/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:54:41,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:54:41,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:54:41,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:54:41,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:54:41,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:54:41,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:54:41,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:54:41,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:54:41,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:54:41,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:54:41,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:54:41,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:54:41,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:54:41,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:54:41,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:54:41,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:54:41,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:54:41,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:54:41,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:54:41,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:54:41,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:54:41,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:54:41,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:54:41,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:54:41,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:54:41,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:54:41,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:54:41,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:54:41,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:54:41,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:54:41,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:54:41,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:54:41,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:54:41,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:54:41,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:54:41,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:54:41,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:54:41,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:54:41,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:54:41,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:54:41,251 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 [2020-10-13 13:54:41,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:54:41,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:54:41,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:54:41,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:54:41,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:54:41,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:54:41,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:54:41,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:54:41,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:54:41,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:54:41,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:54:41,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:54:41,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:54:41,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:54:41,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:54:41,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:54:41,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:54:41,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:54:41,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:54:41,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:54:41,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:54:41,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:54:41,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:54:41,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:54:41,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:54:41,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:54:41,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:54:41,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:54:41,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:54:41,312 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:54:41,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:54:41,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:54:41,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:54:41,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:54:41,681 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:54:41,682 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:54:41,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5fbb987d/a3e72f00faa840e79bdf0394aea81fe4/FLAGd169ad0d5 [2020-10-13 13:54:42,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:54:42,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:54:42,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5fbb987d/a3e72f00faa840e79bdf0394aea81fe4/FLAGd169ad0d5 [2020-10-13 13:54:42,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5fbb987d/a3e72f00faa840e79bdf0394aea81fe4 [2020-10-13 13:54:42,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:54:42,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:54:42,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:54:42,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:54:42,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:54:42,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:54:42" (1/1) ... [2020-10-13 13:54:42,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44452bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:42, skipping insertion in model container [2020-10-13 13:54:42,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:54:42" (1/1) ... [2020-10-13 13:54:42,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:54:42,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:54:43,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:54:43,249 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:54:43,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:54:43,426 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:54:43,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43 WrapperNode [2020-10-13 13:54:43,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:54:43,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:54:43,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:54:43,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:54:43,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (1/1) ... [2020-10-13 13:54:43,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (1/1) ... [2020-10-13 13:54:43,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (1/1) ... [2020-10-13 13:54:43,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (1/1) ... [2020-10-13 13:54:43,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (1/1) ... [2020-10-13 13:54:43,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (1/1) ... [2020-10-13 13:54:43,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (1/1) ... [2020-10-13 13:54:43,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:54:43,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:54:43,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:54:43,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:54:43,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (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 [2020-10-13 13:54:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:54:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:54:43,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:54:43,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:54:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:54:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:54:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:54:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:54:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:54:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:54:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:54:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:54:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:54:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:54:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:54:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:54:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:54:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:54:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:54:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:54:44,960 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:54:44,961 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:54:44,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:54:44 BoogieIcfgContainer [2020-10-13 13:54:44,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:54:44,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:54:44,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:54:44,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:54:44,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:54:42" (1/3) ... [2020-10-13 13:54:44,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700ccc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:54:44, skipping insertion in model container [2020-10-13 13:54:44,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:43" (2/3) ... [2020-10-13 13:54:44,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700ccc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:54:44, skipping insertion in model container [2020-10-13 13:54:44,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:54:44" (3/3) ... [2020-10-13 13:54:44,976 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:54:44,987 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:54:44,995 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:54:45,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:54:45,037 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:54:45,037 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:54:45,037 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:54:45,038 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:54:45,038 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:54:45,038 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:54:45,038 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:54:45,038 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:54:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-10-13 13:54:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:54:45,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:45,081 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] [2020-10-13 13:54:45,082 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:45,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:45,089 INFO L82 PathProgramCache]: Analyzing trace with hash 112483708, now seen corresponding path program 1 times [2020-10-13 13:54:45,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:45,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701988045] [2020-10-13 13:54:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:46,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:46,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:46,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:47,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:48,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:50,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:50,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 