20:27:57,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:27:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 20:27:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:57,914 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:27:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:57,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:57,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:57,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:57,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:27:57,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:57,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:58,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817643011] [2020-10-12 20:27:58,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:58,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:58,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642457517] [2020-10-12 20:27:58,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:58,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:58,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:58,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:58,107 INFO L87 Difference]: Start difference. First operand 6713 states and 10175 transitions. Second operand 5 states. [2020-10-12 20:28:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:07,390 INFO L93 Difference]: Finished difference Result 19758 states and 29884 transitions. [2020-10-12 20:28:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:28:07,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-12 20:28:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:07,444 INFO L225 Difference]: With dead ends: 19758 [2020-10-12 20:28:07,444 INFO L226 Difference]: Without dead ends: 13105 [2020-10-12 20:28:07,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:28:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13105 states. [2020-10-12 20:28:07,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13105 to 12991. [2020-10-12 20:28:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12991 states. [2020-10-12 20:28:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 19547 transitions. [2020-10-12 20:28:07,931 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 19547 transitions. Word has length 324 [2020-10-12 20:28:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:07,932 INFO L479 AbstractCegarLoop]: Abstraction has 12991 states and 19547 transitions. [2020-10-12 20:28:07,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:07,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 19547 transitions. [2020-10-12 20:28:07,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-12 20:28:07,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:07,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:28:07,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:28:07,963 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:07,963 INFO L82 PathProgramCache]: Analyzing trace with hash -735997448, now seen corresponding path program 1 times [2020-10-12 20:28:07,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:07,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726987577] [2020-10-12 20:28:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:12,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:13,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-12 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:13,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 20:28:13,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:28:13,753 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:28:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:13,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:13,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:13,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:28:13,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:13,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726987577] [2020-10-12 20:28:13,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:13,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:13,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319372056] [2020-10-12 20:28:13,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:13,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:13,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:13,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:13,939 INFO L87 Difference]: Start difference. First operand 12991 states and 19547 transitions. Second operand 5 states. [2020-10-12 20:28:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:23,789 INFO L93 Difference]: Finished difference Result 38011 states and 57050 transitions. [2020-10-12 20:28:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:28:23,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-12 20:28:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:23,860 INFO L225 Difference]: With dead ends: 38011 [2020-10-12 20:28:23,861 INFO L226 Difference]: Without dead ends: 25345 [2020-10-12 20:28:23,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:28:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25345 states. [2020-10-12 20:28:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25345 to 25195. [2020-10-12 20:28:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25195 states. [2020-10-12 20:28:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25195 states to 25195 states and 37622 transitions. [2020-10-12 20:28:24,601 INFO L78 Accepts]: Start accepts. Automaton has 25195 states and 37622 transitions. Word has length 326 [2020-10-12 20:28:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:24,602 INFO L479 AbstractCegarLoop]: Abstraction has 25195 states and 37622 transitions. [2020-10-12 20:28:24,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 25195 states and 37622 transitions. [2020-10-12 20:28:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-12 20:28:24,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:24,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:28:24,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:28:24,672 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash 2055771026, now seen corresponding path program 1 times [2020-10-12 20:28:24,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:24,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206773705] [2020-10-12 20:28:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:24,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:27,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:29,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:29,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 20:28:29,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:28:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:28:29,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 20:28:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:30,377 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:28:30,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:30,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:30,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:30,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:30,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:28:30,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:30,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:30,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206773705] [2020-10-12 20:28:30,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:30,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:30,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254120624] [2020-10-12 20:28:30,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:30,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:30,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:30,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:30,518 INFO L87 Difference]: Start difference. First operand 25195 states and 37622 transitions. Second operand 5 states. [2020-10-12 20:28:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:40,891 INFO L93 Difference]: Finished difference Result 74353 states and 110816 transitions. [2020-10-12 20:28:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:28:40,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-12 20:28:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:41,002 INFO L225 Difference]: With dead ends: 74353 [2020-10-12 20:28:41,002 INFO L226 Difference]: Without dead ends: 49415 [2020-10-12 20:28:41,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:28:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49415 states. [2020-10-12 20:28:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49415 to 49265. [2020-10-12 20:28:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49265 states. [2020-10-12 20:28:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49265 states to 49265 states and 72948 transitions. [2020-10-12 20:28:42,529 INFO L78 Accepts]: Start accepts. Automaton has 49265 states and 72948 transitions. Word has length 328 [2020-10-12 20:28:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:42,529 INFO L479 AbstractCegarLoop]: Abstraction has 49265 states and 72948 transitions. [2020-10-12 20:28:42,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 49265 states and 72948 transitions. [2020-10-12 20:28:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 20:28:42,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:42,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:28:42,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:28:42,581 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash 145199607, now seen corresponding path program 1 times [2020-10-12 20:28:42,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:42,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211508830] [2020-10-12 20:28:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:42,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:43,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:44,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:47,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 20:28:47,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:28:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:28:47,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 20:28:47,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:48,266 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:28:48,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:48,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:48,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:28:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:48,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211508830] [2020-10-12 20:28:48,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:48,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:48,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659922755] [2020-10-12 20:28:48,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:48,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:48,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:48,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:48,403 INFO L87 Difference]: Start difference. First operand 49265 states and 72948 transitions. Second operand 5 states. [2020-10-12 20:29:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:00,388 