/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:13:41,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:13:41,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:13:41,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:13:41,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:13:41,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:13:41,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:13:41,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:13:41,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:13:41,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:13:41,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:13:41,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:13:41,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:13:41,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:13:41,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:13:41,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:13:41,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:13:41,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:13:41,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:13:41,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:13:41,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:13:41,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:13:41,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:13:41,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:13:41,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:13:41,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:13:41,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:13:41,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:13:41,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:13:41,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:13:41,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:13:41,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:13:41,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:13:41,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:13:41,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:13:41,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:13:41,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:13:41,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:13:41,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:13:41,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:13:41,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:13:41,507 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 [2020-10-15 03:13:41,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:13:41,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:13:41,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:13:41,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:13:41,551 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:13:41,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:13:41,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:13:41,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:13:41,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:13:41,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:13:41,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:13:41,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:13:41,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:13:41,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:13:41,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:13:41,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:13:41,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:13:41,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:13:41,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:13:41,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:13:41,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:13:41,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:13:41,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:13:41,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:13:41,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:13:41,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:13:41,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:13:41,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:13:41,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:13:41,558 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:13:41,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:13:41,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:13:41,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:13:41,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:13:41,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:13:41,977 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:13:42,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baef53466/7077594f418b43dbbb0c0340845c9e0c/FLAG7b17c4a6d [2020-10-15 03:13:42,617 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:13:42,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:13:42,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baef53466/7077594f418b43dbbb0c0340845c9e0c/FLAG7b17c4a6d [2020-10-15 03:13:42,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baef53466/7077594f418b43dbbb0c0340845c9e0c [2020-10-15 03:13:42,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:13:42,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:13:42,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:13:42,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:13:42,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:13:42,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:13:42" (1/1) ... [2020-10-15 03:13:42,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:42, skipping insertion in model container [2020-10-15 03:13:42,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:13:42" (1/1) ... [2020-10-15 03:13:42,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:13:43,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:13:43,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:13:43,307 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:13:43,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:13:43,498 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:13:43,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43 WrapperNode [2020-10-15 03:13:43,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:13:43,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:13:43,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:13:43,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:13:43,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (1/1) ... [2020-10-15 03:13:43,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (1/1) ... [2020-10-15 03:13:43,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (1/1) ... [2020-10-15 03:13:43,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (1/1) ... [2020-10-15 03:13:43,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (1/1) ... [2020-10-15 03:13:43,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (1/1) ... [2020-10-15 03:13:43,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (1/1) ... [2020-10-15 03:13:43,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:13:43,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:13:43,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:13:43,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:13:43,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:13:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:13:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:13:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:13:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:13:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:13:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:13:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:13:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:13:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:13:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:13:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:13:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:13:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:13:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:13:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:13:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:13:44,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:13:44,375 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:13:44,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:13:44 BoogieIcfgContainer [2020-10-15 03:13:44,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:13:44,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:13:44,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:13:44,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:13:44,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:13:42" (1/3) ... [2020-10-15 03:13:44,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660bb716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:13:44, skipping insertion in model container [2020-10-15 03:13:44,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:43" (2/3) ... [2020-10-15 03:13:44,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660bb716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:13:44, skipping insertion in model container [2020-10-15 03:13:44,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:13:44" (3/3) ... [2020-10-15 03:13:44,393 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:13:44,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:13:44,417 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:13:44,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:13:44,464 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:13:44,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:13:44,464 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:13:44,464 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:13:44,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:13:44,464 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:13:44,465 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:13:44,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:13:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-10-15 03:13:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 03:13:44,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:44,495 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] [2020-10-15 03:13:44,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:44,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:44,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1464413452, now seen corresponding path program 1 times [2020-10-15 03:13:44,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:44,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43347883] [2020-10-15 03:13:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:47,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:47,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 03:13:47,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:13:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2335 [2020-10-15 03:13:47,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:47,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:47,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:13:47,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:13:47,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:13:47,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:13:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:47,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:47,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:47,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:47,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:47,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:13:47,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:47,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:47,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:47,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:47,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:47,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43347883] [2020-10-15 03:13:47,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:47,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:13:47,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836860973] [2020-10-15 03:13:47,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:13:47,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:47,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:13:47,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:13:47,466 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 6 states. [2020-10-15 03:13:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:48,152 INFO L93 Difference]: Finished difference Result 337 states and 524 transitions. [2020-10-15 03:13:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:13:48,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-15 03:13:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:48,185 INFO L225 Difference]: With dead ends: 337 [2020-10-15 03:13:48,185 INFO L226 Difference]: Without dead ends: 275 [2020-10-15 03:13:48,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:13:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-15 03:13:48,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 105. [2020-10-15 03:13:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-15 03:13:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 152 transitions. [2020-10-15 03:13:48,279 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 152 transitions. Word has length 41 [2020-10-15 03:13:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:48,279 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 152 transitions. [2020-10-15 03:13:48,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:13:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 152 transitions. [2020-10-15 03:13:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 03:13:48,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:48,282 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] [2020-10-15 03:13:48,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:13:48,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:48,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:48,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1678334049, now seen corresponding path program 1 times [2020-10-15 03:13:48,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:48,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361256342] [2020-10-15 03:13:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:52,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:52,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 03:13:52,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:13:52,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4323 [2020-10-15 03:13:52,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:52,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:52,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:13:52,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:13:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:13:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:13:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:52,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:52,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:52,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:13:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:52,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:52,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:52,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361256342] [2020-10-15 03:13:52,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:52,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:13:52,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059182906] [2020-10-15 03:13:52,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:13:52,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:52,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:13:52,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:13:52,824 INFO L87 Difference]: Start difference. First operand 105 states and 152 transitions. Second operand 6 states. [2020-10-15 03:13:53,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:53,422 INFO L93 Difference]: Finished difference Result 461 states and 708 transitions. [2020-10-15 03:13:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:13:53,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-15 03:13:53,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:53,426 INFO L225 Difference]: With dead ends: 461 [2020-10-15 03:13:53,426 INFO L226 Difference]: Without dead ends: 379 [2020-10-15 03:13:53,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:13:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-15 03:13:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 221. [2020-10-15 03:13:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-15 03:13:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 335 transitions. [2020-10-15 03:13:53,452 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 335 transitions. Word has length 43 [2020-10-15 03:13:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:53,452 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 335 transitions. [2020-10-15 03:13:53,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:13:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 335 transitions. [2020-10-15 03:13:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 03:13:53,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:53,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:13:53,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:13:53,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:53,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1654588827, now seen corresponding path program 1 times [2020-10-15 03:13:53,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:53,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832902404] [2020-10-15 03:13:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:56,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 03:13:56,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:13:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3163 [2020-10-15 03:13:56,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:56,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:13:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:13:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:13:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:56,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:56,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:56,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:56,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:13:56,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:56,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:56,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832902404] [2020-10-15 03:13:56,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:56,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:13:56,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737224290] [2020-10-15 03:13:56,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:13:56,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:56,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:13:56,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:13:56,810 INFO L87 Difference]: Start difference. First operand 221 states and 335 transitions. Second operand 6 states. [2020-10-15 03:13:56,958 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-15 03:13:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:57,255 INFO L93 Difference]: Finished difference Result 599 states and 921 transitions. [2020-10-15 03:13:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:13:57,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-15 03:13:57,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:57,258 INFO L225 Difference]: With dead ends: 599 [2020-10-15 03:13:57,259 INFO L226 Difference]: Without dead ends: 481 [2020-10-15 03:13:57,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:13:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-15 03:13:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 341. [2020-10-15 03:13:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-15 03:13:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 525 transitions. [2020-10-15 03:13:57,286 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 525 transitions. Word has length 43 [2020-10-15 03:13:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:57,287 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 525 transitions. [2020-10-15 03:13:57,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:13:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 525 transitions. [2020-10-15 03:13:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 03:13:57,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:57,289 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] [2020-10-15 03:13:57,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:13:57,289 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:57,290 INFO L82 PathProgramCache]: Analyzing trace with hash 574801294, now seen corresponding path program 1 times [2020-10-15 03:13:57,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:57,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258435168] [2020-10-15 03:13:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:57,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:58,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:58,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 03:13:58,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:13:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-15 03:13:58,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:58,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:13:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:13:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:13:58,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:58,780 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-15 03:13:58,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:58,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:58,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:58,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:13:58,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:58,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:58,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258435168] [2020-10-15 03:13:58,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:58,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:13:58,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260307212] [2020-10-15 03:13:58,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:13:58,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:58,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:13:58,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:13:58,813 INFO L87 Difference]: Start difference. First operand 341 states and 525 transitions. Second operand 6 states. [2020-10-15 03:13:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:59,390 INFO L93 Difference]: Finished difference Result 785 states and 1216 transitions. [2020-10-15 03:13:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:13:59,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-15 03:13:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:59,398 INFO L225 Difference]: With dead ends: 785 [2020-10-15 03:13:59,399 INFO L226 Difference]: Without dead ends: 467 [2020-10-15 03:13:59,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:13:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-15 03:13:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 341. [2020-10-15 03:13:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-15 03:13:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 521 transitions. [2020-10-15 03:13:59,431 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 521 transitions. Word has length 43 [2020-10-15 03:13:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:59,432 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 521 transitions. [2020-10-15 03:13:59,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:13:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 521 transitions. [2020-10-15 03:13:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 03:13:59,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:59,434 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] [2020-10-15 03:13:59,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:13:59,435 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:59,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:59,435 INFO L82 PathProgramCache]: Analyzing trace with hash 554751951, now seen corresponding path program 1 times [2020-10-15 03:13:59,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:59,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329968074] [2020-10-15 03:13:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:59,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:00,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:00,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 03:14:00,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:14:00,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-15 03:14:00,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:00,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:14:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:14:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 03:14:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:00,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:00,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:00,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:00,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:14:00,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:00,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:00,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329968074] [2020-10-15 03:14:00,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:00,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:14:00,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134911009] [2020-10-15 03:14:00,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:14:00,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:00,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:14:00,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:14:00,865 INFO L87 Difference]: Start difference. First operand 341 states and 521 transitions. Second operand 4 states. [2020-10-15 03:14:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:01,227 INFO L93 Difference]: Finished difference Result 935 states and 1445 transitions. [2020-10-15 03:14:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:14:01,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-15 03:14:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:01,231 INFO L225 Difference]: With dead ends: 935 [2020-10-15 03:14:01,232 INFO L226 Difference]: Without dead ends: 617 [2020-10-15 03:14:01,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:14:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-15 03:14:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 607. [2020-10-15 03:14:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-10-15 03:14:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 919 transitions. [2020-10-15 03:14:01,280 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 919 transitions. Word has length 43 [2020-10-15 03:14:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:01,281 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 919 transitions. [2020-10-15 03:14:01,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:14:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 919 transitions. [2020-10-15 03:14:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 03:14:01,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:01,283 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] [2020-10-15 03:14:01,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:14:01,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:01,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1619902795, now seen corresponding path program 1 times [2020-10-15 03:14:01,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:01,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255110931] [2020-10-15 03:14:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:01,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:01,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:02,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:02,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 03:14:02,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:14:02,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-10-15 03:14:02,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:02,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:14:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:14:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 03:14:02,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:02,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:02,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:14:02,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:02,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:02,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255110931] [2020-10-15 03:14:02,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:02,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:14:02,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415860981] [2020-10-15 03:14:02,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:14:02,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:02,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:14:02,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:14:02,318 INFO L87 Difference]: Start difference. First operand 607 states and 919 transitions. Second operand 5 states. [2020-10-15 03:14:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:02,878 INFO L93 Difference]: Finished difference Result 1243 states and 1908 transitions. [2020-10-15 03:14:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:14:02,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-15 03:14:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:02,893 INFO L225 Difference]: With dead ends: 1243 [2020-10-15 03:14:02,894 INFO L226 Difference]: Without dead ends: 925 [2020-10-15 03:14:02,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:14:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-10-15 03:14:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 913. [2020-10-15 03:14:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-10-15 03:14:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1381 transitions. [2020-10-15 03:14:03,086 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1381 transitions. Word has length 44 [2020-10-15 03:14:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:03,087 INFO L479 AbstractCegarLoop]: Abstraction has 913 states and 1381 transitions. [2020-10-15 03:14:03,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:14:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1381 transitions. [2020-10-15 03:14:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 03:14:03,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:03,090 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] [2020-10-15 03:14:03,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:14:03,091 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash 69452607, now seen corresponding path program 1 times [2020-10-15 03:14:03,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:03,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293672878] [2020-10-15 03:14:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:03,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:05,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:05,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 03:14:05,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:14:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2554 [2020-10-15 03:14:05,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:05,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:05,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:14:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 03:14:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:05,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:05,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:05,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:05,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:05,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:05,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:14:05,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:05,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:05,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293672878] [2020-10-15 03:14:05,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:05,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:05,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518422352] [2020-10-15 03:14:05,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:05,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:05,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:05,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:05,795 INFO L87 Difference]: Start difference. First operand 913 states and 1381 transitions. Second operand 6 states. [2020-10-15 03:14:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:06,334 INFO L93 Difference]: Finished difference Result 1649 states and 2499 transitions. [2020-10-15 03:14:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:14:06,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-15 03:14:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:06,342 INFO L225 Difference]: With dead ends: 1649 [2020-10-15 03:14:06,343 INFO L226 Difference]: Without dead ends: 1433 [2020-10-15 03:14:06,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:14:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-15 03:14:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1061. [2020-10-15 03:14:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-10-15 03:14:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1608 transitions. [2020-10-15 03:14:06,466 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1608 transitions. Word has length 44 [2020-10-15 03:14:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:06,467 INFO L479 AbstractCegarLoop]: Abstraction has 1061 states and 1608 transitions. [2020-10-15 03:14:06,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1608 transitions. [2020-10-15 03:14:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 03:14:06,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:06,468 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] [2020-10-15 03:14:06,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:14:06,469 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash 637061513, now seen corresponding path program 1 times [2020-10-15 03:14:06,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:06,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658906108] [2020-10-15 03:14:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:07,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:07,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 03:14:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:14:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-15 03:14:07,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:07,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:14:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:14:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:07,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:07,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:07,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:14:07,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:07,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:14:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:07,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:14:07,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:07,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658906108] [2020-10-15 03:14:07,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:07,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:14:07,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341664698] [2020-10-15 03:14:07,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:07,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:07,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:07,328 INFO L87 Difference]: Start difference. First operand 1061 states and 1608 transitions. Second operand 6 states. [2020-10-15 03:14:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:07,767 INFO L93 Difference]: Finished difference Result 2753 states and 4187 transitions. [2020-10-15 03:14:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:14:07,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-15 03:14:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:07,777 INFO L225 Difference]: With dead ends: 2753 [2020-10-15 03:14:07,777 INFO L226 Difference]: Without dead ends: 1715 [2020-10-15 03:14:07,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:14:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2020-10-15 03:14:07,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1713. [2020-10-15 03:14:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2020-10-15 03:14:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2573 transitions. [2020-10-15 03:14:07,912 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2573 transitions. Word has length 44 [2020-10-15 03:14:07,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:07,912 INFO L479 AbstractCegarLoop]: Abstraction has 1713 states and 2573 transitions. [2020-10-15 03:14:07,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2573 transitions. [2020-10-15 03:14:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 03:14:07,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:07,914 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] [2020-10-15 03:14:07,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:14:07,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:07,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:07,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1271182972, now seen corresponding path program 1 times [2020-10-15 03:14:07,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:07,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228304265] [2020-10-15 03:14:07,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 03:14:08,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:14:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-15 03:14:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:08,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:14:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 03:14:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 03:14:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:08,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:08,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:08,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:08,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:14:08,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:08,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:08,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:08,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228304265] [2020-10-15 03:14:08,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:08,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:14:08,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410862572] [2020-10-15 03:14:08,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:14:08,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:08,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:14:08,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:14:08,318 INFO L87 Difference]: Start difference. First operand 1713 states and 2573 transitions. Second operand 4 states. [2020-10-15 03:14:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:08,848 INFO L93 Difference]: Finished difference Result 4725 states and 7075 transitions. [2020-10-15 03:14:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:14:08,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-15 03:14:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:08,865 INFO L225 Difference]: With dead ends: 4725 [2020-10-15 03:14:08,865 INFO L226 Difference]: Without dead ends: 3035 [2020-10-15 03:14:08,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:14:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2020-10-15 03:14:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 3033. [2020-10-15 03:14:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3033 states. [2020-10-15 03:14:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4478 transitions. [2020-10-15 03:14:09,201 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4478 transitions. Word has length 44 [2020-10-15 03:14:09,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:09,201 INFO L479 AbstractCegarLoop]: Abstraction has 3033 states and 4478 transitions. [2020-10-15 03:14:09,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:14:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4478 transitions. [2020-10-15 03:14:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 03:14:09,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:09,202 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] [2020-10-15 03:14:09,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:14:09,203 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:09,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1167189470, now seen corresponding path program 1 times [2020-10-15 03:14:09,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:09,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324348663] [2020-10-15 03:14:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:09,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 03:14:09,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:14:09,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-15 03:14:09,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:09,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:14:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 03:14:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 03:14:09,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:09,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:09,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:09,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:09,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:14:09,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:09,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:14:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:09,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324348663] [2020-10-15 03:14:09,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:09,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:14:09,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668946810] [2020-10-15 03:14:09,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:14:09,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:09,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:14:09,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:14:09,467 INFO L87 Difference]: Start difference. First operand 3033 states and 4478 transitions. Second operand 4 states. [2020-10-15 03:14:10,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:10,256 INFO L93 Difference]: Finished difference Result 8317 states and 12192 transitions. [2020-10-15 03:14:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:14:10,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-15 03:14:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:10,283 INFO L225 Difference]: With dead ends: 8317 [2020-10-15 03:14:10,283 INFO L226 Difference]: Without dead ends: 5307 [2020-10-15 03:14:10,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:14:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2020-10-15 03:14:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 5305. [2020-10-15 03:14:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5305 states. [2020-10-15 03:14:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 7644 transitions. [2020-10-15 03:14:10,690 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 7644 transitions. Word has length 45 [2020-10-15 03:14:10,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:10,690 INFO L479 AbstractCegarLoop]: Abstraction has 5305 states and 7644 transitions. [2020-10-15 03:14:10,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:14:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 7644 transitions. [2020-10-15 03:14:10,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 03:14:10,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:10,692 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] [2020-10-15 03:14:10,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:14:10,692 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:10,692 INFO L82 PathProgramCache]: Analyzing trace with hash 804903568, now seen corresponding path program 1 times [2020-10-15 03:14:10,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:10,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916428881] [2020-10-15 03:14:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:10,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 03:14:10,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:14:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-15 03:14:10,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:10,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:14:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:14:10,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:11,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:11,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:11,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:11,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:14:11,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:11,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:14:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:14:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:11,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916428881] [2020-10-15 03:14:11,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:11,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:14:11,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069286209] [2020-10-15 03:14:11,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:11,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:11,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:11,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:11,142 INFO L87 Difference]: Start difference. First operand 5305 states and 7644 transitions. Second operand 6 states. [2020-10-15 03:14:11,277 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-15 03:14:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:12,317 INFO L93 Difference]: Finished difference Result 15777 states and 22702 transitions. [2020-10-15 03:14:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:14:12,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-15 03:14:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:12,381 INFO L225 Difference]: With dead ends: 15777 [2020-10-15 03:14:12,381 INFO L226 Difference]: Without dead ends: 10495 [2020-10-15 03:14:12,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:14:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10495 states. [2020-10-15 03:14:13,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10495 to 10493. [2020-10-15 03:14:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10493 states. [2020-10-15 03:14:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10493 states to 10493 states and 14988 transitions. [2020-10-15 03:14:13,276 INFO L78 Accepts]: Start accepts. Automaton has 10493 states and 14988 transitions. Word has length 46 [2020-10-15 03:14:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:13,276 INFO L479 AbstractCegarLoop]: Abstraction has 10493 states and 14988 transitions. [2020-10-15 03:14:13,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10493 states and 14988 transitions. [2020-10-15 03:14:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 03:14:13,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:13,278 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] [2020-10-15 03:14:13,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:14:13,278 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:13,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:13,279 INFO L82 PathProgramCache]: Analyzing trace with hash 275613067, now seen corresponding path program 1 times [2020-10-15 03:14:13,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:13,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750328580] [2020-10-15 03:14:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:13,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:13,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:13,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 03:14:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 03:14:13,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:13,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:14:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 03:14:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:14:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:14:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:13,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:13,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750328580] [2020-10-15 03:14:13,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:13,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:14:13,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939222194] [2020-10-15 03:14:13,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:14:13,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:13,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:14:13,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:14:13,553 INFO L87 Difference]: Start difference. First operand 10493 states and 14988 transitions. Second operand 5 states. [2020-10-15 03:14:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:14,816 INFO L93 Difference]: Finished difference Result 16390 states and 23428 transitions. [2020-10-15 03:14:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:14:14,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-15 03:14:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:14,865 INFO L225 Difference]: With dead ends: 16390 [2020-10-15 03:14:14,866 INFO L226 Difference]: Without dead ends: 16388 [2020-10-15 03:14:14,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16388 states. [2020-10-15 03:14:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16388 to 10781. [2020-10-15 03:14:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10781 states. [2020-10-15 03:14:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10781 states to 10781 states and 15172 transitions. [2020-10-15 03:14:15,738 INFO L78 Accepts]: Start accepts. Automaton has 10781 states and 15172 transitions. Word has length 46 [2020-10-15 03:14:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:15,739 INFO L479 AbstractCegarLoop]: Abstraction has 10781 states and 15172 transitions. [2020-10-15 03:14:15,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:14:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10781 states and 15172 transitions. [2020-10-15 03:14:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 03:14:15,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:15,741 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] [2020-10-15 03:14:15,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:14:15,741 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash 967693490, now seen corresponding path program 1 times [2020-10-15 03:14:15,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:15,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251565221] [2020-10-15 03:14:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:15,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:16,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:16,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 03:14:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:14:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-15 03:14:16,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:16,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:14:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:14:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:14:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:16,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:16,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:16,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:16,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:14:16,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:16,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:14:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:16,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:14:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:16,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251565221] [2020-10-15 03:14:16,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:16,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:16,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598661540] [2020-10-15 03:14:16,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:14:16,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:16,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:14:16,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:14:16,479 INFO L87 Difference]: Start difference. First operand 10781 states and 15172 transitions. Second operand 7 states. [2020-10-15 03:14:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:18,224 INFO L93 Difference]: Finished difference Result 26425 states and 37217 transitions. [2020-10-15 03:14:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:14:18,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-15 03:14:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:18,267 INFO L225 Difference]: With dead ends: 26425 [2020-10-15 03:14:18,267 INFO L226 Difference]: Without dead ends: 17657 [2020-10-15 03:14:18,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:14:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17657 states. [2020-10-15 03:14:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17657 to 10788. [2020-10-15 03:14:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10788 states. [2020-10-15 03:14:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10788 states to 10788 states and 15181 transitions. [2020-10-15 03:14:19,872 INFO L78 Accepts]: Start accepts. Automaton has 10788 states and 15181 transitions. Word has length 48 [2020-10-15 03:14:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:19,872 INFO L479 AbstractCegarLoop]: Abstraction has 10788 states and 15181 transitions. [2020-10-15 03:14:19,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:14:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 10788 states and 15181 transitions. [2020-10-15 03:14:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:14:19,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:19,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:19,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:14:19,877 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:19,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:19,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1017107513, now seen corresponding path program 1 times [2020-10-15 03:14:19,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:19,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635571902] [2020-10-15 03:14:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:20,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:22,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:22,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:14:22,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:14:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2105 [2020-10-15 03:14:22,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:22,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:14:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:14:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:22,268 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:14:22,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:22,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:22,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:22,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:14:22,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:22,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:22,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:22,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635571902] [2020-10-15 03:14:22,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:14:22,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 03:14:22,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246255281] [2020-10-15 03:14:22,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:14:22,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:22,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:14:22,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:14:22,432 INFO L87 Difference]: Start difference. First operand 10788 states and 15181 transitions. Second operand 10 states. [2020-10-15 03:14:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:28,081 INFO L93 Difference]: Finished difference Result 52936 states and 74159 transitions. [2020-10-15 03:14:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:14:28,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-15 03:14:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:28,212 INFO L225 Difference]: With dead ends: 52936 [2020-10-15 03:14:28,212 INFO L226 Difference]: Without dead ends: 47200 [2020-10-15 03:14:28,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:14:28,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47200 states. [2020-10-15 03:14:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47200 to 20108. [2020-10-15 03:14:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20108 states. [2020-10-15 03:14:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20108 states to 20108 states and 28241 transitions. [2020-10-15 03:14:30,502 INFO L78 Accepts]: Start accepts. Automaton has 20108 states and 28241 transitions. Word has length 67 [2020-10-15 03:14:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:30,502 INFO L479 AbstractCegarLoop]: Abstraction has 20108 states and 28241 transitions. [2020-10-15 03:14:30,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:14:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 20108 states and 28241 transitions. [2020-10-15 03:14:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:14:30,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:30,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:30,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:14:30,507 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:30,512 INFO L82 PathProgramCache]: Analyzing trace with hash 295852200, now seen corresponding path program 1 times [2020-10-15 03:14:30,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:30,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197344099] [2020-10-15 03:14:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:30,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:30,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:30,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:33,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:33,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:14:33,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:14:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3300 [2020-10-15 03:14:33,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:33,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:14:33,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:33,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:14:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:34,218 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-15 03:14:34,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:34,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:34,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:14:34,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:34,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:14:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:34,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197344099] [2020-10-15 03:14:34,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:14:34,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 03:14:34,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911543725] [2020-10-15 03:14:34,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:14:34,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:34,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:14:34,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:14:34,282 INFO L87 Difference]: Start difference. First operand 20108 states and 28241 transitions. Second operand 9 states. [2020-10-15 03:14:34,512 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 03:14:42,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:42,566 INFO L93 Difference]: Finished difference Result 70981 states and 99178 transitions. [2020-10-15 03:14:42,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 03:14:42,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-15 03:14:42,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:42,655 INFO L225 Difference]: With dead ends: 70981 [2020-10-15 03:14:42,656 INFO L226 Difference]: Without dead ends: 50903 [2020-10-15 03:14:42,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2020-10-15 03:14:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50903 states. [2020-10-15 03:14:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50903 to 20108. [2020-10-15 03:14:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20108 states. [2020-10-15 03:14:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20108 states to 20108 states and 28057 transitions. [2020-10-15 03:14:45,204 INFO L78 Accepts]: Start accepts. Automaton has 20108 states and 28057 transitions. Word has length 67 [2020-10-15 03:14:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:45,204 INFO L479 AbstractCegarLoop]: Abstraction has 20108 states and 28057 transitions. [2020-10-15 03:14:45,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:14:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 20108 states and 28057 transitions. [2020-10-15 03:14:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:14:45,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:45,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:45,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:14:45,209 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:45,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash -594852700, now seen corresponding path program 1 times [2020-10-15 03:14:45,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:45,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521563981] [2020-10-15 03:14:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:50,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:50,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:14:50,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:14:50,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:14:50,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:50,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:14:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:14:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:50,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:50,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:50,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:50,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:14:50,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:50,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:50,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521563981] [2020-10-15 03:14:50,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:14:50,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:14:50,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48371510] [2020-10-15 03:14:50,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:50,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:50,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:50,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:50,425 INFO L87 Difference]: Start difference. First operand 20108 states and 28057 transitions. Second operand 6 states. [2020-10-15 03:14:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:53,899 INFO L93 Difference]: Finished difference Result 38928 states and 55213 transitions. [2020-10-15 03:14:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:14:53,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-15 03:14:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:53,958 INFO L225 Difference]: With dead ends: 38928 [2020-10-15 03:14:53,959 INFO L226 Difference]: Without dead ends: 29004 [2020-10-15 03:14:53,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:14:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29004 states. [2020-10-15 03:14:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29004 to 28718. [2020-10-15 03:14:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28718 states. [2020-10-15 03:14:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28718 states to 28718 states and 39879 transitions. [2020-10-15 03:14:57,418 INFO L78 Accepts]: Start accepts. Automaton has 28718 states and 39879 transitions. Word has length 68 [2020-10-15 03:14:57,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:57,419 INFO L479 AbstractCegarLoop]: Abstraction has 28718 states and 39879 transitions. [2020-10-15 03:14:57,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 28718 states and 39879 transitions. [2020-10-15 03:14:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:14:57,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:57,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:57,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:14:57,423 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:57,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:57,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2026982534, now seen corresponding path program 1 times [2020-10-15 03:14:57,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:57,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742885811] [2020-10-15 03:14:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:58,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:01,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:15:01,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:15:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3817 [2020-10-15 03:15:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:01,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:15:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:01,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:01,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:01,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:15:01,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:01,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:01,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742885811] [2020-10-15 03:15:01,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:15:01,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 03:15:01,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091017826] [2020-10-15 03:15:01,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:01,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:01,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:01,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:01,409 INFO L87 Difference]: Start difference. First operand 28718 states and 39879 transitions. Second operand 8 states. [2020-10-15 03:15:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:09,080 INFO L93 Difference]: Finished difference Result 82717 states and 114990 transitions. [2020-10-15 03:15:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:15:09,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-15 03:15:09,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:09,172 INFO L225 Difference]: With dead ends: 82717 [2020-10-15 03:15:09,173 INFO L226 Difference]: Without dead ends: 54029 [2020-10-15 03:15:09,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:15:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54029 states. [2020-10-15 03:15:12,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54029 to 28051. [2020-10-15 03:15:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28051 states. [2020-10-15 03:15:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28051 states to 28051 states and 38526 transitions. [2020-10-15 03:15:12,992 INFO L78 Accepts]: Start accepts. Automaton has 28051 states and 38526 transitions. Word has length 68 [2020-10-15 03:15:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:12,992 INFO L479 AbstractCegarLoop]: Abstraction has 28051 states and 38526 transitions. [2020-10-15 03:15:12,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 28051 states and 38526 transitions. [2020-10-15 03:15:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:15:12,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:12,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:12,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:15:12,995 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:12,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:12,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1546729449, now seen corresponding path program 1 times [2020-10-15 03:15:12,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:12,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857270628] [2020-10-15 03:15:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:13,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:13,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:15:13,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:15:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-15 03:15:13,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:13,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:15:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:15:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:13,773 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2020-10-15 03:15:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:13,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:13,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:13,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:15:13,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:13,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:13,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:13,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857270628] [2020-10-15 03:15:13,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:15:13,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 03:15:13,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276215962] [2020-10-15 03:15:13,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:15:13,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:13,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:15:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:15:13,960 INFO L87 Difference]: Start difference. First operand 28051 states and 38526 transitions. Second operand 10 states. [2020-10-15 03:15:14,110 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-15 03:15:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:35,431 INFO L93 Difference]: Finished difference Result 151427 states and 205700 transitions. [2020-10-15 03:15:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:15:35,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-15 03:15:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:35,635 INFO L225 Difference]: With dead ends: 151427 [2020-10-15 03:15:35,635 INFO L226 Difference]: Without dead ends: 135742 [2020-10-15 03:15:35,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-10-15 03:15:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135742 states. [2020-10-15 03:15:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135742 to 71082. [2020-10-15 03:15:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71082 states. [2020-10-15 03:15:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71082 states to 71082 states and 97971 transitions. [2020-10-15 03:15:48,433 INFO L78 Accepts]: Start accepts. Automaton has 71082 states and 97971 transitions. Word has length 68 [2020-10-15 03:15:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:48,434 INFO L479 AbstractCegarLoop]: Abstraction has 71082 states and 97971 transitions. [2020-10-15 03:15:48,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:15:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 71082 states and 97971 transitions. [2020-10-15 03:15:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:15:48,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:48,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:48,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:15:48,453 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:48,453 INFO L82 PathProgramCache]: Analyzing trace with hash -303914834, now seen corresponding path program 1 times [2020-10-15 03:15:48,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:48,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691079728] [2020-10-15 03:15:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:53,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:15:53,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:15:53,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:53,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:15:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:15:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:53,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:53,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:53,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:15:53,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:53,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:53,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691079728] [2020-10-15 03:15:53,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:15:53,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:15:53,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806372183] [2020-10-15 03:15:53,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:15:53,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:53,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:15:53,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:15:53,747 INFO L87 Difference]: Start difference. First operand 71082 states and 97971 transitions. Second operand 9 states. [2020-10-15 03:16:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:19,220 INFO L93 Difference]: Finished difference Result 205442 states and 279207 transitions. [2020-10-15 03:16:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:16:19,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-15 03:16:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:19,422 INFO L225 Difference]: With dead ends: 205442 [2020-10-15 03:16:19,422 INFO L226 Difference]: Without dead ends: 134390 [2020-10-15 03:16:19,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:16:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134390 states. [2020-10-15 03:16:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134390 to 65549. [2020-10-15 03:16:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65549 states. [2020-10-15 03:16:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65549 states to 65549 states and 87982 transitions. [2020-10-15 03:16:30,476 INFO L78 Accepts]: Start accepts. Automaton has 65549 states and 87982 transitions. Word has length 68 [2020-10-15 03:16:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:30,476 INFO L479 AbstractCegarLoop]: Abstraction has 65549 states and 87982 transitions. [2020-10-15 03:16:30,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 65549 states and 87982 transitions. [2020-10-15 03:16:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:16:30,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:30,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:30,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:16:30,480 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:30,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1835951092, now seen corresponding path program 1 times [2020-10-15 03:16:30,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:30,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487028910] [2020-10-15 03:16:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:35,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:35,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:16:35,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:16:35,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:16:35,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:35,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:16:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:35,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:35,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:16:35,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:35,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:35,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:35,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487028910] [2020-10-15 03:16:35,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:16:35,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 03:16:35,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240649030] [2020-10-15 03:16:35,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:35,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:35,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:35,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:35,745 INFO L87 Difference]: Start difference. First operand 65549 states and 87982 transitions. Second operand 9 states. [2020-10-15 03:16:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:53,177 INFO L93 Difference]: Finished difference Result 156314 states and 208508 transitions. [2020-10-15 03:16:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 03:16:53,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-15 03:16:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:53,342 INFO L225 Difference]: With dead ends: 156314 [2020-10-15 03:16:53,342 INFO L226 Difference]: Without dead ends: 90795 [2020-10-15 03:16:53,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:16:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90795 states. [2020-10-15 03:17:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90795 to 66381. [2020-10-15 03:17:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66381 states. [2020-10-15 03:17:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66381 states to 66381 states and 88300 transitions. [2020-10-15 03:17:05,990 INFO L78 Accepts]: Start accepts. Automaton has 66381 states and 88300 transitions. Word has length 69 [2020-10-15 03:17:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:05,991 INFO L479 AbstractCegarLoop]: Abstraction has 66381 states and 88300 transitions. [2020-10-15 03:17:05,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:17:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 66381 states and 88300 transitions. [2020-10-15 03:17:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:17:05,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:05,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:05,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:17:05,995 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:05,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:05,996 INFO L82 PathProgramCache]: Analyzing trace with hash 300553167, now seen corresponding path program 1 times [2020-10-15 03:17:05,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:05,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173453040] [2020-10-15 03:17:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:08,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:17:08,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:17:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2572 [2020-10-15 03:17:08,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:08,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:17:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:17:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:08,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:08,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:08,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:08,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:08,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:08,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:09,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173453040] [2020-10-15 03:17:09,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:17:09,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 03:17:09,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806115753] [2020-10-15 03:17:09,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:17:09,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:09,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:17:09,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:17:09,014 INFO L87 Difference]: Start difference. First operand 66381 states and 88300 transitions. Second operand 10 states. [2020-10-15 03:17:09,188 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 100