/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:31:26,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:31:26,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:31:26,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:31:26,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:31:26,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:31:26,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:31:26,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:31:26,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:31:26,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:31:26,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:31:26,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:31:26,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:31:26,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:31:26,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:31:26,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:31:26,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:31:26,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:31:26,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:31:26,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:31:26,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:31:26,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:31:26,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:31:26,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:31:26,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:31:26,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:31:26,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:31:26,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:31:26,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:31:26,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:31:26,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:31:26,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:31:26,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:31:26,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:31:26,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:31:26,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:31:26,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:31:26,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:31:26,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:31:26,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:31:26,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:31:26,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:31:26,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:31:26,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:31:26,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:31:26,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:31:26,342 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:31:26,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:31:26,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:31:26,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:31:26,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:31:26,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:31:26,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:31:26,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:31:26,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:31:26,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:31:26,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:31:26,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:31:26,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:31:26,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:31:26,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:31:26,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:31:26,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:31:26,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:31:26,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:31:26,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:31:26,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:31:26,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:31:26,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:31:26,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:31:26,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:31:26,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:31:26,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:31:26,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:31:26,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:31:26,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:31:26,674 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:31:26,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:31:26,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ed14392e/b4b1cf6578134bf58003a2e511934b3a/FLAGadf57c5ac [2020-10-12 19:31:27,222 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:31:27,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:31:27,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ed14392e/b4b1cf6578134bf58003a2e511934b3a/FLAGadf57c5ac [2020-10-12 19:31:27,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ed14392e/b4b1cf6578134bf58003a2e511934b3a [2020-10-12 19:31:27,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:31:27,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:31:27,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:31:27,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:31:27,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:31:27,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:31:27" (1/1) ... [2020-10-12 19:31:27,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d31571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:27, skipping insertion in model container [2020-10-12 19:31:27,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:31:27" (1/1) ... [2020-10-12 19:31:27,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:31:27,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:31:28,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:31:28,424 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:31:28,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:31:28,694 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:31:28,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28 WrapperNode [2020-10-12 19:31:28,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:31:28,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:31:28,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:31:28,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:31:28,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (1/1) ... [2020-10-12 19:31:28,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (1/1) ... [2020-10-12 19:31:28,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (1/1) ... [2020-10-12 19:31:28,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (1/1) ... [2020-10-12 19:31:28,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (1/1) ... [2020-10-12 19:31:28,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (1/1) ... [2020-10-12 19:31:28,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (1/1) ... [2020-10-12 19:31:28,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:31:28,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:31:28,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:31:28,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:31:28,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:31:28,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:31:28,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:31:28,902 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:31:28,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:31:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:31:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:31:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:31:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:31:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:31:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:31:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:31:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:31:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:31:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:31:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:31:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:31:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:31:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:31:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:31:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:31:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:31:30,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:31:30,450 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:31:30,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:31:30 BoogieIcfgContainer [2020-10-12 19:31:30,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:31:30,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:31:30,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:31:30,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:31:30,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:31:27" (1/3) ... [2020-10-12 