INFO L93 Difference]: Finished difference Result 145372 states and 214833 transitions. [2020-10-12 20:29:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:29:00,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-12 20:29:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:00,519 INFO L225 Difference]: With dead ends: 145372 [2020-10-12 20:29:00,519 INFO L226 Difference]: Without dead ends: 96150 [2020-10-12 20:29:00,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:29:00,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96150 states. [2020-10-12 20:29:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96150 to 96072. [2020-10-12 20:29:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96072 states. [2020-10-12 20:29:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96072 states to 96072 states and 140978 transitions. [2020-10-12 20:29:05,350 INFO L78 Accepts]: Start accepts. Automaton has 96072 states and 140978 transitions. Word has length 330 [2020-10-12 20:29:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:05,350 INFO L479 AbstractCegarLoop]: Abstraction has 96072 states and 140978 transitions. [2020-10-12 20:29:05,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:29:05,350 INFO L276 IsEmpty]: Start isEmpty. Operand 96072 states and 140978 transitions. [2020-10-12 20:29:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-12 20:29:05,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:05,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:29:05,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:29:05,432 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:05,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1601086101, now seen corresponding path program 1 times [2020-10-12 20:29:05,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:05,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140847828] [2020-10-12 20:29:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:06,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:10,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:10,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-12 20:29:10,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:29:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:29:10,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:29:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 20:29:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:29:10,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:11,517 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:29:11,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:11,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:11,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:11,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:11,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:29:11,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:11,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:11,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140847828] [2020-10-12 20:29:11,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:11,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:29:11,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583437349] [2020-10-12 20:29:11,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:29:11,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:11,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:29:11,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:29:11,651 INFO L87 Difference]: Start difference. First operand 96072 states and 140978 transitions. Second operand 5 states. [2020-10-12 20:29:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:26,636 INFO L93 Difference]: Finished difference Result 268601 states and 392849 transitions. [2020-10-12 20:29:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:29:26,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-12 20:29:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:26,862 INFO L225 Difference]: With dead ends: 268601 [2020-10-12 20:29:26,863 INFO L226 Difference]: Without dead ends: 178467 [2020-10-12 20:29:26,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:29:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178467 states. [2020-10-12 20:29:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178467 to 99949. [2020-10-12 20:29:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99949 states. [2020-10-12 20:29:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99949 states to 99949 states and 147003 transitions. [2020-10-12 20:29:34,296 INFO L78 Accepts]: Start accepts. Automaton has 99949 states and 147003 transitions. Word has length 332 [2020-10-12 20:29:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:34,296 INFO L479 AbstractCegarLoop]: Abstraction has 99949 states and 147003 transitions. [2020-10-12 20:29:34,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:29:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 99949 states and 147003 transitions. [2020-10-12 20:29:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-12 20:29:34,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:34,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:29:34,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:29:34,366 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:34,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1944659245, now seen corresponding path program 1 times [2020-10-12 20:29:34,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:34,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272821975] [2020-10-12 20:29:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:35,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:35,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:39,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:39,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-12 20:29:39,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:29:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-12 20:29:39,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:29:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:29:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 20:29:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:40,221 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:29:40,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:40,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:40,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:40,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:40,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:29:40,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:40,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272821975] [2020-10-12 20:29:40,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:40,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:29:40,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784656875] [2020-10-12 20:29:40,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:29:40,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:40,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:29:40,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:29:40,381 INFO L87 Difference]: Start difference. First operand 99949 states and 147003 transitions. Second operand 5 states. [2020-10-12 20:30:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:30:00,578 INFO L93 Difference]: Finished difference Result 292148 states and 428629 transitions. [2020-10-12 20:30:00,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:30:00,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-12 20:30:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:30:00,893 INFO L225 Difference]: With dead ends: 292148 [2020-10-12 20:30:00,893 INFO L226 Difference]: Without dead ends: 195726 [2020-10-12 20:30:01,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:30:01,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195726 states. [2020-10-12 20:30:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195726 to 195512. [2020-10-12 20:30:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195512 states. [2020-10-12 20:30:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195512 states to 195512 states and 285321 transitions. [2020-10-12 20:30:12,440 INFO L78 Accepts]: Start accepts. Automaton has 195512 states and 285321 transitions. Word has length 334 [2020-10-12 20:30:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:30:12,440 INFO L479 AbstractCegarLoop]: Abstraction has 195512 states and 285321 transitions. [2020-10-12 20:30:12,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:30:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 195512 states and 285321 transitions. [2020-10-12 20:30:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-12 20:30:12,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:30:12,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:30:12,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:30:12,583 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:30:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:30:12,584 INFO L82 PathProgramCache]: Analyzing trace with hash 564812169, now seen corresponding path program 1 times [2020-10-12 20:30:12,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:30:12,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643258752] [2020-10-12 20:30:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:30:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:12,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:12,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:13,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:17,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-12 20:30:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:30:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:30:17,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:30:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:30:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:30:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:18,292 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-12 20:30:18,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:30:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:18,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:18,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:30:18,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:30:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:30:18,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:30:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:30:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:30:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:30:18,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643258752] [2020-10-12 20:30:18,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:30:18,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:30:18,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582469653] [2020-10-12 20:30:18,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:30:18,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:30:18,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:30:18,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:30:18,411 INFO L87 Difference]: Start difference. First operand 195512 states and 285321 transitions. Second operand 5 states.