13:54:50,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:54:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 13:54:50,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:54:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 13:54:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:54:51,055 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:54:51,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:51,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:51,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:54:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:51,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701988045] [2020-10-13 13:54:51,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:51,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:51,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104762484] [2020-10-13 13:54:51,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:51,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:51,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:51,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:51,180 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 5 states. [2020-10-13 13:54:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:54,283 INFO L93 Difference]: Finished difference Result 892 states and 1581 transitions. [2020-10-13 13:54:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:54:54,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 13:54:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:54,325 INFO L225 Difference]: With dead ends: 892 [2020-10-13 13:54:54,325 INFO L226 Difference]: Without dead ends: 587 [2020-10-13 13:54:54,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:54,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-10-13 13:54:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2020-10-13 13:54:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-13 13:54:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 847 transitions. [2020-10-13 13:54:54,457 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 847 transitions. Word has length 148 [2020-10-13 13:54:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:54,458 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 847 transitions. [2020-10-13 13:54:54,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 847 transitions. [2020-10-13 13:54:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 13:54:54,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:54,464 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] [2020-10-13 13:54:54,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:54:54,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:54,465 INFO L82 PathProgramCache]: Analyzing trace with hash -2115959658, now seen corresponding path program 1 times [2020-10-13 13:54:54,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:54,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619999127] [2020-10-13 13:54:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:54,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:58,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:58,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:59,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:59,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 13:54:59,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:54:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 13:54:59,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:54:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:54:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:54:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:59,861 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:54:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:59,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:54:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:54:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:59,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619999127] [2020-10-13 13:54:59,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:59,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:54:59,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880416003] [2020-10-13 13:54:59,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:54:59,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:59,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:54:59,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:54:59,937 INFO L87 Difference]: Start difference. First operand 585 states and 847 transitions. Second operand 4 states. [2020-10-13 13:55:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:03,098 INFO L93 Difference]: Finished difference Result 1709 states and 2471 transitions. [2020-10-13 13:55:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:55:03,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-13 13:55:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:03,106 INFO L225 Difference]: With dead ends: 1709 [2020-10-13 13:55:03,106 INFO L226 Difference]: Without dead ends: 1156 [2020-10-13 13:55:03,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2020-10-13 13:55:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 587. [2020-10-13 13:55:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-13 13:55:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 849 transitions. [2020-10-13 13:55:03,154 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 849 transitions. Word has length 149 [2020-10-13 13:55:03,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:03,155 INFO L479 AbstractCegarLoop]: Abstraction has 587 states and 849 transitions. [2020-10-13 13:55:03,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:55:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 849 transitions. [2020-10-13 13:55:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 13:55:03,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:03,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:03,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:55:03,160 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:03,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1564850243, now seen corresponding path program 1 times [2020-10-13 13:55:03,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:03,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294574784] [2020-10-13 13:55:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:08,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 13:55:08,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:55:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:55:08,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 13:55:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:08,486 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:55:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:08,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:08,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:55:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:08,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294574784] [2020-10-13 13:55:08,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:08,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:08,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051012074] [2020-10-13 13:55:08,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:08,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:08,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:08,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:08,575 INFO L87 Difference]: Start difference. First operand 587 states and 849 transitions. Second operand 5 states. [2020-10-13 13:55:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:10,915 INFO L93 Difference]: Finished difference Result 1697 states and 2453 transitions. [2020-10-13 13:55:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:10,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-13 13:55:10,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:10,925 INFO L225 Difference]: With dead ends: 1697 [2020-10-13 13:55:10,930 INFO L226 Difference]: Without dead ends: 1126 [2020-10-13 13:55:10,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-10-13 13:55:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1124. [2020-10-13 13:55:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1124 states. [2020-10-13 13:55:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1609 transitions. [2020-10-13 13:55:11,011 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1609 transitions. Word has length 150 [2020-10-13 13:55:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:11,012 INFO L479 AbstractCegarLoop]: Abstraction has 1124 states and 1609 transitions. [2020-10-13 13:55:11,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1609 transitions. [2020-10-13 13:55:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 13:55:11,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:11,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:11,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:55:11,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:11,028 INFO L82 PathProgramCache]: Analyzing trace with hash 157647613, now seen corresponding path program 1 times [2020-10-13 13:55:11,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:11,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322856071] [2020-10-13 13:55:11,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:11,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:16,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:16,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 13:55:16,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:55:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:55:16,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:55:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:55:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:16,492 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:55:16,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:16,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:16,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:16,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:16,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:55:16,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:16,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:16,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:16,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322856071] [2020-10-13 13:55:16,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:16,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:16,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629912993] [2020-10-13 13:55:16,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:16,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:16,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:16,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:16,582 INFO L87 Difference]: Start difference. First operand 1124 states and 1609 transitions. Second operand 5 states. [2020-10-13 13:55:18,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:18,007 INFO L93 Difference]: Finished difference Result 1953 states and 2789 transitions. [2020-10-13 13:55:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:18,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-13 13:55:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:18,013 INFO L225 Difference]: With dead ends: 1953 [2020-10-13 13:55:18,014 INFO L226 Difference]: Without dead ends: 863 [2020-10-13 13:55:18,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:18,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-13 13:55:18,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 862. [2020-10-13 13:55:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-13 13:55:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1227 transitions. [2020-10-13 13:55:18,065 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1227 transitions. Word has length 150 [2020-10-13 13:55:18,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:18,066 INFO L479 AbstractCegarLoop]: Abstraction has 862 states and 1227 transitions. [2020-10-13 13:55:18,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1227 transitions. [2020-10-13 13:55:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 13:55:18,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:18,069 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] [2020-10-13 13:55:18,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:55:18,069 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:18,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:18,070 INFO L82 PathProgramCache]: Analyzing trace with hash 959752812, now seen corresponding path program 1 times [2020-10-13 13:55:18,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:18,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27100277] [2020-10-13 13:55:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:18,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:23,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:23,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 13:55:23,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:55:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:55:23,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:55:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:23,475 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:55:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:23,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:23,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:23,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:23,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:55:23,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:23,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:23,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27100277] [2020-10-13 13:55:23,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:23,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:23,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218823779] [2020-10-13 13:55:23,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:23,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:23,548 INFO L87 Difference]: Start difference. First operand 862 states and 1227 transitions. Second operand 5 states. [2020-10-13 13:55:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:26,204 INFO L93 Difference]: Finished difference Result 2456 states and 3481 transitions. [2020-10-13 13:55:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:26,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-13 13:55:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:26,218 INFO L225 Difference]: With dead ends: 2456 [2020-10-13 13:55:26,218 INFO L226 Difference]: Without dead ends: 1647 [2020-10-13 13:55:26,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2020-10-13 13:55:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2020-10-13 13:55:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-10-13 13:55:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2314 transitions. [2020-10-13 13:55:26,375 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2314 transitions. Word has length 158 [2020-10-13 13:55:26,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:26,376 INFO L479 AbstractCegarLoop]: Abstraction has 1645 states and 2314 transitions. [2020-10-13 13:55:26,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2314 transitions. [2020-10-13 13:55:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 13:55:26,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:26,383 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] [2020-10-13 13:55:26,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:55:26,384 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:26,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1362532250, now seen corresponding path program 1 times [2020-10-13 13:55:26,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:26,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058895885] [2020-10-13 13:55:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:26,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:31,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 13:55:31,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:55:31,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 13:55:31,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:55:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:55:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:55:31,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:31,714 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:55:31,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:31,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:31,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:31,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:55:31,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:31,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058895885] [2020-10-13 13:55:31,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:31,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:55:31,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300539812] [2020-10-13 13:55:31,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:55:31,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:31,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:55:31,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:31,767 INFO L87 Difference]: Start difference. First operand 1645 states and 2314 transitions. Second operand 4 states. [2020-10-13 13:55:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:33,410 INFO L93 Difference]: Finished difference Result 4829 states and 6781 transitions. [2020-10-13 13:55:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:55:33,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-13 13:55:33,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:33,432 INFO L225 Difference]: With dead ends: 4829 [2020-10-13 13:55:33,432 INFO L226 Difference]: Without dead ends: 3246 [2020-10-13 13:55:33,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2020-10-13 13:55:33,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 1651. [2020-10-13 13:55:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2020-10-13 13:55:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2320 transitions. [2020-10-13 13:55:33,560 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2320 transitions. Word has length 159 [2020-10-13 13:55:33,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:33,561 INFO L479 AbstractCegarLoop]: Abstraction has 1651 states and 2320 transitions. [2020-10-13 13:55:33,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:55:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2320 transitions. [2020-10-13 13:55:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 13:55:33,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:33,565 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] [2020-10-13 13:55:33,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:55:33,569 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:33,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1136350739, now seen corresponding path program 1 times [2020-10-13 13:55:33,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:33,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898890795] [2020-10-13 13:55:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:38,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:38,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 13:55:38,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:55:38,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:55:38,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:55:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 13:55:38,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:38,865 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:55:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:38,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:38,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:38,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:55:38,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:38,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898890795] [2020-10-13 13:55:38,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:38,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:38,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983223793] [2020-10-13 13:55:38,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:38,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:38,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:38,932 INFO L87 Difference]: Start difference. First operand 1651 states and 2320 transitions. Second operand 5 states. [2020-10-13 13:55:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:40,742 INFO L93 Difference]: Finished difference Result 3246 states and 4558 transitions. [2020-10-13 13:55:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:40,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 13:55:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:40,754 INFO L225 Difference]: With dead ends: 3246 [2020-10-13 13:55:40,754 INFO L226 Difference]: Without dead ends: 1651 [2020-10-13 13:55:40,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-10-13 13:55:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1644. [2020-10-13 13:55:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-10-13 13:55:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2306 transitions. [2020-10-13 13:55:40,910 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2306 transitions. Word has length 160 [2020-10-13 13:55:40,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:40,910 INFO L479 AbstractCegarLoop]: Abstraction has 1644 states and 2306 transitions. [2020-10-13 13:55:40,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2306 transitions. [2020-10-13 13:55:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 13:55:40,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:40,917 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] [2020-10-13 13:55:40,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:55:40,918 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:40,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2107899468, now seen corresponding path program 1 times [2020-10-13 13:55:40,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:40,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300530266] [2020-10-13 13:55:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:43,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:44,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 13:55:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:55:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:55:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:55:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:46,229 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:55:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:46,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:46,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:46,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:55:46,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:46,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300530266] [2020-10-13 13:55:46,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:46,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:46,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459566424] [2020-10-13 13:55:46,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:46,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:46,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:46,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:46,273 INFO L87 Difference]: Start difference. First operand 1644 states and 2306 transitions. Second operand 5 states. [2020-10-13 13:55:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:47,985 INFO L93 Difference]: Finished difference Result 4707 states and 6575 transitions. [2020-10-13 13:55:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:47,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 13:55:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:47,999 INFO L225 Difference]: With dead ends: 4707 [2020-10-13 13:55:47,999 INFO L226 Difference]: Without dead ends: 3139 [2020-10-13 13:55:48,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-13 13:55:48,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3137. [2020-10-13 13:55:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3137 states. [2020-10-13 13:55:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 4333 transitions. [2020-10-13 13:55:48,203 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 4333 transitions. Word has length 160 [2020-10-13 13:55:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:48,204 INFO L479 AbstractCegarLoop]: Abstraction has 3137 states and 4333 transitions. [2020-10-13 13:55:48,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 4333 transitions. [2020-10-13 13:55:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 13:55:48,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:48,213 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] [2020-10-13 13:55:48,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:55:48,213 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:48,214 INFO L82 PathProgramCache]: Analyzing trace with hash -123131049, now seen corresponding path program 1 times [2020-10-13 13:55:48,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:48,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613977283] [2020-10-13 13:55:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:50,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:53,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:53,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 13:55:53,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:55:53,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:55:53,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:55:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:55:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:55:53,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:53,480 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:55:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:53,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:53,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:53,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:55:53,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:53,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:53,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613977283] [2020-10-13 13:55:53,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:53,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:55:53,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740567856] [2020-10-13 13:55:53,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:55:53,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:53,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:55:53,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:53,550 INFO L87 Difference]: Start difference. First operand 3137 states and 4333 transitions. Second operand 4 states. [2020-10-13 13:55:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:55,860 INFO L93 Difference]: Finished difference Result 4767 states and 6532 transitions. [2020-10-13 13:55:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:55:55,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-13 13:55:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:55,874 INFO L225 Difference]: With dead ends: 4767 [2020-10-13 13:55:55,874 INFO L226 Difference]: Without dead ends: 3282 [2020-10-13 13:55:55,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2020-10-13 13:55:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3280. [2020-10-13 13:55:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3280 states. [2020-10-13 13:55:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3280 states to 3280 states and 4462 transitions. [2020-10-13 13:55:56,096 INFO L78 Accepts]: Start accepts. Automaton has 3280 states and 4462 transitions. Word has length 160 [2020-10-13 13:55:56,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:56,099 INFO L479 AbstractCegarLoop]: Abstraction has 3280 states and 4462 transitions. [2020-10-13 13:55:56,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:55:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3280 states and 4462 transitions. [2020-10-13 13:55:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 13:55:56,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:56,107 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] [2020-10-13 13:55:56,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:55:56,108 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash 996796692, now seen corresponding path program 1 times [2020-10-13 13:55:56,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:56,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748357522] [2020-10-13 13:55:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:56,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:01,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:01,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 13:56:01,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:56:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:56:01,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:56:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:56:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:01,362 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:56:01,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:01,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:01,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:01,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:56:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:01,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748357522] [2020-10-13 13:56:01,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:01,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:01,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458977749] [2020-10-13 13:56:01,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:01,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:01,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:01,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:01,392 INFO L87 Difference]: Start difference. First operand 3280 states and 4462 transitions. Second operand 4 states. [2020-10-13 13:56:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:03,857 INFO L93 Difference]: Finished difference Result 7878 states and 10718 transitions. [2020-10-13 13:56:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:03,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-13 13:56:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:03,878 INFO L225 Difference]: With dead ends: 7878 [2020-10-13 13:56:03,878 INFO L226 Difference]: Without dead ends: 6421 [2020-10-13 13:56:03,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2020-10-13 13:56:04,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 3292. [2020-10-13 13:56:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3292 states. [2020-10-13 13:56:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 4474 transitions. [2020-10-13 13:56:04,092 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 4474 transitions. Word has length 161 [2020-10-13 13:56:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:04,092 INFO L479 AbstractCegarLoop]: Abstraction has 3292 states and 4474 transitions. [2020-10-13 13:56:04,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 4474 transitions. [2020-10-13 13:56:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 13:56:04,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:04,100 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] [2020-10-13 13:56:04,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:56:04,100 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:04,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2014139488, now seen corresponding path program 1 times [2020-10-13 13:56:04,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:04,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53390273] [2020-10-13 13:56:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:05,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:09,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:09,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 13:56:09,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:56:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:56:09,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:56:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:56:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:09,399 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:56:09,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:09,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:09,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:56:09,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:09,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53390273] [2020-10-13 13:56:09,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:09,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:09,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2973459] [2020-10-13 13:56:09,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:09,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:09,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:09,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:09,448 INFO L87 Difference]: Start difference. First operand 3292 states and 4474 transitions. Second operand 5 states. [2020-10-13 13:56:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:10,728 INFO L93 Difference]: Finished difference Result 4047 states and 5495 transitions. [2020-10-13 13:56:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:10,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-13 13:56:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:10,740 INFO L225 Difference]: With dead ends: 4047 [2020-10-13 13:56:10,741 INFO L226 Difference]: Without dead ends: 2566 [2020-10-13 13:56:10,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2020-10-13 13:56:10,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2556. [2020-10-13 13:56:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2556 states. [2020-10-13 13:56:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 3468 transitions. [2020-10-13 13:56:10,876 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 3468 transitions. Word has length 162 [2020-10-13 13:56:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:10,876 INFO L479 AbstractCegarLoop]: Abstraction has 2556 states and 3468 transitions. [2020-10-13 13:56:10,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 3468 transitions. [2020-10-13 13:56:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 13:56:10,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:10,883 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] [2020-10-13 13:56:10,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:56:10,884 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:10,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2068895367, now seen corresponding path program 1 times [2020-10-13 13:56:10,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:10,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840927011] [2020-10-13 13:56:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:12,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:15,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 13:56:15,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:56:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 13:56:15,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:56:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:16,189 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:56:16,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:16,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:16,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:16,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:56:16,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:16,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:16,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:16,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:16,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840927011] [2020-10-13 13:56:16,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:16,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:16,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85816351] [2020-10-13 13:56:16,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:16,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:16,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:16,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:16,233 INFO L87 Difference]: Start difference. First operand 2556 states and 3468 transitions. Second operand 5 states. [2020-10-13 13:56:18,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:18,323 INFO L93 Difference]: Finished difference Result 5613 states and 7692 transitions. [2020-10-13 13:56:18,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:18,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 13:56:18,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:18,335 INFO L225 Difference]: With dead ends: 5613 [2020-10-13 13:56:18,335 INFO L226 Difference]: Without dead ends: 3452 [2020-10-13 13:56:18,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:18,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2020-10-13 13:56:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 3450. [2020-10-13 13:56:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3450 states. [2020-10-13 13:56:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 4638 transitions. [2020-10-13 13:56:18,524 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 4638 transitions. Word has length 166 [2020-10-13 13:56:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:18,524 INFO L479 AbstractCegarLoop]: Abstraction has 3450 states and 4638 transitions. [2020-10-13 13:56:18,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 4638 transitions. [2020-10-13 13:56:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 13:56:18,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:18,529 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] [2020-10-13 13:56:18,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:56:18,530 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:18,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:18,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1959722922, now seen corresponding path program 1 times [2020-10-13 13:56:18,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:18,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910126544] [2020-10-13 13:56:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:18,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:19,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:23,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:56:23,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:56:23,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4905 [2020-10-13 13:56:23,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:56:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:56:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:23,723 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:56:23,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:23,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:23,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:23,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:56:23,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:23,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:23,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910126544] [2020-10-13 13:56:23,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:23,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:23,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357162790] [2020-10-13 13:56:23,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:23,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:23,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:23,765 INFO L87 Difference]: Start difference. First operand 3450 states and 4638 transitions. Second operand 4 states. [2020-10-13 13:56:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:26,027 INFO L93 Difference]: Finished difference Result 8769 states and 11945 transitions. [2020-10-13 13:56:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:26,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-13 13:56:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:26,048 INFO L225 Difference]: With dead ends: 8769 [2020-10-13 13:56:26,048 INFO L226 Difference]: Without dead ends: 6366 [2020-10-13 13:56:26,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2020-10-13 13:56:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 6364. [2020-10-13 13:56:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6364 states. [2020-10-13 13:56:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6364 states to 6364 states and 8493 transitions. [2020-10-13 13:56:26,370 INFO L78 Accepts]: Start accepts. Automaton has 6364 states and 8493 transitions. Word has length 168 [2020-10-13 13:56:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:26,370 INFO L479 AbstractCegarLoop]: Abstraction has 6364 states and 8493 transitions. [2020-10-13 13:56:26,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:26,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6364 states and 8493 transitions. [2020-10-13 13:56:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 13:56:26,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:26,379 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] [2020-10-13 13:56:26,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:56:26,379 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:26,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1156247539, now seen corresponding path program 1 times [2020-10-13 13:56:26,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:26,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054197481] [2020-10-13 13:56:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:31,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:56:31,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:56:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:56:31,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:56:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:31,666 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:56:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:31,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:31,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:31,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:56:31,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:31,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054197481] [2020-10-13 13:56:31,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:31,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:31,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778585823] [2020-10-13 13:56:31,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:31,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:31,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:31,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:31,718 INFO L87 Difference]: Start difference. First operand 6364 states and 8493 transitions. Second operand 5 states. [2020-10-13 13:56:33,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:33,697 INFO L93 Difference]: Finished difference Result 14011 states and 18789 transitions. [2020-10-13 13:56:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:33,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 13:56:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:33,717 INFO L225 Difference]: With dead ends: 14011 [2020-10-13 13:56:33,717 INFO L226 Difference]: Without dead ends: 9814 [2020-10-13 13:56:33,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9814 states. [2020-10-13 13:56:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9814 to 6350. [2020-10-13 13:56:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6350 states. [2020-10-13 13:56:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6350 states to 6350 states and 8471 transitions. [2020-10-13 13:56:34,150 INFO L78 Accepts]: Start accepts. Automaton has 6350 states and 8471 transitions. Word has length 168 [2020-10-13 13:56:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:34,150 INFO L479 AbstractCegarLoop]: Abstraction has 6350 states and 8471 transitions. [2020-10-13 13:56:34,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:34,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6350 states and 8471 transitions. [2020-10-13 13:56:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 13:56:34,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:34,156 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] [2020-10-13 13:56:34,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:56:34,156 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:34,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1446682736, now seen corresponding path program 1 times [2020-10-13 13:56:34,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:34,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382602699] [2020-10-13 13:56:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:34,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:38,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 13:56:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:56:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3894 [2020-10-13 13:56:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:56:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:56:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:38,280 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:56:38,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:38,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:38,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:56:38,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:38,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:38,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:38,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:38,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382602699] [2020-10-13 13:56:38,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:38,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:38,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138544777] [2020-10-13 13:56:38,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:38,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:38,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:38,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:38,316 INFO L87 Difference]: Start difference. First operand 6350 states and 8471 transitions. Second operand 4 states. [2020-10-13 13:56:40,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:40,000 INFO L93 Difference]: Finished difference Result 9986 states and 13375 transitions. [2020-10-13 13:56:40,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:40,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-13 13:56:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:40,018 INFO L225 Difference]: With dead ends: 9986 [2020-10-13 13:56:40,018 INFO L226 Difference]: Without dead ends: 7731 [2020-10-13 13:56:40,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2020-10-13 13:56:40,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 6244. [2020-10-13 13:56:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6244 states. [2020-10-13 13:56:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6244 states to 6244 states and 8345 transitions. [2020-10-13 13:56:40,449 INFO L78 Accepts]: Start accepts. Automaton has 6244 states and 8345 transitions. Word has length 169 [2020-10-13 13:56:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:40,449 INFO L479 AbstractCegarLoop]: Abstraction has 6244 states and 8345 transitions. [2020-10-13 13:56:40,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 6244 states and 8345 transitions. [2020-10-13 13:56:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 13:56:40,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:40,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:40,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:56:40,456 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:40,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1860249519, now seen corresponding path program 1 times [2020-10-13 13:56:40,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:40,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039369505] [2020-10-13 13:56:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:41,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:43,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:43,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:45,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:45,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 13:56:45,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:56:45,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:56:45,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:56:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:56:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:45,759 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:56:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:45,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:45,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:45,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:56:45,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:45,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039369505] [2020-10-13 13:56:45,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:45,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:45,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613361828] [2020-10-13 13:56:45,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:45,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:45,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:45,798 INFO L87 Difference]: Start difference. First operand 6244 states and 8345 transitions. Second operand 5 states. [2020-10-13 13:56:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:47,232 INFO L93 Difference]: Finished difference Result 10190 states and 13659 transitions. [2020-10-13 13:56:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:47,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 13:56:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:47,241 INFO L225 Difference]: With dead ends: 10190 [2020-10-13 13:56:47,241 INFO L226 Difference]: Without dead ends: 5182 [2020-10-13 13:56:47,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2020-10-13 13:56:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 5176. [2020-10-13 13:56:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5176 states. [2020-10-13 13:56:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 6890 transitions. [2020-10-13 13:56:47,701 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 6890 transitions. Word has length 170 [2020-10-13 13:56:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:47,701 INFO L479 AbstractCegarLoop]: Abstraction has 5176 states and 6890 transitions. [2020-10-13 13:56:47,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 6890 transitions. [2020-10-13 13:56:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 13:56:47,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:47,706 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] [2020-10-13 13:56:47,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:56:47,707 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:47,707 INFO L82 PathProgramCache]: Analyzing trace with hash -595726274, now seen corresponding path program 1 times [2020-10-13 13:56:47,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:47,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177058857] [2020-10-13 13:56:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:52,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 13:56:52,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:56:52,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:56:52,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 13:56:52,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:53,001 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:56:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:53,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:53,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:53,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:56:53,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:53,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177058857] [2020-10-13 13:56:53,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:53,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:53,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686368993] [2020-10-13 13:56:53,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:53,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:53,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:53,049 INFO L87 Difference]: Start difference. First operand 5176 states and 6890 transitions. Second operand 5 states. [2020-10-13 13:56:55,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:55,583 INFO L93 Difference]: Finished difference Result 6665 states and 8922 transitions. [2020-10-13 13:56:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:55,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 13:56:55,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:55,591 INFO L225 Difference]: With dead ends: 6665 [2020-10-13 13:56:55,591 INFO L226 Difference]: Without dead ends: 5178 [2020-10-13 13:56:55,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states. [2020-10-13 13:56:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 5124. [2020-10-13 13:56:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5124 states. [2020-10-13 13:56:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 6815 transitions. [2020-10-13 13:56:55,974 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 6815 transitions. Word has length 174 [2020-10-13 13:56:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:55,974 INFO L479 AbstractCegarLoop]: Abstraction has 5124 states and 6815 transitions. [2020-10-13 13:56:55,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 6815 transitions. [2020-10-13 13:56:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 13:56:55,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:55,979 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] [2020-10-13 13:56:55,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:56:55,979 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1711616883, now seen corresponding path program 1 times [2020-10-13 13:56:55,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:55,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603682571] [2020-10-13 13:56:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:01,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:01,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 13:57:01,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:57:01,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 13:57:01,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:57:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 13:57:01,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:01,272 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:57:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:01,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:01,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:01,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:57:01,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:01,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603682571] [2020-10-13 13:57:01,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:01,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:01,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643913661] [2020-10-13 13:57:01,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:01,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:01,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:01,317 INFO L87 Difference]: Start difference. First operand 5124 states and 6815 transitions. Second operand 5 states. [2020-10-13 13:57:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:03,205 INFO L93 Difference]: Finished difference Result 7885 states and 10579 transitions. [2020-10-13 13:57:03,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:03,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-13 13:57:03,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:03,211 INFO L225 Difference]: With dead ends: 7885 [2020-10-13 13:57:03,212 INFO L226 Difference]: Without dead ends: 4788 [2020-10-13 13:57:03,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2020-10-13 13:57:03,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4651. [2020-10-13 13:57:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2020-10-13 13:57:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 6141 transitions. [2020-10-13 13:57:03,502 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 6141 transitions. Word has length 176 [2020-10-13 13:57:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:03,503 INFO L479 AbstractCegarLoop]: Abstraction has 4651 states and 6141 transitions. [2020-10-13 13:57:03,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 6141 transitions. [2020-10-13 13:57:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 13:57:03,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:03,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:03,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:57:03,510 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:03,510 INFO L82 PathProgramCache]: Analyzing trace with hash 302317697, now seen corresponding path program 1 times [2020-10-13 13:57:03,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:03,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339964375] [2020-10-13 13:57:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:04,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:08,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:08,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:57:08,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:57:08,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:57:08,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 13:57:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 13:57:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:08,761 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:57:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:08,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:08,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:57:08,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:08,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339964375] [2020-10-13 13:57:08,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:08,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:08,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444018077] [2020-10-13 13:57:08,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:08,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:08,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:08,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:08,797 INFO L87 Difference]: Start difference. First operand 4651 states and 6141 transitions. Second operand 4 states. [2020-10-13 13:57:10,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:10,703 INFO L93 Difference]: Finished difference Result 10817 states and 14705 transitions. [2020-10-13 13:57:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:57:10,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-13 13:57:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:10,710 INFO L225 Difference]: With dead ends: 10817 [2020-10-13 13:57:10,710 INFO L226 Difference]: Without dead ends: 8070 [2020-10-13 13:57:10,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2020-10-13 13:57:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 8068. [2020-10-13 13:57:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8068 states. [2020-10-13 13:57:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8068 states to 8068 states and 10742 transitions. [2020-10-13 13:57:11,216 INFO L78 Accepts]: Start accepts. Automaton has 8068 states and 10742 transitions. Word has length 178 [2020-10-13 13:57:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:11,216 INFO L479 AbstractCegarLoop]: Abstraction has 8068 states and 10742 transitions. [2020-10-13 13:57:11,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:57:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 8068 states and 10742 transitions. [2020-10-13 13:57:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 13:57:11,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:11,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:11,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:57:11,224 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:11,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:11,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1297363044, now seen corresponding path program 1 times [2020-10-13 13:57:11,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:11,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417850589] [2020-10-13 13:57:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:16,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:16,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:57:16,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:57:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:57:16,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:57:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:57:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 13:57:16,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:16,488 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:57:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:16,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:16,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:16,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:57:16,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:57:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:16,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417850589] [2020-10-13 13:57:16,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:16,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:16,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885163145] [2020-10-13 13:57:16,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:57:16,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:16,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:57:16,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:16,544 INFO L87 Difference]: Start difference. First operand 8068 states and 10742 transitions. Second operand 6 states. [2020-10-13 13:57:16,788 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 13:57:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:18,424 INFO L93 Difference]: Finished difference Result 10977 states and 14843 transitions. [2020-10-13 13:57:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:57:18,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-10-13 13:57:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:18,430 INFO L225 Difference]: With dead ends: 10977 [2020-10-13 13:57:18,430 INFO L226 Difference]: Without dead ends: 4651 [2020-10-13 13:57:18,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:57:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2020-10-13 13:57:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 4651. [2020-10-13 13:57:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2020-10-13 13:57:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 6063 transitions. [2020-10-13 13:57:18,791 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 6063 transitions. Word has length 178 [2020-10-13 13:57:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:18,791 INFO L479 AbstractCegarLoop]: Abstraction has 4651 states and 6063 transitions. [2020-10-13 13:57:18,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:57:18,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 6063 transitions. [2020-10-13 13:57:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 13:57:18,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:18,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:18,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:57:18,796 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:18,796 INFO L82 PathProgramCache]: Analyzing trace with hash -167312228, now seen corresponding path program 1 times [2020-10-13 13:57:18,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:18,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982057762] [2020-10-13 13:57:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:23,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:57:23,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:57:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:57:23,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:57:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:57:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 13:57:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:24,342 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 24 [2020-10-13 13:57:24,586 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-13 13:57:24,724 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-13 13:57:25,196 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 57 [2020-10-13 13:57:25,707 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:57:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:25,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:25,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:25,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:57:25,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:25,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982057762] [2020-10-13 13:57:25,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:25,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 13:57:25,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172184912] [2020-10-13 13:57:25,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:57:25,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:25,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:57:25,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:57:25,832 INFO L87 Difference]: Start difference. First operand 4651 states and 6063 transitions. Second operand 19 states. [2020-10-13 13:57:26,146 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:57:27,228 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-10-13 13:57:27,814 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2020-10-13 13:57:28,210 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 88 [2020-10-13 13:57:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:36,649 INFO L93 Difference]: Finished difference Result 16995 states and 23250 transitions. [2020-10-13 13:57:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 13:57:36,650 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 178 [2020-10-13 13:57:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:36,668 INFO L225 Difference]: With dead ends: 16995 [2020-10-13 13:57:36,668 INFO L226 Difference]: Without dead ends: 15685 [2020-10-13 13:57:36,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 13:57:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15685 states. [2020-10-13 13:57:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15685 to 5090. [2020-10-13 13:57:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5090 states. [2020-10-13 13:57:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 6584 transitions. [2020-10-13 13:57:37,270 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 6584 transitions. Word has length 178 [2020-10-13 13:57:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:37,271 INFO L479 AbstractCegarLoop]: Abstraction has 5090 states and 6584 transitions. [2020-10-13 13:57:37,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:57:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 6584 transitions. [2020-10-13 13:57:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 13:57:37,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:37,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:37,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:57:37,276 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:37,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:37,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1875839197, now seen corresponding path program 1 times [2020-10-13 13:57:37,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:37,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24371320] [2020-10-13 13:57:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:37,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:42,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:57:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:57:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:57:42,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:57:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:57:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 13:57:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:42,824 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 35 [2020-10-13 13:57:43,397 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-13 13:57:43,992 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:57:43,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:43,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:44,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:57:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:44,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24371320] [2020-10-13 13:57:44,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:44,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-13 13:57:44,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116237938] [2020-10-13 13:57:44,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 13:57:44,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:44,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 13:57:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:57:44,154 INFO L87 Difference]: Start difference. First operand 5090 states and 6584 transitions. Second operand 20 states. [2020-10-13 13:57:44,439 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-13 13:57:45,122 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-13 13:57:45,396 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-13 13:57:46,134 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-13 13:57:46,886 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-13 13:57:47,302 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-10-13 13:57:47,642 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-13 13:57:48,969 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2020-10-13 13:57:49,622 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-10-13 13:57:50,215 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 88 [2020-10-13 13:57:50,768 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-13 13:57:52,054 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2020-10-13 13:57:52,821 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2020-10-13 13:57:53,510 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2020-10-13 13:57:54,079 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2020-10-13 13:57:54,675 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-10-13 13:57:55,207 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2020-10-13 13:57:55,980 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2020-10-13 13:57:56,611 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2020-10-13 13:57:57,279 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2020-10-13 13:57:57,861 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2020-10-13 13:57:58,715 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2020-10-13 13:57:59,677 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2020-10-13 13:58:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:05,822 INFO L93 Difference]: Finished difference Result 20872 states and 28612 transitions. [2020-10-13 13:58:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 13:58:05,824 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 178 [2020-10-13 13:58:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:05,848 INFO L225 Difference]: With dead ends: 20872 [2020-10-13 13:58:05,848 INFO L226 Difference]: Without dead ends: 20134 [2020-10-13 13:58:05,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=461, Invalid=1891, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 13:58:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20134 states. [2020-10-13 13:58:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20134 to 6419. [2020-10-13 13:58:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6419 states. [2020-10-13 13:58:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 8167 transitions. [2020-10-13 13:58:06,688 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 8167 transitions. Word has length 178 [2020-10-13 13:58:06,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:06,689 INFO L479 AbstractCegarLoop]: Abstraction has 6419 states and 8167 transitions. [2020-10-13 13:58:06,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 13:58:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 8167 transitions. [2020-10-13 13:58:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 13:58:06,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:06,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:06,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:58:06,695 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:06,696 INFO L82 PathProgramCache]: Analyzing trace with hash -579100709, now seen corresponding path program 1 times [2020-10-13 13:58:06,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:06,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154571043] [2020-10-13 13:58:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:08,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:08,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:58:08,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:58:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1824 [2020-10-13 13:58:08,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:58:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 13:58:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:08,820 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:58:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:08,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:08,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:08,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:08,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:58:08,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:08,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154571043] [2020-10-13 13:58:08,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:08,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:08,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553075042] [2020-10-13 13:58:08,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:08,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:08,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:08,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:08,862 INFO L87 Difference]: Start difference. First operand 6419 states and 8167 transitions. Second operand 5 states. [2020-10-13 13:58:09,096 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 13:58:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:12,959 INFO L93 Difference]: Finished difference Result 12925 states and 17571 transitions. [2020-10-13 13:58:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:58:12,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-13 13:58:12,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:12,971 INFO L225 Difference]: With dead ends: 12925 [2020-10-13 13:58:12,971 INFO L226 Difference]: Without dead ends: 11319 [2020-10-13 13:58:12,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11319 states. [2020-10-13 13:58:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11319 to 11315. [2020-10-13 13:58:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11315 states. [2020-10-13 13:58:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11315 states to 11315 states and 15022 transitions. [2020-10-13 13:58:14,513 INFO L78 Accepts]: Start accepts. Automaton has 11315 states and 15022 transitions. Word has length 178 [2020-10-13 13:58:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:14,513 INFO L479 AbstractCegarLoop]: Abstraction has 11315 states and 15022 transitions. [2020-10-13 13:58:14,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:14,513 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states and 15022 transitions. [2020-10-13 13:58:14,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 13:58:14,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:14,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:14,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 13:58:14,523 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:14,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1074022637, now seen corresponding path program 1 times [2020-10-13 13:58:14,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:14,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513070103] [2020-10-13 13:58:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:14,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:16,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:16,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:58:16,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:58:16,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-10-13 13:58:16,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:58:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:58:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 13:58:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:16,508 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:58:16,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:16,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:16,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:16,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:58:16,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:16,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513070103] [2020-10-13 13:58:16,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:16,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:58:16,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559257253] [2020-10-13 13:58:16,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:58:16,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:16,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:58:16,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:16,567 INFO L87 Difference]: Start difference. First operand 11315 states and 15022 transitions. Second operand 6 states.