19:31:30,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fdaeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:31:30, skipping insertion in model container [2020-10-12 19:31:30,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:28" (2/3) ... [2020-10-12 19:31:30,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fdaeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:31:30, skipping insertion in model container [2020-10-12 19:31:30,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:31:30" (3/3) ... [2020-10-12 19:31:30,466 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:31:30,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:31:30,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-12 19:31:30,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-12 19:31:30,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:31:30,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:31:30,534 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:31:30,534 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:31:30,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:31:30,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:31:30,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:31:30,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:31:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-10-12 19:31:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:31:30,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:30,582 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] [2020-10-12 19:31:30,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:30,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2049464648, now seen corresponding path program 1 times [2020-10-12 19:31:30,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:30,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452063137] [2020-10-12 19:31:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:31,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:32,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:34,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:34,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:35,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:35,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:31:35,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:31:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:31:35,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:31:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 19:31:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 19:31:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:31:36,647 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:31:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:36,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:36,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:36,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:36,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:36,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:31:36,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:36,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:36,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452063137] [2020-10-12 19:31:36,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:36,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:31:36,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14545410] [2020-10-12 19:31:36,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:31:36,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:36,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:31:36,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:31:36,728 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 9 states. [2020-10-12 19:31:37,129 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-12 19:31:40,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:40,505 INFO L93 Difference]: Finished difference Result 844 states and 1383 transitions. [2020-10-12 19:31:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:31:40,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-12 19:31:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:40,538 INFO L225 Difference]: With dead ends: 844 [2020-10-12 19:31:40,538 INFO L226 Difference]: Without dead ends: 678 [2020-10-12 19:31:40,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:31:40,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-12 19:31:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 390. [2020-10-12 19:31:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-10-12 19:31:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 486 transitions. [2020-10-12 19:31:40,655 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 486 transitions. Word has length 63 [2020-10-12 19:31:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:40,656 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 486 transitions. [2020-10-12 19:31:40,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:31:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 486 transitions. [2020-10-12 19:31:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:31:40,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:40,660 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] [2020-10-12 19:31:40,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:31:40,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:40,662 INFO L82 PathProgramCache]: Analyzing trace with hash 804624401, now seen corresponding path program 1 times [2020-10-12 19:31:40,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:40,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79360496] [2020-10-12 19:31:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:40,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:45,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:45,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:31:45,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:31:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 19:31:45,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:31:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:31:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 19:31:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:46,211 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:31:46,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:46,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:46,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:46,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:31:46,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:46,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79360496] [2020-10-12 19:31:46,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:46,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:31:46,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523734606] [2020-10-12 19:31:46,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:31:46,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:46,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:31:46,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:31:46,288 INFO L87 Difference]: Start difference. First operand 390 states and 486 transitions. Second operand 7 states. [2020-10-12 19:31:46,647 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-12 19:31:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:48,755 INFO L93 Difference]: Finished difference Result 1508 states and 2024 transitions. [2020-10-12 19:31:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:31:48,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-12 19:31:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:48,767 INFO L225 Difference]: With dead ends: 1508 [2020-10-12 19:31:48,767 INFO L226 Difference]: Without dead ends: 1254 [2020-10-12 19:31:48,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:31:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2020-10-12 19:31:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 651. [2020-10-12 19:31:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-12 19:31:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 882 transitions. [2020-10-12 19:31:48,824 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 882 transitions. Word has length 63 [2020-10-12 19:31:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:48,824 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 882 transitions. [2020-10-12 19:31:48,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:31:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 882 transitions. [2020-10-12 19:31:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:31:48,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:48,828 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] [2020-10-12 19:31:48,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:31:48,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:48,829 INFO L82 PathProgramCache]: Analyzing trace with hash 711211391, now seen corresponding path program 1 times [2020-10-12 19:31:48,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:48,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897679500] [2020-10-12 19:31:48,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:48,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:48,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:49,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:53,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:31:53,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:31:53,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:31:53,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:31:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:31:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:31:54,574 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:31:54,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:54,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:54,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:54,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:54,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:31:54,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:54,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897679500] [2020-10-12 19:31:54,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:54,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:31:54,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217988334] [2020-10-12 19:31:54,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:31:54,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:54,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:31:54,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:31:54,639 INFO L87 Difference]: Start difference. First operand 651 states and 882 transitions. Second operand 10 states. [2020-10-12 19:31:55,577 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 246 [2020-10-12 19:31:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:59,374 INFO L93 Difference]: Finished difference Result 2421 states and 3363 transitions. [2020-10-12 19:31:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:31:59,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-12 19:31:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:59,389 INFO L225 Difference]: With dead ends: 2421 [2020-10-12 19:31:59,390 INFO L226 Difference]: Without dead ends: 2180 [2020-10-12 19:31:59,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:31:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2020-10-12 19:31:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 655. [2020-10-12 19:31:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-10-12 19:31:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 886 transitions. [2020-10-12 19:31:59,470 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 886 transitions. Word has length 64 [2020-10-12 19:31:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:59,473 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 886 transitions. [2020-10-12 19:31:59,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:31:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 886 transitions. [2020-10-12 19:31:59,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:31:59,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:59,481 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] [2020-10-12 19:31:59,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:31:59,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:59,482 INFO L82 PathProgramCache]: Analyzing trace with hash -141381272, now seen corresponding path program 1 times [2020-10-12 19:31:59,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:59,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950656457] [2020-10-12 19:31:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:59,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:01,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:04,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:04,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:32:04,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:32:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:32:04,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:32:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:32:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:32:04,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:05,026 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:32:05,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:05,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:05,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:05,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:05,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:32:05,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:32:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:32:05,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:05,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950656457] [2020-10-12 19:32:05,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:05,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:32:05,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311832449] [2020-10-12 19:32:05,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:32:05,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:05,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:32:05,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:32:05,071 INFO L87 Difference]: Start difference. First operand 655 states and 886 transitions. Second operand 12 states. [2020-10-12 19:32:05,477 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-12 19:32:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:11,034 INFO L93 Difference]: Finished difference Result 3155 states and 4510 transitions. [2020-10-12 19:32:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 19:32:11,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-12 19:32:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:11,048 INFO L225 Difference]: With dead ends: 3155 [2020-10-12 19:32:11,048 INFO L226 Difference]: Without dead ends: 2660 [2020-10-12 19:32:11,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:32:11,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2020-10-12 19:32:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1146. [2020-10-12 19:32:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2020-10-12 19:32:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1650 transitions. [2020-10-12 19:32:11,160 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1650 transitions. Word has length 64 [2020-10-12 19:32:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:11,162 INFO L479 AbstractCegarLoop]: Abstraction has 1146 states and 1650 transitions. [2020-10-12 19:32:11,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:32:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1650 transitions. [2020-10-12 19:32:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:32:11,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:11,165 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] [2020-10-12 19:32:11,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:32:11,166 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:32:11,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:11,168 INFO L82 PathProgramCache]: Analyzing trace with hash 956094724, now seen corresponding path program 1 times [2020-10-12 19:32:11,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:11,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953824162] [2020-10-12 19:32:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:16,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:16,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:32:16,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:32:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:32:16,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:32:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:32:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:32:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:16,626 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-10-12 19:32:17,274 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:32:17,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:17,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:17,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:17,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:17,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:32:17,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:32:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:32:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:32:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:17,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953824162] [2020-10-12 19:32:17,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:17,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:32:17,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354242046] [2020-10-12 19:32:17,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:32:17,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:32:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:32:17,374 INFO L87 Difference]: Start difference. First operand 1146 states and 1650 transitions. Second operand 12 states. [2020-10-12 19:32:18,266 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 249 [2020-10-12 19:32:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:21,460 INFO L93 Difference]: Finished difference Result 4436 states and 6593 transitions. [2020-10-12 19:32:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:32:21,462 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-12 19:32:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:21,479 INFO L225 Difference]: With dead ends: 4436 [2020-10-12 19:32:21,479 INFO L226 Difference]: Without dead ends: 3732 [2020-10-12 19:32:21,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:32:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2020-10-12 19:32:21,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 1163. [2020-10-12 19:32:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2020-10-12 19:32:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1674 transitions. [2020-10-12 19:32:21,622 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1674 transitions. Word has length 65 [2020-10-12 19:32:21,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:21,623 INFO L479 AbstractCegarLoop]: Abstraction has 1163 states and 1674 transitions. [2020-10-12 19:32:21,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:32:21,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1674 transitions. [2020-10-12 19:32:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:32:21,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:21,626 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] [2020-10-12 19:32:21,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:32:21,627 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:32:21,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:21,627 INFO L82 PathProgramCache]: Analyzing trace with hash -288745523, now seen corresponding path program 1 times [2020-10-12 19:32:21,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:21,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584373548] [2020-10-12 19:32:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:21,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:21,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:23,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:26,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:32:26,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-12 19:32:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:32:26,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:32:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:32:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:32:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:27,127 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:32:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:27,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:27,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:32:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:32:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:32:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:27,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584373548] [2020-10-12 19:32:27,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:27,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:32:27,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339337780] [2020-10-12 19:32:27,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:32:27,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:27,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:32:27,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:32:27,162 INFO L87 Difference]: Start difference. First operand 1163 states and 1674 transitions. Second operand 12 states. [2020-10-12 19:32:27,953 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 230 [2020-10-12 19:32:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:33,960 INFO L93 Difference]: Finished difference Result 9489 states and 14235 transitions. [2020-10-12 19:32:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-12 19:32:33,960 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-12 19:32:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:33,995 INFO L225 Difference]: With dead ends: 9489 [2020-10-12 19:32:33,996 INFO L226 Difference]: Without dead ends: 8787 [2020-10-12 19:32:34,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=528, Invalid=2124, Unknown=0, NotChecked=0, Total=2652 [2020-10-12 19:32:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8787 states. [2020-10-12 19:32:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8787 to 1381. [2020-10-12 19:32:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1381 states. [2020-10-12 19:32:34,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1976 transitions. [2020-10-12 19:32:34,271 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1976 transitions. Word has length 65 [2020-10-12 19:32:34,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:34,273 INFO L479 AbstractCegarLoop]: Abstraction has 1381 states and 1976 transitions. [2020-10-12 19:32:34,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:32:34,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1976 transitions. [2020-10-12 19:32:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:32:34,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:34,275 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] [2020-10-12 19:32:34,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:32:34,276 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:32:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:34,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1141338186, now seen corresponding path program 1 times [2020-10-12 19:32:34,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:34,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119271568] [2020-10-12 19:32:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:34,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:35,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:38,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:39,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:39,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:32:39,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:32:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:32:39,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:32:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:32:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:32:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:39,839 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:32:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:39,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:39,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:39,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:32:39,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:32:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:32:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:39,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119271568] [2020-10-12 19:32:39,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:39,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:32:39,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968893956] [2020-10-12 19:32:39,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:32:39,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:39,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:32:39,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:32:39,907 INFO L87 Difference]: Start difference. First operand 1381 states and 1976 transitions. Second operand 13 states. [2020-10-12 19:32:40,308 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-12 19:32:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:44,208 INFO L93 Difference]: Finished difference Result 5034 states and 7478 transitions. [2020-10-12 19:32:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:32:44,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-12 19:32:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:44,227 INFO L225 Difference]: With dead ends: 5034 [2020-10-12 19:32:44,227 INFO L226 Difference]: Without dead ends: 4188 [2020-10-12 19:32:44,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:32:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2020-10-12 19:32:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 1524. [2020-10-12 19:32:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1524 states. [2020-10-12 19:32:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2192 transitions. [2020-10-12 19:32:44,546 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2192 transitions. Word has length 65 [2020-10-12 19:32:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:44,547 INFO L479 AbstractCegarLoop]: Abstraction has 1524 states and 2192 transitions. [2020-10-12 19:32:44,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:32:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2192 transitions. [2020-10-12 19:32:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:32:44,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:44,550 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] [2020-10-12 19:32:44,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:32:44,550 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:32:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1585294306, now seen corresponding path program 1 times [2020-10-12 19:32:44,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:44,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698576767] [2020-10-12 19:32:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:44,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:45,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:49,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:49,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:32:49,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:32:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:32:49,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:32:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:32:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:32:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:49,984 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:32:49,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:50,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:50,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:50,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:50,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:32:50,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:32:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:32:50,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:50,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698576767] [2020-10-12 19:32:50,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:50,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:32:50,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924741599] [2020-10-12 19:32:50,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:32:50,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:32:50,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:32:50,048 INFO L87 Difference]: Start difference. First operand 1524 states and 2192 transitions. Second operand 10 states. [2020-10-12 19:32:50,399 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-12 19:32:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:55,991 INFO L93 Difference]: Finished difference Result 19063 states and 28790 transitions. [2020-10-12 19:32:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 19:32:55,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-12 19:32:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:56,045 INFO L225 Difference]: With dead ends: 19063 [2020-10-12 19:32:56,045 INFO L226 Difference]: Without dead ends: 18049 [2020-10-12 19:32:56,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=404, Invalid=1318, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 19:32:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18049 states. [2020-10-12 19:32:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18049 to 4496. [2020-10-12 19:32:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4496 states. [2020-10-12 19:32:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 6666 transitions. [2020-10-12 19:32:56,905 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 6666 transitions. Word has length 65 [2020-10-12 19:32:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:56,906 INFO L479 AbstractCegarLoop]: Abstraction has 4496 states and 6666 transitions. [2020-10-12 19:32:56,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:32:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 6666 transitions. [2020-10-12 19:32:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:32:56,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:56,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:32:56,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:32:56,910 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:32:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:56,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1844775155, now seen corresponding path program 1 times [2020-10-12 19:32:56,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:56,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953973536] [2020-10-12 19:32:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:00,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:01,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:01,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:33:01,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-12 19:33:01,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:33:01,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:33:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:33:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:33:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:02,520 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:33:02,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:02,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:02,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:33:02,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:33:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:02,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953973536] [2020-10-12 19:33:02,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:02,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:33:02,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513251028] [2020-10-12 19:33:02,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:33:02,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:02,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:33:02,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:33:02,551 INFO L87 Difference]: Start difference. First operand 4496 states and 6666 transitions. Second operand 14 states. [2020-10-12 19:33:03,014 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-12 19:33:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:12,406 INFO L93 Difference]: Finished difference Result 24421 states and 37021 transitions. [2020-10-12 19:33:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:33:12,406 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-12 19:33:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:12,459 INFO L225 Difference]: With dead ends: 24421 [2020-10-12 19:33:12,460 INFO L226 Difference]: Without dead ends: 22933 [2020-10-12 19:33:12,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:33:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22933 states. [2020-10-12 19:33:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22933 to 4513. [2020-10-12 19:33:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4513 states. [2020-10-12 19:33:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 6688 transitions. [2020-10-12 19:33:13,468 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 6688 transitions. Word has length 66 [2020-10-12 19:33:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:13,469 INFO L479 AbstractCegarLoop]: Abstraction has 4513 states and 6688 transitions. [2020-10-12 19:33:13,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:33:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 6688 transitions. [2020-10-12 19:33:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:33:13,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:13,471 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] [2020-10-12 19:33:13,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:33:13,472 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:13,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1205351894, now seen corresponding path program 1 times [2020-10-12 19:33:13,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:13,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013950077] [2020-10-12 19:33:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:13,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:13,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:18,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:18,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:33:18,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 19:33:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:33:18,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:33:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:33:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:33:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:19,095 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:33:19,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:19,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:19,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:33:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:19,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:19,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013950077] [2020-10-12 19:33:19,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:19,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:33:19,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323112047] [2020-10-12 19:33:19,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:33:19,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:19,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:33:19,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:33:19,123 INFO L87 Difference]: Start difference. First operand 4513 states and 6688 transitions. Second operand 14 states. [2020-10-12 19:33:19,562 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-12 19:33:32,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:32,560 INFO L93 Difference]: Finished difference Result 36235 states and 54688 transitions. [2020-10-12 19:33:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-12 19:33:32,560 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-12 19:33:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:32,630 INFO L225 Difference]: With dead ends: 36235 [2020-10-12 19:33:32,630 INFO L226 Difference]: Without dead ends: 34719 [2020-10-12 19:33:32,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=874, Invalid=3682, Unknown=0, NotChecked=0, Total=4556 [2020-10-12 19:33:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34719 states. [2020-10-12 19:33:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34719 to 7375. [2020-10-12 19:33:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7375 states. [2020-10-12 19:33:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 11144 transitions. [2020-10-12 19:33:34,198 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 11144 transitions. Word has length 66 [2020-10-12 19:33:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:34,198 INFO L479 AbstractCegarLoop]: Abstraction has 7375 states and 11144 transitions. [2020-10-12 19:33:34,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:33:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 11144 transitions. [2020-10-12 19:33:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:33:34,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:34,202 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] [2020-10-12 19:33:34,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:33:34,202 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:34,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2142061232, now seen corresponding path program 1 times [2020-10-12 19:33:34,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:34,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426047051] [2020-10-12 19:33:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:38,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:39,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:33:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:33:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:33:39,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 19:33:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:33:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:33:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:39,952 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:33:39,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:39,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:39,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:33:39,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:33:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:33:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:40,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426047051] [2020-10-12 19:33:40,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:40,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 19:33:40,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957351177] [2020-10-12 19:33:40,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 19:33:40,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 19:33:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:33:40,003 INFO L87 Difference]: Start difference. First operand 7375 states and 11144 transitions. Second operand 18 states. [2020-10-12 19:33:41,105 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 247 [2020-10-12 19:33:43,669 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-10-12 19:33:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:52,753 INFO L93 Difference]: Finished difference Result 29993 states and 45531 transitions. [2020-10-12 19:33:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 19:33:52,753 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-10-12 19:33:52,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:52,798 INFO L225 Difference]: With dead ends: 29993 [2020-10-12 19:33:52,799 INFO L226 Difference]: Without dead ends: 24124 [2020-10-12 19:33:52,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=571, Invalid=2291, Unknown=0, NotChecked=0, Total=2862 [2020-10-12 19:33:52,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24124 states. [2020-10-12 19:33:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24124 to 8016. [2020-10-12 19:33:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8016 states. [2020-10-12 19:33:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 12156 transitions. [2020-10-12 19:33:55,279 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 12156 transitions. Word has length 66 [2020-10-12 19:33:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:55,280 INFO L479 AbstractCegarLoop]: Abstraction has 8016 states and 12156 transitions. [2020-10-12 19:33:55,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 19:33:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 12156 transitions. [2020-10-12 19:33:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:33:55,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:55,282 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] [2020-10-12 19:33:55,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:33:55,283 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:55,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:55,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1767857903, now seen corresponding path program 1 times [2020-10-12 19:33:55,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:55,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486009814] [2020-10-12 19:33:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:55,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:55,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:59,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:00,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:00,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:34:00,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:34:00,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:34:00,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:34:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:34:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:00,800 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:34:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:00,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:00,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:34:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:00,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486009814] [2020-10-12 19:34:00,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:00,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:34:00,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924271203] [2020-10-12 19:34:00,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:34:00,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:00,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:34:00,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:34:00,841 INFO L87 Difference]: Start difference. First operand 8016 states and 12156 transitions. Second operand 14 states. [2020-10-12 19:34:01,727 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 236 [2020-10-12 19:34:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:06,930 INFO L93 Difference]: Finished difference Result 14258 states and 21709 transitions. [2020-10-12 19:34:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:34:06,930 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-12 19:34:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:06,943 INFO L225 Difference]: With dead ends: 14258 [2020-10-12 19:34:06,943 INFO L226 Difference]: Without dead ends: 8745 [2020-10-12 19:34:06,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 19:34:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8745 states. [2020-10-12 19:34:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8745 to 3986. [2020-10-12 19:34:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3986 states. [2020-10-12 19:34:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5866 transitions. [2020-10-12 19:34:07,868 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5866 transitions. Word has length 66 [2020-10-12 19:34:07,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:07,869 INFO L479 AbstractCegarLoop]: Abstraction has 3986 states and 5866 transitions. [2020-10-12 19:34:07,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:34:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5866 transitions. [2020-10-12 19:34:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:34:07,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:07,871 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] [2020-10-12 19:34:07,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:34:07,872 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:07,872 INFO L82 PathProgramCache]: Analyzing trace with hash 908065817, now seen corresponding path program 1 times [2020-10-12 19:34:07,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:07,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982910452] [2020-10-12 19:34:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:07,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:11,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:12,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:12,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:34:12,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:34:12,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:34:12,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:34:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:34:12,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:13,617 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:34:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:13,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:34:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:13,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982910452] [2020-10-12 19:34:13,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:13,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:34:13,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49934254] [2020-10-12 19:34:13,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:34:13,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:13,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:34:13,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:34:13,667 INFO L87 Difference]: Start difference. First operand 3986 states and 5866 transitions. Second operand 15 states. [2020-10-12 19:34:14,673 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 245 [2020-10-12 19:34:19,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:19,582 INFO L93 Difference]: Finished difference Result 7750 states and 11563 transitions. [2020-10-12 19:34:19,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:34:19,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-12 19:34:19,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:19,590 INFO L225 Difference]: With dead ends: 7750 [2020-10-12 19:34:19,590 INFO L226 Difference]: Without dead ends: 4319 [2020-10-12 19:34:19,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=276, Invalid=914, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 19:34:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2020-10-12 19:34:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 2856. [2020-10-12 19:34:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-10-12 19:34:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4214 transitions. [2020-10-12 19:34:20,282 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4214 transitions. Word has length 66 [2020-10-12 19:34:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:20,282 INFO L479 AbstractCegarLoop]: Abstraction has 2856 states and 4214 transitions. [2020-10-12 19:34:20,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:34:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4214 transitions. [2020-10-12 19:34:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:34:20,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:20,284 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] [2020-10-12 19:34:20,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:34:20,285 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:20,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:20,285 INFO L82 PathProgramCache]: Analyzing trace with hash -388482966, now seen corresponding path program 1 times [2020-10-12 19:34:20,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:20,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726980116] [2020-10-12 19:34:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:20,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:25,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:25,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:34:25,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:34:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:34:25,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:34:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 19:34:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 19:34:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:25,817 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:34:25,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:25,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:25,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:34:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:25,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726980116] [2020-10-12 19:34:25,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:25,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:34:25,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333546536] [2020-10-12 19:34:25,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:34:25,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:25,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:34:25,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:34:25,856 INFO L87 Difference]: Start difference. First operand 2856 states and 4214 transitions. Second operand 11 states. [2020-10-12 19:34:26,256 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-12 19:34:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:30,770 INFO L93 Difference]: Finished difference Result 9918 states and 14990 transitions. [2020-10-12 19:34:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:34:30,771 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-12 19:34:30,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:30,780 INFO L225 Difference]: With dead ends: 9918 [2020-10-12 19:34:30,780 INFO L226 Difference]: Without dead ends: 7602 [2020-10-12 19:34:30,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:34:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7602 states. [2020-10-12 19:34:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7602 to 3322. [2020-10-12 19:34:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3322 states. [2020-10-12 19:34:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4920 transitions. [2020-10-12 19:34:31,547 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4920 transitions. Word has length 66 [2020-10-12 19:34:31,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:31,547 INFO L479 AbstractCegarLoop]: Abstraction has 3322 states and 4920 transitions. [2020-10-12 19:34:31,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:34:31,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4920 transitions. [2020-10-12 19:34:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 19:34:31,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:31,549 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] [2020-10-12 19:34:31,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:34:31,549 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:31,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash 635711597, now seen corresponding path program 1 times [2020-10-12 19:34:31,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:31,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059932988] [2020-10-12 19:34:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 19:34:36,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:34:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:34:36,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:34:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:34:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:37,221 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:34:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:37,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:37,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:34:37,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:37,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059932988] [2020-10-12 19:34:37,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:37,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:34:37,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003809387] [2020-10-12 19:34:37,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:34:37,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:37,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:34:37,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:34:37,270 INFO L87 Difference]: Start difference. First operand 3322 states and 4920 transitions. Second operand 12 states. [2020-10-12 19:34:37,727 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-12 19:34:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:42,140 INFO L93 Difference]: Finished difference Result 10622 states and 15977 transitions. [2020-10-12 19:34:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:34:42,141 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-12 19:34:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:42,149 INFO L225 Difference]: With dead ends: 10622 [2020-10-12 19:34:42,149 INFO L226 Difference]: Without dead ends: 7754 [2020-10-12 19:34:42,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:34:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2020-10-12 19:34:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 3322. [2020-10-12 19:34:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3322 states. [2020-10-12 19:34:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4917 transitions. [2020-10-12 19:34:42,943 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4917 transitions. Word has length 67 [2020-10-12 19:34:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:42,944 INFO L479 AbstractCegarLoop]: Abstraction has 3322 states and 4917 transitions. [2020-10-12 19:34:42,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4917 transitions. [2020-10-12 19:34:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:34:42,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:42,945 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] [2020-10-12 19:34:42,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:34:42,945 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:42,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2064580620, now seen corresponding path program 1 times [2020-10-12 19:34:42,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:42,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181904035] [2020-10-12 19:34:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:42,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:44,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:47,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:47,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:34:47,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:34:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4961 [2020-10-12 19:34:47,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:34:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 19:34:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:48,474 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:34:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:48,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:48,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:48,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:34:48,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:48,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181904035] [2020-10-12 19:34:48,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:48,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:34:48,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944080572] [2020-10-12 19:34:48,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:34:48,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:48,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:34:48,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:34:48,519 INFO L87 Difference]: Start difference. First operand 3322 states and 4917 transitions. Second operand 13 states. [2020-10-12 19:34:49,373 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 234 [2020-10-12 19:34:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:53,571 INFO L93 Difference]: Finished difference Result 7048 states and 10453 transitions. [2020-10-12 19:34:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:34:53,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 19:34:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:53,578 INFO L225 Difference]: With dead ends: 7048 [2020-10-12 19:34:53,578 INFO L226 Difference]: Without dead ends: 4743 [2020-10-12 19:34:53,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 19:34:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2020-10-12 19:34:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 3316. [2020-10-12 19:34:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3316 states. [2020-10-12 19:34:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 4888 transitions. [2020-10-12 19:34:54,354 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 4888 transitions. Word has length 68 [2020-10-12 19:34:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:54,354 INFO L479 AbstractCegarLoop]: Abstraction has 3316 states and 4888 transitions. [2020-10-12 19:34:54,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:34:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 4888 transitions. [2020-10-12 19:34:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:34:54,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:54,355 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] [2020-10-12 19:34:54,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:34:54,356 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash -875115276, now seen corresponding path program 1 times [2020-10-12 19:34:54,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:54,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441342714] [2020-10-12 19:34:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:56,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:56,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:58,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:58,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:59,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:59,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:34:59,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 19:34:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:34:59,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:34:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:34:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:00,329 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-12 19:35:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:00,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:00,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:00,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:00,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:35:00,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:35:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:35:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:35:00,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441342714] [2020-10-12 19:35:00,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:00,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 19:35:00,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719406740] [2020-10-12 19:35:00,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:35:00,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:00,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:35:00,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:35:00,384 INFO L87 Difference]: Start difference. First operand 3316 states and 4888 transitions. Second operand 19 states. [2020-10-12 19:35:00,535 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 19:35:01,508 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 247 [2020-10-12 19:35:02,174 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-12 19:35:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:08,178 INFO L93 Difference]: Finished difference Result 7772 states and 11580 transitions. [2020-10-12 19:35:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:35:08,179 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 68 [2020-10-12 19:35:08,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:08,183 INFO L225 Difference]: With dead ends: 7772 [2020-10-12 19:35:08,183 INFO L226 Difference]: Without dead ends: 5040 [2020-10-12 19:35:08,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=329, Invalid=1311, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 19:35:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2020-10-12 19:35:08,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 3305. [2020-10-12 19:35:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3305 states. [2020-10-12 19:35:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4871 transitions. [2020-10-12 19:35:08,968 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4871 transitions. Word has length 68 [2020-10-12 19:35:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:08,969 INFO L479 AbstractCegarLoop]: Abstraction has 3305 states and 4871 transitions. [2020-10-12 19:35:08,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:35:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4871 transitions. [2020-10-12 19:35:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:35:08,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:08,970 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] [2020-10-12 19:35:08,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:35:08,971 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:08,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1319563243, now seen corresponding path program 1 times [2020-10-12 19:35:08,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:08,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216561786] [2020-10-12 19:35:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:09,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking...