/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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:20:44,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:20:44,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:20:44,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:20:44,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:20:44,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:20:44,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:20:44,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:20:44,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:20:44,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:20:44,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:20:44,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:20:44,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:20:44,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:20:44,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:20:44,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:20:44,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:20:44,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:20:44,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:20:44,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:20:44,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:20:44,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:20:44,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:20:44,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:20:44,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:20:44,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:20:44,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:20:44,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:20:44,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:20:44,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:20:44,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:20:44,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:20:44,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:20:44,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:20:44,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:20:44,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:20:44,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:20:44,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:20:44,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:20:44,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:20:44,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:20:44,426 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 09:20:44,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:20:44,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:20:44,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:20:44,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:20:44,480 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:20:44,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:20:44,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:20:44,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:20:44,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:20:44,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:20:44,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:20:44,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:20:44,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:20:44,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:20:44,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:20:44,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:20:44,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:20:44,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:20:44,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:20:44,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:20:44,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:20:44,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:20:44,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:20:44,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:20:44,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:20:44,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:20:44,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:20:44,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:20:44,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:20:44,488 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 09:20:44,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:20:44,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:20:44,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:20:44,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:20:44,847 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:20:44,847 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:20:44,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/671a281e0/a8af940d4143421ab92d83293fc00f43/FLAG6c88113ba [2020-10-14 09:20:45,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:20:45,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:20:45,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/671a281e0/a8af940d4143421ab92d83293fc00f43/FLAG6c88113ba [2020-10-14 09:20:45,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/671a281e0/a8af940d4143421ab92d83293fc00f43 [2020-10-14 09:20:45,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:20:45,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:20:45,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:20:45,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:20:45,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:20:45,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:20:45" (1/1) ... [2020-10-14 09:20:45,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b1378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:45, skipping insertion in model container [2020-10-14 09:20:45,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:20:45" (1/1) ... [2020-10-14 09:20:45,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:20:45,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:20:46,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:20:46,313 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:20:46,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:20:46,478 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:20:46,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46 WrapperNode [2020-10-14 09:20:46,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:20:46,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:20:46,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:20:46,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:20:46,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (1/1) ... [2020-10-14 09:20:46,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (1/1) ... [2020-10-14 09:20:46,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (1/1) ... [2020-10-14 09:20:46,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (1/1) ... [2020-10-14 09:20:46,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (1/1) ... [2020-10-14 09:20:46,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (1/1) ... [2020-10-14 09:20:46,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (1/1) ... [2020-10-14 09:20:46,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:20:46,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:20:46,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:20:46,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:20:46,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (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 09:20:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:20:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:20:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:20:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:20:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:20:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:20:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:20:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:20:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:20:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:20:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:20:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:20:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:20:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:20:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:20:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:20:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:20:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:20:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 09:20:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:20:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:20:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:20:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:20:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:20:47,765 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:20:47,765 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:20:47,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:20:47 BoogieIcfgContainer [2020-10-14 09:20:47,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:20:47,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:20:47,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:20:47,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:20:47,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:20:45" (1/3) ... [2020-10-14 09:20:47,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd681ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:20:47, skipping insertion in model container [2020-10-14 09:20:47,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:46" (2/3) ... [2020-10-14 09:20:47,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd681ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:20:47, skipping insertion in model container [2020-10-14 09:20:47,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:20:47" (3/3) ... [2020-10-14 09:20:47,782 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:20:47,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:20:47,802 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:20:47,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:20:47,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:20:47,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:20:47,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:20:47,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:20:47,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:20:47,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:20:47,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:20:47,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:20:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states. [2020-10-14 09:20:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 09:20:47,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:47,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:47,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:47,895 INFO L82 PathProgramCache]: Analyzing trace with hash 575977303, now seen corresponding path program 1 times [2020-10-14 09:20:47,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:47,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490153814] [2020-10-14 09:20:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:53,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:53,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 09:20:53,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:20:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:20:53,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:53,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:20:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 09:20:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:20:53,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:20:53,736 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:20:53,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:53,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:53,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:20:53,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:53,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:53,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:53,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:53,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:53,801 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 09:20:53,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490153814] [2020-10-14 09:20:53,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:53,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:20:53,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072185234] [2020-10-14 09:20:53,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:20:53,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:53,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:20:53,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:20:53,828 INFO L87 Difference]: Start difference. First operand 263 states. Second operand 4 states. [2020-10-14 09:20:54,166 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:20:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:55,644 INFO L93 Difference]: Finished difference Result 528 states and 869 transitions. [2020-10-14 09:20:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:20:55,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-14 09:20:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:55,667 INFO L225 Difference]: With dead ends: 528 [2020-10-14 09:20:55,667 INFO L226 Difference]: Without dead ends: 399 [2020-10-14 09:20:55,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:20:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-14 09:20:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 397. [2020-10-14 09:20:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-14 09:20:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 595 transitions. [2020-10-14 09:20:55,760 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 595 transitions. Word has length 100 [2020-10-14 09:20:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:55,761 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 595 transitions. [2020-10-14 09:20:55,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:20:55,761 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 595 transitions. [2020-10-14 09:20:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 09:20:55,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:55,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:55,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:20:55,766 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:55,767 INFO L82 PathProgramCache]: Analyzing trace with hash 332738772, now seen corresponding path program 1 times [2020-10-14 09:20:55,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:55,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227011749] [2020-10-14 09:20:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:57,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:57,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 09:20:57,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:20:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1749 [2020-10-14 09:20:57,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:57,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:20:57,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 09:20:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:20:57,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 45 [2020-10-14 09:20:57,906 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:20:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:57,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:57,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:20:57,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:57,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:57,964 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 09:20:57,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227011749] [2020-10-14 09:20:57,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:57,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:20:57,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932201537] [2020-10-14 09:20:57,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:20:57,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:57,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:20:57,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:20:57,970 INFO L87 Difference]: Start difference. First operand 397 states and 595 transitions. Second operand 5 states. [2020-10-14 09:20:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:59,409 INFO L93 Difference]: Finished difference Result 610 states and 933 transitions. [2020-10-14 09:20:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:20:59,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 09:20:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:59,419 INFO L225 Difference]: With dead ends: 610 [2020-10-14 09:20:59,419 INFO L226 Difference]: Without dead ends: 608 [2020-10-14 09:20:59,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:20:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-14 09:20:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 399. [2020-10-14 09:20:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-14 09:20:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 597 transitions. [2020-10-14 09:20:59,483 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 597 transitions. Word has length 101 [2020-10-14 09:20:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:59,484 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 597 transitions. [2020-10-14 09:20:59,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:20:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 597 transitions. [2020-10-14 09:20:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 09:20:59,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:59,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:59,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:20:59,492 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:59,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2069199781, now seen corresponding path program 1 times [2020-10-14 09:20:59,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:59,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838005786] [2020-10-14 09:20:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:01,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:01,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 09:21:01,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:21:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-14 09:21:01,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:01,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:21:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:21:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 09:21:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:02,025 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:21:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:02,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:02,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:02,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:21:02,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:02,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:02,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:02,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:02,122 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 09:21:02,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838005786] [2020-10-14 09:21:02,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:02,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:21:02,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287503657] [2020-10-14 09:21:02,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:21:02,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:02,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:21:02,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:02,129 INFO L87 Difference]: Start difference. First operand 399 states and 597 transitions. Second operand 5 states. [2020-10-14 09:21:02,485 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:21:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:03,686 INFO L93 Difference]: Finished difference Result 850 states and 1314 transitions. [2020-10-14 09:21:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:21:03,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 09:21:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:03,696 INFO L225 Difference]: With dead ends: 850 [2020-10-14 09:21:03,696 INFO L226 Difference]: Without dead ends: 618 [2020-10-14 09:21:03,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:21:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-14 09:21:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2020-10-14 09:21:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-10-14 09:21:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 938 transitions. [2020-10-14 09:21:03,757 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 938 transitions. Word has length 102 [2020-10-14 09:21:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:03,759 INFO L479 AbstractCegarLoop]: Abstraction has 614 states and 938 transitions. [2020-10-14 09:21:03,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:21:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 938 transitions. [2020-10-14 09:21:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:21:03,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:03,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:03,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:21:03,768 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:03,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1280364959, now seen corresponding path program 1 times [2020-10-14 09:21:03,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:03,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499500944] [2020-10-14 09:21:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:08,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:08,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:21:08,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:21:08,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:08,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 09:21:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:21:08,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:09,178 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:21:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:09,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:09,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:09,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:09,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:21:09,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:09,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:09,239 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 09:21:09,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499500944] [2020-10-14 09:21:09,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:09,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:09,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635531874] [2020-10-14 09:21:09,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:09,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:09,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:09,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:09,244 INFO L87 Difference]: Start difference. First operand 614 states and 938 transitions. Second operand 4 states. [2020-10-14 09:21:09,525 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:21:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:10,844 INFO L93 Difference]: Finished difference Result 1622 states and 2534 transitions. [2020-10-14 09:21:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:10,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:21:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:10,853 INFO L225 Difference]: With dead ends: 1622 [2020-10-14 09:21:10,854 INFO L226 Difference]: Without dead ends: 1123 [2020-10-14 09:21:10,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:10,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-10-14 09:21:10,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1121. [2020-10-14 09:21:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-14 09:21:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1729 transitions. [2020-10-14 09:21:10,939 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1729 transitions. Word has length 103 [2020-10-14 09:21:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:10,939 INFO L479 AbstractCegarLoop]: Abstraction has 1121 states and 1729 transitions. [2020-10-14 09:21:10,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1729 transitions. [2020-10-14 09:21:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:21:10,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:10,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:10,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:21:10,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:10,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1972992287, now seen corresponding path program 1 times [2020-10-14 09:21:10,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:10,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742943564] [2020-10-14 09:21:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:11,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:11,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:15,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:15,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:21:15,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:21:15,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:15,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:21:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:21:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:16,235 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:21:16,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:21:16,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:16,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:16,277 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 09:21:16,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742943564] [2020-10-14 09:21:16,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:16,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:16,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987682716] [2020-10-14 09:21:16,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:16,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:16,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:16,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:16,280 INFO L87 Difference]: Start difference. First operand 1121 states and 1729 transitions. Second operand 4 states. [2020-10-14 09:21:16,525 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:21:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:17,646 INFO L93 Difference]: Finished difference Result 2873 states and 4496 transitions. [2020-10-14 09:21:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:17,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:21:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:17,660 INFO L225 Difference]: With dead ends: 2873 [2020-10-14 09:21:17,660 INFO L226 Difference]: Without dead ends: 2009 [2020-10-14 09:21:17,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-10-14 09:21:17,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2007. [2020-10-14 09:21:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2007 states. [2020-10-14 09:21:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 3104 transitions. [2020-10-14 09:21:17,767 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 3104 transitions. Word has length 103 [2020-10-14 09:21:17,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:17,767 INFO L479 AbstractCegarLoop]: Abstraction has 2007 states and 3104 transitions. [2020-10-14 09:21:17,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 3104 transitions. [2020-10-14 09:21:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:21:17,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:17,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:17,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:21:17,773 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:17,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash -669834420, now seen corresponding path program 1 times [2020-10-14 09:21:17,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:17,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990221507] [2020-10-14 09:21:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:17,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:17,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:18,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:22,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:22,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:21:22,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:22,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:21:22,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:22,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:22,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 09:21:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:21:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:23,080 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:21:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:23,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:23,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:23,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:23,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:21:23,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:23,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:23,142 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 09:21:23,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990221507] [2020-10-14 09:21:23,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:23,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:23,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745509975] [2020-10-14 09:21:23,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:23,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:23,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:23,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:23,145 INFO L87 Difference]: Start difference. First operand 2007 states and 3104 transitions. Second operand 4 states. [2020-10-14 09:21:23,445 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:21:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:24,872 INFO L93 Difference]: Finished difference Result 5275 states and 8232 transitions. [2020-10-14 09:21:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:24,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:21:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:24,894 INFO L225 Difference]: With dead ends: 5275 [2020-10-14 09:21:24,894 INFO L226 Difference]: Without dead ends: 3661 [2020-10-14 09:21:24,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2020-10-14 09:21:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 3659. [2020-10-14 09:21:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3659 states. [2020-10-14 09:21:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5658 transitions. [2020-10-14 09:21:25,140 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5658 transitions. Word has length 103 [2020-10-14 09:21:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:25,140 INFO L479 AbstractCegarLoop]: Abstraction has 3659 states and 5658 transitions. [2020-10-14 09:21:25,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5658 transitions. [2020-10-14 09:21:25,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:21:25,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:25,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:25,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:21:25,144 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:25,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1168205085, now seen corresponding path program 1 times [2020-10-14 09:21:25,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:25,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858879652] [2020-10-14 09:21:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:25,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:30,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:30,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:21:30,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:21:30,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:30,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 09:21:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:21:30,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:30,415 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:21:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:30,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:30,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:30,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:21:30,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:30,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:30,457 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 09:21:30,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858879652] [2020-10-14 09:21:30,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:30,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:30,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840476994] [2020-10-14 09:21:30,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:30,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:30,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:30,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:30,460 INFO L87 Difference]: Start difference. First operand 3659 states and 5658 transitions. Second operand 4 states. [2020-10-14 09:21:30,672 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:21:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:32,077 INFO L93 Difference]: Finished difference Result 9995 states and 15492 transitions. [2020-10-14 09:21:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:32,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:21:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:32,112 INFO L225 Difference]: With dead ends: 9995 [2020-10-14 09:21:32,113 INFO L226 Difference]: Without dead ends: 6817 [2020-10-14 09:21:32,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6817 states. [2020-10-14 09:21:32,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6817 to 6815. [2020-10-14 09:21:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6815 states. [2020-10-14 09:21:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6815 states to 6815 states and 10450 transitions. [2020-10-14 09:21:32,522 INFO L78 Accepts]: Start accepts. Automaton has 6815 states and 10450 transitions. Word has length 103 [2020-10-14 09:21:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:32,523 INFO L479 AbstractCegarLoop]: Abstraction has 6815 states and 10450 transitions. [2020-10-14 09:21:32,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 6815 states and 10450 transitions. [2020-10-14 09:21:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:21:32,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:32,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:32,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:21:32,529 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:32,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1909973665, now seen corresponding path program 1 times [2020-10-14 09:21:32,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:32,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295191403] [2020-10-14 09:21:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:37,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:37,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:21:37,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:37,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:21:37,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:37,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 09:21:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 09:21:37,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:37,784 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:21:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:37,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:37,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:37,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:37,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:21:37,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:37,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:37,821 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 09:21:37,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295191403] [2020-10-14 09:21:37,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:37,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:37,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121473769] [2020-10-14 09:21:37,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:37,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:37,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:37,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:37,824 INFO L87 Difference]: Start difference. First operand 6815 states and 10450 transitions. Second operand 4 states. [2020-10-14 09:21:38,037 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:21:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:39,379 INFO L93 Difference]: Finished difference Result 18927 states and 29024 transitions. [2020-10-14 09:21:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:39,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:21:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:39,447 INFO L225 Difference]: With dead ends: 18927 [2020-10-14 09:21:39,447 INFO L226 Difference]: Without dead ends: 12765 [2020-10-14 09:21:39,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12765 states. [2020-10-14 09:21:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12765 to 12763. [2020-10-14 09:21:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12763 states. [2020-10-14 09:21:40,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12763 states to 12763 states and 19342 transitions. [2020-10-14 09:21:40,109 INFO L78 Accepts]: Start accepts. Automaton has 12763 states and 19342 transitions. Word has length 103 [2020-10-14 09:21:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:40,110 INFO L479 AbstractCegarLoop]: Abstraction has 12763 states and 19342 transitions. [2020-10-14 09:21:40,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:40,110 INFO L276 IsEmpty]: Start isEmpty. Operand 12763 states and 19342 transitions. [2020-10-14 09:21:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:21:40,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:40,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:40,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:21:40,119 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:40,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:40,119 INFO L82 PathProgramCache]: Analyzing trace with hash -897988829, now seen corresponding path program 1 times [2020-10-14 09:21:40,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:40,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046422456] [2020-10-14 09:21:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:21:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:21:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:45,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 09:21:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 09:21:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:45,445 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:21:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:45,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:45,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:45,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:45,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:45,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:21:45,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:45,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:45,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:45,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:45,477 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 09:21:45,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046422456] [2020-10-14 09:21:45,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:45,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:45,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245644485] [2020-10-14 09:21:45,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:45,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:45,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:45,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:45,480 INFO L87 Difference]: Start difference. First operand 12763 states and 19342 transitions. Second operand 4 states. [2020-10-14 09:21:45,690 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:21:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:47,222 INFO L93 Difference]: Finished difference Result 35709 states and 54064 transitions. [2020-10-14 09:21:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:47,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:21:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:47,288 INFO L225 Difference]: With dead ends: 35709 [2020-10-14 09:21:47,288 INFO L226 Difference]: Without dead ends: 23803 [2020-10-14 09:21:47,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23803 states. [2020-10-14 09:21:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23803 to 23801. [2020-10-14 09:21:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23801 states. [2020-10-14 09:21:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23801 states to 23801 states and 35582 transitions. [2020-10-14 09:21:49,088 INFO L78 Accepts]: Start accepts. Automaton has 23801 states and 35582 transitions. Word has length 103 [2020-10-14 09:21:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:49,089 INFO L479 AbstractCegarLoop]: Abstraction has 23801 states and 35582 transitions. [2020-10-14 09:21:49,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 23801 states and 35582 transitions. [2020-10-14 09:21:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:21:49,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:49,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:49,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:21:49,105 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash 695828076, now seen corresponding path program 1 times [2020-10-14 09:21:49,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:49,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420424603] [2020-10-14 09:21:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:52,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:52,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:21:52,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3537 [2020-10-14 09:21:52,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:52,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:21:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:21:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 09:21:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:52,883 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:21:52,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:52,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:52,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:52,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:52,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:21:52,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:52,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:52,919 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 09:21:52,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420424603] [2020-10-14 09:21:52,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:52,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:21:52,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711521046] [2020-10-14 09:21:52,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:21:52,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:52,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:21:52,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:21:52,921 INFO L87 Difference]: Start difference. First operand 23801 states and 35582 transitions. Second operand 6 states. [2020-10-14 09:21:53,117 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-14 09:22:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:00,560 INFO L93 Difference]: Finished difference Result 190973 states and 286770 transitions. [2020-10-14 09:22:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:22:00,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-14 09:22:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:01,049 INFO L225 Difference]: With dead ends: 190973 [2020-10-14 09:22:01,049 INFO L226 Difference]: Without dead ends: 168773 [2020-10-14 09:22:01,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:22:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168773 states. [2020-10-14 09:22:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168773 to 87475. [2020-10-14 09:22:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87475 states. [2020-10-14 09:22:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87475 states to 87475 states and 130874 transitions. [2020-10-14 09:22:06,463 INFO L78 Accepts]: Start accepts. Automaton has 87475 states and 130874 transitions. Word has length 104 [2020-10-14 09:22:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:06,463 INFO L479 AbstractCegarLoop]: Abstraction has 87475 states and 130874 transitions. [2020-10-14 09:22:06,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:22:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 87475 states and 130874 transitions. [2020-10-14 09:22:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:22:06,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:06,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:06,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:22:06,511 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:06,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:06,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1104353667, now seen corresponding path program 1 times [2020-10-14 09:22:06,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:06,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830019462] [2020-10-14 09:22:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:06,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:09,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:22:09,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3139 [2020-10-14 09:22:09,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:09,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:22:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:22:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 09:22:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:09,900 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:09,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:09,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:09,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:09,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:22:09,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:09,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:09,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:09,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:09,926 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 09:22:09,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830019462] [2020-10-14 09:22:09,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:09,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:22:09,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881487643] [2020-10-14 09:22:09,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:22:09,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:09,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:22:09,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:09,928 INFO L87 Difference]: Start difference. First operand 87475 states and 130874 transitions. Second operand 6 states. [2020-10-14 09:22:10,136 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-14 09:22:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:37,545 INFO L93 Difference]: Finished difference Result 731807 states and 1096182 transitions. [2020-10-14 09:22:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:22:37,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-14 09:22:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:43,258 INFO L225 Difference]: With dead ends: 731807 [2020-10-14 09:22:43,259 INFO L226 Difference]: Without dead ends: 647997 [2020-10-14 09:22:43,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:22:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647997 states. [2020-10-14 09:23:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647997 to 330167. [2020-10-14 09:23:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330167 states. [2020-10-14 09:23:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330167 states to 330167 states and 493022 transitions. [2020-10-14 09:23:02,644 INFO L78 Accepts]: Start accepts. Automaton has 330167 states and 493022 transitions. Word has length 104 [2020-10-14 09:23:02,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:02,645 INFO L479 AbstractCegarLoop]: Abstraction has 330167 states and 493022 transitions. [2020-10-14 09:23:02,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:23:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 330167 states and 493022 transitions. [2020-10-14 09:23:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:23:02,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:02,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:23:02,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:23:02,712 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash -766855606, now seen corresponding path program 1 times [2020-10-14 09:23:02,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:02,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576531997] [2020-10-14 09:23:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:07,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:07,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:23:07,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:23:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:23:07,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:07,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:23:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:23:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 09:23:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:07,988 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:23:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:07,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:08,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:08,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:08,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:23:08,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:08,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:23:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:23:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:23:08,036 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 09:23:08,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576531997] [2020-10-14 09:23:08,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:08,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:23:08,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136503369] [2020-10-14 09:23:08,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:23:08,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:08,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:23:08,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:23:08,038 INFO L87 Difference]: Start difference. First operand 330167 states and 493022 transitions. Second operand 6 states. [2020-10-14 09:23:08,275 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:23:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:44,790 INFO L93 Difference]: Finished difference Result 970515 states and 1447588 transitions. [2020-10-14 09:23:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:23:44,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-14 09:23:44,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:46,043 INFO L225 Difference]: With dead ends: 970515 [2020-10-14 09:23:46,044 INFO L226 Difference]: Without dead ends: 640841 [2020-10-14 09:23:46,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:23:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640841 states.