/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:09:27,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:09:27,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:09:27,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:09:27,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:09:27,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:09:27,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:09:27,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:09:27,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:09:27,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:09:27,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:09:27,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:09:27,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:09:27,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:09:27,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:09:27,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:09:27,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:09:27,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:09:27,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:09:27,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:09:27,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:09:27,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:09:27,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:09:27,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:09:27,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:09:27,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:09:27,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:09:27,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:09:27,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:09:27,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:09:27,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:09:27,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:09:27,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:09:27,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:09:27,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:09:27,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:09:27,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:09:27,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:09:27,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:09:27,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:09:27,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:09:27,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:09:27,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:09:27,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:09:27,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:09:27,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:09:27,721 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:09:27,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:09:27,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:09:27,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:09:27,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:09:27,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:09:27,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:09:27,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:09:27,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:09:27,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:09:27,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:09:27,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:09:27,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:09:27,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:09:27,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:09:27,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:09:27,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:09:27,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:09:27,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:09:27,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:09:27,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:09:27,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:09:27,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:09:27,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:09:27,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:09:27,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:09:28,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:09:28,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:09:28,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:09:28,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:09:28,106 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:09:28,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:09:28,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63268f8e/4ce90b5b2a6a4962b22037e841787930/FLAGffe18ff40 [2020-10-14 09:09:28,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:09:28,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:09:29,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63268f8e/4ce90b5b2a6a4962b22037e841787930/FLAGffe18ff40 [2020-10-14 09:09:29,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63268f8e/4ce90b5b2a6a4962b22037e841787930 [2020-10-14 09:09:29,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:09:29,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:09:29,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:09:29,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:09:29,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:09:29,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:09:29" (1/1) ... [2020-10-14 09:09:29,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4603aae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:29, skipping insertion in model container [2020-10-14 09:09:29,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:09:29" (1/1) ... [2020-10-14 09:09:29,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:09:29,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:09:30,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:09:30,527 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:09:30,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:09:31,039 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:09:31,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31 WrapperNode [2020-10-14 09:09:31,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:09:31,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:09:31,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:09:31,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:09:31,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (1/1) ... [2020-10-14 09:09:31,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (1/1) ... [2020-10-14 09:09:31,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (1/1) ... [2020-10-14 09:09:31,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (1/1) ... [2020-10-14 09:09:31,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (1/1) ... [2020-10-14 09:09:31,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (1/1) ... [2020-10-14 09:09:31,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (1/1) ... [2020-10-14 09:09:31,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:09:31,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:09:31,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:09:31,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:09:31,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:09:31,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:09:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:09:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:09:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:09:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:09:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:09:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:09:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:09:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:09:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:09:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:09:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:09:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:09:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:09:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:09:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:09:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:09:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:09:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:09:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:09:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:09:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:09:35,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:09:35,517 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:09:35,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:09:35 BoogieIcfgContainer [2020-10-14 09:09:35,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:09:35,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:09:35,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:09:35,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:09:35,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:09:29" (1/3) ... [2020-10-14 09:09:35,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420f1324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:09:35, skipping insertion in model container [2020-10-14 09:09:35,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:09:31" (2/3) ... [2020-10-14 09:09:35,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420f1324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:09:35, skipping insertion in model container [2020-10-14 09:09:35,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:09:35" (3/3) ... [2020-10-14 09:09:35,536 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:09:35,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:09:35,555 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 09:09:35,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 09:09:35,595 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:09:35,595 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:09:35,595 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:09:35,595 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:09:35,595 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:09:35,595 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:09:35,596 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:09:35,596 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:09:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states. [2020-10-14 09:09:35,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:09:35,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:35,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:35,657 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:35,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:35,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1537336237, now seen corresponding path program 1 times [2020-10-14 09:09:35,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:35,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140710047] [2020-10-14 09:09:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:40,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:41,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:41,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:09:41,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:09:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:09:41,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:41,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:09:41,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:09:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 09:09:41,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:09:43,587 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:09:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:43,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:43,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:43,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:43,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 09:09:43,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:43,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:09:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:43,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140710047] [2020-10-14 09:09:43,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:43,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:09:43,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213905810] [2020-10-14 09:09:43,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:09:43,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:43,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:09:43,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:09:43,730 INFO L87 Difference]: Start difference. First operand 1107 states. Second operand 6 states. [2020-10-14 09:09:45,725 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-14 09:10:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:00,736 INFO L93 Difference]: Finished difference Result 2854 states and 5078 transitions. [2020-10-14 09:10:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:10:00,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:10:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:00,773 INFO L225 Difference]: With dead ends: 2854 [2020-10-14 09:10:00,775 INFO L226 Difference]: Without dead ends: 2042 [2020-10-14 09:10:00,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:10:00,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2020-10-14 09:10:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1586. [2020-10-14 09:10:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-10-14 09:10:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2155 transitions. [2020-10-14 09:10:00,930 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2155 transitions. Word has length 67 [2020-10-14 09:10:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:00,931 INFO L479 AbstractCegarLoop]: Abstraction has 1586 states and 2155 transitions. [2020-10-14 09:10:00,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:10:00,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2155 transitions. [2020-10-14 09:10:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:10:00,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:00,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:00,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:10:00,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:00,938 INFO L82 PathProgramCache]: Analyzing trace with hash 522357214, now seen corresponding path program 1 times [2020-10-14 09:10:00,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:00,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952038849] [2020-10-14 09:10:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:06,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:10:06,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:10:06,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 09:10:06,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:06,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 09:10:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:10:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:10:08,079 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:10:08,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:08,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:08,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:08,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:08,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 09:10:08,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:08,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:10:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:08,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952038849] [2020-10-14 09:10:08,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:08,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:08,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263757396] [2020-10-14 09:10:08,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:08,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:08,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:08,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:08,171 INFO L87 Difference]: Start difference. First operand 1586 states and 2155 transitions. Second operand 4 states. [2020-10-14 09:10:10,081 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-14 09:10:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:19,052 INFO L93 Difference]: Finished difference Result 2749 states and 3910 transitions. [2020-10-14 09:10:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:10:19,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:10:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:19,065 INFO L225 Difference]: With dead ends: 2749 [2020-10-14 09:10:19,065 INFO L226 Difference]: Without dead ends: 2103 [2020-10-14 09:10:19,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:10:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2020-10-14 09:10:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2095. [2020-10-14 09:10:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2095 states. [2020-10-14 09:10:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2907 transitions. [2020-10-14 09:10:19,145 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2907 transitions. Word has length 67 [2020-10-14 09:10:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:19,146 INFO L479 AbstractCegarLoop]: Abstraction has 2095 states and 2907 transitions. [2020-10-14 09:10:19,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2907 transitions. [2020-10-14 09:10:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:10:19,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:19,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:19,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:10:19,152 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:19,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2004494165, now seen corresponding path program 1 times [2020-10-14 09:10:19,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:19,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32256426] [2020-10-14 09:10:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:19,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:20,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:21,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:21,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:24,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:24,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:10:24,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:10:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 09:10:24,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:24,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:10:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:10:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:10:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:10:26,174 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:10:26,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:26,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:26,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:26,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 09:10:26,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:26,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:10:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:26,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32256426] [2020-10-14 09:10:26,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:26,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:10:26,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511072339] [2020-10-14 09:10:26,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:10:26,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:26,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:10:26,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:10:26,251 INFO L87 Difference]: Start difference. First operand 2095 states and 2907 transitions. Second operand 6 states. [2020-10-14 09:10:28,145 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-14 09:10:38,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:38,500 INFO L93 Difference]: Finished difference Result 3179 states and 4544 transitions. [2020-10-14 09:10:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:10:38,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:10:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:38,516 INFO L225 Difference]: With dead ends: 3179 [2020-10-14 09:10:38,516 INFO L226 Difference]: Without dead ends: 2832 [2020-10-14 09:10:38,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:10:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2020-10-14 09:10:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2048. [2020-10-14 09:10:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2020-10-14 09:10:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2830 transitions. [2020-10-14 09:10:38,593 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2830 transitions. Word has length 67 [2020-10-14 09:10:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:38,594 INFO L479 AbstractCegarLoop]: Abstraction has 2048 states and 2830 transitions. [2020-10-14 09:10:38,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:10:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2830 transitions. [2020-10-14 09:10:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:10:38,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:38,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:38,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:10:38,599 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:38,600 INFO L82 PathProgramCache]: Analyzing trace with hash 193631573, now seen corresponding path program 1 times [2020-10-14 09:10:38,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:38,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495862892] [2020-10-14 09:10:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:43,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:43,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:10:43,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:10:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:10:43,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:43,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:10:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:10:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:10:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:46,041 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:10:46,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:46,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:46,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:46,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:10:46,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:46,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:46,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:10:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:46,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495862892] [2020-10-14 09:10:46,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:46,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:10:46,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705265414] [2020-10-14 09:10:46,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:10:46,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:46,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:10:46,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:10:46,124 INFO L87 Difference]: Start difference. First operand 2048 states and 2830 transitions. Second operand 6 states. [2020-10-14 09:10:48,012 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-14 09:10:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:57,638 INFO L93 Difference]: Finished difference Result 9011 states and 13242 transitions. [2020-10-14 09:10:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:10:57,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:10:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:57,669 INFO L225 Difference]: With dead ends: 9011 [2020-10-14 09:10:57,669 INFO L226 Difference]: Without dead ends: 7270 [2020-10-14 09:10:57,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:10:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7270 states. [2020-10-14 09:10:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7270 to 4644. [2020-10-14 09:10:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4644 states. [2020-10-14 09:10:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4644 states to 4644 states and 6719 transitions. [2020-10-14 09:10:57,879 INFO L78 Accepts]: Start accepts. Automaton has 4644 states and 6719 transitions. Word has length 67 [2020-10-14 09:10:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:57,879 INFO L479 AbstractCegarLoop]: Abstraction has 4644 states and 6719 transitions. [2020-10-14 09:10:57,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:10:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4644 states and 6719 transitions. [2020-10-14 09:10:57,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:10:57,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:57,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:57,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:10:57,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:57,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:57,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1878593112, now seen corresponding path program 1 times [2020-10-14 09:10:57,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:57,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561512339] [2020-10-14 09:10:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:02,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:11:02,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:11:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:11:02,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:02,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:11:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:11:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:11:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:11:05,262 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:11:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:05,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:05,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:05,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 09:11:05,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:05,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:11:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:11:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:05,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561512339] [2020-10-14 09:11:05,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:05,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:11:05,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799565171] [2020-10-14 09:11:05,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:11:05,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:05,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:11:05,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:11:05,375 INFO L87 Difference]: Start difference. First operand 4644 states and 6719 transitions. Second operand 6 states. [2020-10-14 09:11:07,413 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 603 [2020-10-14 09:11:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:14,525 INFO L93 Difference]: Finished difference Result 11190 states and 16390 transitions. [2020-10-14 09:11:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:11:14,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:11:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:14,558 INFO L225 Difference]: With dead ends: 11190 [2020-10-14 09:11:14,559 INFO L226 Difference]: Without dead ends: 7145 [2020-10-14 09:11:14,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:11:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7145 states. [2020-10-14 09:11:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7145 to 7137. [2020-10-14 09:11:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7137 states. [2020-10-14 09:11:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 10318 transitions. [2020-10-14 09:11:14,910 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 10318 transitions. Word has length 67 [2020-10-14 09:11:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:14,911 INFO L479 AbstractCegarLoop]: Abstraction has 7137 states and 10318 transitions. [2020-10-14 09:11:14,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:11:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 10318 transitions. [2020-10-14 09:11:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:11:14,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:14,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:14,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:11:14,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:14,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:14,919 INFO L82 PathProgramCache]: Analyzing trace with hash 385819749, now seen corresponding path program 1 times [2020-10-14 09:11:14,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:14,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507866893] [2020-10-14 09:11:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:18,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:19,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:19,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:11:19,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:11:19,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:11:19,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:19,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:19,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:11:19,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:11:19,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 09:11:19,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:21,934 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:11:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:21,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:21,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:21,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:21,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 09:11:21,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:21,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:11:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:22,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507866893] [2020-10-14 09:11:22,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:22,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:11:22,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404960128] [2020-10-14 09:11:22,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:11:22,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:22,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:11:22,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:11:22,016 INFO L87 Difference]: Start difference. First operand 7137 states and 10318 transitions. Second operand 6 states. [2020-10-14 09:11:24,067 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 601 [2020-10-14 09:11:29,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:29,927 INFO L93 Difference]: Finished difference Result 16423 states and 23980 transitions. [2020-10-14 09:11:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:11:29,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 09:11:29,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:29,966 INFO L225 Difference]: With dead ends: 16423 [2020-10-14 09:11:29,967 INFO L226 Difference]: Without dead ends: 9714 [2020-10-14 09:11:29,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:11:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2020-10-14 09:11:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 9674. [2020-10-14 09:11:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9674 states. [2020-10-14 09:11:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9674 states to 9674 states and 14052 transitions. [2020-10-14 09:11:30,419 INFO L78 Accepts]: Start accepts. Automaton has 9674 states and 14052 transitions. Word has length 67 [2020-10-14 09:11:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:30,421 INFO L479 AbstractCegarLoop]: Abstraction has 9674 states and 14052 transitions. [2020-10-14 09:11:30,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:11:30,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9674 states and 14052 transitions. [2020-10-14 09:11:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:11:30,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:30,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:30,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:11:30,430 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:30,430 INFO L82 PathProgramCache]: Analyzing trace with hash 383917861, now seen corresponding path program 1 times [2020-10-14 09:11:30,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:30,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424528300] [2020-10-14 09:11:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:32,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:33,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:33,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:35,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:35,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:35,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:11:35,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:11:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:11:35,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:35,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 09:11:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:11:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:37,638 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:11:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:37,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:37,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:11:37,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:37,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:37,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424528300] [2020-10-14 09:11:37,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:37,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:37,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22023206] [2020-10-14 09:11:37,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:37,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:37,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:37,701 INFO L87 Difference]: Start difference. First operand 9674 states and 14052 transitions. Second operand 4 states. [2020-10-14 09:11:39,876 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-14 09:11:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:46,011 INFO L93 Difference]: Finished difference Result 25344 states and 37142 transitions. [2020-10-14 09:11:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:11:46,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:11:46,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:46,055 INFO L225 Difference]: With dead ends: 25344 [2020-10-14 09:11:46,056 INFO L226 Difference]: Without dead ends: 17124 [2020-10-14 09:11:46,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:11:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17124 states. [2020-10-14 09:11:46,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17124 to 17068. [2020-10-14 09:11:46,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17068 states. [2020-10-14 09:11:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17068 states to 17068 states and 24706 transitions. [2020-10-14 09:11:46,703 INFO L78 Accepts]: Start accepts. Automaton has 17068 states and 24706 transitions. Word has length 68 [2020-10-14 09:11:46,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:46,703 INFO L479 AbstractCegarLoop]: Abstraction has 17068 states and 24706 transitions. [2020-10-14 09:11:46,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 17068 states and 24706 transitions. [2020-10-14 09:11:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:11:46,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:46,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:46,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:11:46,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:46,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1702703223, now seen corresponding path program 1 times [2020-10-14 09:11:46,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:46,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662152975] [2020-10-14 09:11:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:47,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:50,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:50,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:52,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:11:52,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:11:52,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:11:52,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:52,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:11:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:11:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:54,485 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:11:54,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:54,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:54,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:54,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:11:54,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:54,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:54,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662152975] [2020-10-14 09:11:54,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:54,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:54,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223891957] [2020-10-14 09:11:54,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:54,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:54,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:54,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:54,530 INFO L87 Difference]: Start difference. First operand 17068 states and 24706 transitions. Second operand 4 states. [2020-10-14 09:11:56,546 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-14 09:12:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:03,511 INFO L93 Difference]: Finished difference Result 44242 states and 64946 transitions. [2020-10-14 09:12:03,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:12:03,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:12:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:03,586 INFO L225 Difference]: With dead ends: 44242 [2020-10-14 09:12:03,587 INFO L226 Difference]: Without dead ends: 30178 [2020-10-14 09:12:03,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:12:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30178 states. [2020-10-14 09:12:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30178 to 30074. [2020-10-14 09:12:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30074 states. [2020-10-14 09:12:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30074 states to 30074 states and 43448 transitions. [2020-10-14 09:12:05,132 INFO L78 Accepts]: Start accepts. Automaton has 30074 states and 43448 transitions. Word has length 69 [2020-10-14 09:12:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:05,133 INFO L479 AbstractCegarLoop]: Abstraction has 30074 states and 43448 transitions. [2020-10-14 09:12:05,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:12:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 30074 states and 43448 transitions. [2020-10-14 09:12:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:12:05,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:05,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:12:05,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:12:05,148 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:05,148 INFO L82 PathProgramCache]: Analyzing trace with hash 234493500, now seen corresponding path program 1 times [2020-10-14 09:12:05,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:05,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570729689] [2020-10-14 09:12:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:05,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:05,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:07,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:10,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:10,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:12:10,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:12:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:12:10,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:10,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:12:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:12:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 09:12:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:12,339 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:12:12,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:12,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:12,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:12,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:12:12,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:12,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:12,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:12,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570729689] [2020-10-14 09:12:12,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:12,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:12:12,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632832476] [2020-10-14 09:12:12,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:12:12,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:12,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:12:12,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:12:12,390 INFO L87 Difference]: Start difference. First operand 30074 states and 43448 transitions. Second operand 7 states. [2020-10-14 09:12:14,453 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 605 [2020-10-14 09:12:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:26,138 INFO L93 Difference]: Finished difference Result 95585 states and 140585 transitions. [2020-10-14 09:12:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:12:26,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-14 09:12:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:26,320 INFO L225 Difference]: With dead ends: 95585 [2020-10-14 09:12:26,320 INFO L226 Difference]: Without dead ends: 70800 [2020-10-14 09:12:26,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 09:12:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70800 states. [2020-10-14 09:12:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70800 to 28718. [2020-10-14 09:12:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28718 states. [2020-10-14 09:12:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28718 states to 28718 states and 41687 transitions. [2020-10-14 09:12:28,067 INFO L78 Accepts]: Start accepts. Automaton has 28718 states and 41687 transitions. Word has length 69 [2020-10-14 09:12:28,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:28,067 INFO L479 AbstractCegarLoop]: Abstraction has 28718 states and 41687 transitions. [2020-10-14 09:12:28,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:12:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 28718 states and 41687 transitions. [2020-10-14 09:12:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:12:28,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:28,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:12:28,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:12:28,079 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:28,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:28,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1392488013, now seen corresponding path program 1 times [2020-10-14 09:12:28,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:28,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714384141] [2020-10-14 09:12:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:28,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:28,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:29,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:33,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:33,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:12:33,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:12:33,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:12:33,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:33,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:12:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:12:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:12:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:35,311 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:12:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:35,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:35,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:35,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:12:35,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:35,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:12:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:12:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:35,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714384141] [2020-10-14 09:12:35,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:35,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:12:35,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375129636] [2020-10-14 09:12:35,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:12:35,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:35,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:12:35,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:12:35,366 INFO L87 Difference]: Start difference. First operand 28718 states and 41687 transitions. Second operand 4 states. [2020-10-14 09:12:37,408 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-14 09:12:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:12:46,574 INFO L93 Difference]: Finished difference Result 77082 states and 112751 transitions. [2020-10-14 09:12:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:12:46,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:12:46,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:12:46,648 INFO L225 Difference]: With dead ends: 77082 [2020-10-14 09:12:46,648 INFO L226 Difference]: Without dead ends: 51194 [2020-10-14 09:12:46,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:12:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51194 states. [2020-10-14 09:12:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51194 to 50994. [2020-10-14 09:12:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50994 states. [2020-10-14 09:12:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50994 states to 50994 states and 73548 transitions. [2020-10-14 09:12:49,053 INFO L78 Accepts]: Start accepts. Automaton has 50994 states and 73548 transitions. Word has length 69 [2020-10-14 09:12:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:49,054 INFO L479 AbstractCegarLoop]: Abstraction has 50994 states and 73548 transitions. [2020-10-14 09:12:49,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:12:49,054 INFO L276 IsEmpty]: Start isEmpty. Operand 50994 states and 73548 transitions. [2020-10-14 09:12:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:12:49,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:49,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:12:49,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:12:49,074 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:49,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:49,074 INFO L82 PathProgramCache]: Analyzing trace with hash 635359451, now seen corresponding path program 1 times [2020-10-14 09:12:49,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:49,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971106016] [2020-10-14 09:12:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:52,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:54,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:54,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:12:54,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:12:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:12:54,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:54,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:12:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:12:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:12:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:56,061 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-14 09:12:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:12:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:56,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:12:56,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:12:56,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:12:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 09:12:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:12:56,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:12:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:12:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:12:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:12:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:12:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:12:56,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971106016] [2020-10-14 09:12:56,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:12:56,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:12:56,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358480316] [2020-10-14 09:12:56,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:12:56,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:12:56,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:12:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:12:56,139 INFO L87 Difference]: Start difference. First operand 50994 states and 73548 transitions. Second operand 6 states. [2020-10-14 09:12:58,077 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 603 [2020-10-14 09:13:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:13:04,433 INFO L93 Difference]: Finished difference Result 77466 states and 112750 transitions. [2020-10-14 09:13:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:13:04,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-14 09:13:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:13:04,486 INFO L225 Difference]: With dead ends: 77466 [2020-10-14 09:13:04,486 INFO L226 Difference]: Without dead ends: 37108 [2020-10-14 09:13:04,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:13:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37108 states. [2020-10-14 09:13:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37108 to 37008. [2020-10-14 09:13:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37008 states. [2020-10-14 09:13:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37008 states to 37008 states and 53493 transitions. [2020-10-14 09:13:06,491 INFO L78 Accepts]: Start accepts. Automaton has 37008 states and 53493 transitions. Word has length 70 [2020-10-14 09:13:06,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:13:06,491 INFO L479 AbstractCegarLoop]: Abstraction has 37008 states and 53493 transitions. [2020-10-14 09:13:06,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:13:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 37008 states and 53493 transitions. [2020-10-14 09:13:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:13:06,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:13:06,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:13:06,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:13:06,499 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:13:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:13:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2002623372, now seen corresponding path program 1 times [2020-10-14 09:13:06,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:13:06,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978266301] [2020-10-14 09:13:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:13:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:13:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:08,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:13:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking...