/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/psyco/psyco_abp_1-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:22:47,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:22:47,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:22:47,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:22:47,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:22:47,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:22:47,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:22:47,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:22:47,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:22:47,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:22:47,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:22:47,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:22:47,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:22:47,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:22:47,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:22:47,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:22:47,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:22:47,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:22:47,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:22:47,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:22:47,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:22:47,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:22:47,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:22:47,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:22:47,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:22:47,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:22:47,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:22:47,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:22:47,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:22:47,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:22:47,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:22:47,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:22:47,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:22:47,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:22:47,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:22:47,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:22:47,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:22:47,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:22:47,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:22:47,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:22:47,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:22:47,616 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 07:22:47,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:22:47,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:22:47,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:22:47,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:22:47,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:22:47,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:22:47,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:22:47,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:22:47,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:22:47,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:22:47,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:22:47,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:22:47,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:22:47,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:22:47,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:22:47,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:22:47,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:22:47,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:22:47,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:22:47,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:22:47,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:22:47,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:22:47,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:22:47,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:22:47,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:22:47,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:22:47,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:22:47,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:22:47,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:22:47,644 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 07:22:47,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:22:47,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:22:47,969 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:22:47,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:22:47,971 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:22:47,972 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2020-10-14 07:22:48,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72bfab03d/e93bd91b42db44609fa99a1a450caece/FLAG64fef3424 [2020-10-14 07:22:48,504 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:22:48,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2020-10-14 07:22:48,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72bfab03d/e93bd91b42db44609fa99a1a450caece/FLAG64fef3424 [2020-10-14 07:22:48,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72bfab03d/e93bd91b42db44609fa99a1a450caece [2020-10-14 07:22:48,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:22:48,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:22:48,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:22:48,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:22:48,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:22:48,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:22:48" (1/1) ... [2020-10-14 07:22:48,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbb69e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:48, skipping insertion in model container [2020-10-14 07:22:48,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:22:48" (1/1) ... [2020-10-14 07:22:48,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:22:48,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:22:49,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:22:49,220 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:22:49,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:22:49,394 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:22:49,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49 WrapperNode [2020-10-14 07:22:49,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:22:49,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:22:49,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:22:49,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:22:49,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (1/1) ... [2020-10-14 07:22:49,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (1/1) ... [2020-10-14 07:22:49,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (1/1) ... [2020-10-14 07:22:49,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (1/1) ... [2020-10-14 07:22:49,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (1/1) ... [2020-10-14 07:22:49,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (1/1) ... [2020-10-14 07:22:49,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (1/1) ... [2020-10-14 07:22:49,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:22:49,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:22:49,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:22:49,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:22:49,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (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 07:22:49,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:22:49,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:22:49,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:22:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:22:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:22:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:22:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:22:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:22:50,483 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:22:50,483 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 07:22:50,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:22:50 BoogieIcfgContainer [2020-10-14 07:22:50,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:22:50,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:22:50,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:22:50,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:22:50,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:22:48" (1/3) ... [2020-10-14 07:22:50,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5c8ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:22:50, skipping insertion in model container [2020-10-14 07:22:50,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:49" (2/3) ... [2020-10-14 07:22:50,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5c8ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:22:50, skipping insertion in model container [2020-10-14 07:22:50,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:22:50" (3/3) ... [2020-10-14 07:22:50,500 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2020-10-14 07:22:50,513 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:22:50,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:22:50,537 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:22:50,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:22:50,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:22:50,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:22:50,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:22:50,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:22:50,563 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:22:50,563 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:22:50,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:22:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-10-14 07:22:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 07:22:50,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:50,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:50,590 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:50,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:50,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1483071650, now seen corresponding path program 1 times [2020-10-14 07:22:50,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:50,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142908347] [2020-10-14 07:22:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:50,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:50,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:50,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:22:50,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 07:22:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:50,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:22:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:50,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:22:50,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:50,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:50,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:50,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:50,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:22:50,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:50,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:22:50,995 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 07:22:50,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142908347] [2020-10-14 07:22:50,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:50,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 07:22:51,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129085013] [2020-10-14 07:22:51,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:22:51,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:51,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:22:51,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:22:51,044 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 3 states. [2020-10-14 07:22:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:51,107 INFO L93 Difference]: Finished difference Result 222 states and 422 transitions. [2020-10-14 07:22:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:22:51,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-14 07:22:51,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:51,121 INFO L225 Difference]: With dead ends: 222 [2020-10-14 07:22:51,122 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 07:22:51,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:22:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 07:22:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-14 07:22:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 07:22:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 169 transitions. [2020-10-14 07:22:51,171 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 169 transitions. Word has length 13 [2020-10-14 07:22:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:51,172 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 169 transitions. [2020-10-14 07:22:51,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:22:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 169 transitions. [2020-10-14 07:22:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 07:22:51,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:51,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:51,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:22:51,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:51,174 INFO L82 PathProgramCache]: Analyzing trace with hash -736931587, now seen corresponding path program 1 times [2020-10-14 07:22:51,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:51,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137306701] [2020-10-14 07:22:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:51,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:51,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:51,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:22:51,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:22:51,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 07:22:51,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:51,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:51,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:22:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:22:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:22:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:51,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:51,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:51,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:51,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:51,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:22:51,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:51,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:51,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:51,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:51,470 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 07:22:51,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137306701] [2020-10-14 07:22:51,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:51,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:22:51,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766013860] [2020-10-14 07:22:51,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:22:51,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:51,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:22:51,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:22:51,474 INFO L87 Difference]: Start difference. First operand 104 states and 169 transitions. Second operand 4 states. [2020-10-14 07:22:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:51,940 INFO L93 Difference]: Finished difference Result 210 states and 346 transitions. [2020-10-14 07:22:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:22:51,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 07:22:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:51,943 INFO L225 Difference]: With dead ends: 210 [2020-10-14 07:22:51,943 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 07:22:51,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 07:22:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-10-14 07:22:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 07:22:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 178 transitions. [2020-10-14 07:22:51,959 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 178 transitions. Word has length 14 [2020-10-14 07:22:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:51,959 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 178 transitions. [2020-10-14 07:22:51,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:22:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 178 transitions. [2020-10-14 07:22:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 07:22:51,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:51,961 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:51,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:22:51,961 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:51,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1504395429, now seen corresponding path program 1 times [2020-10-14 07:22:51,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:51,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236671203] [2020-10-14 07:22:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:52,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:52,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:22:52,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 07:22:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:52,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:22:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:22:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:22:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:52,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:52,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:52,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:22:52,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:52,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:52,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:22:52,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236671203] [2020-10-14 07:22:52,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:52,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:22:52,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451554628] [2020-10-14 07:22:52,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:22:52,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:52,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:22:52,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:22:52,337 INFO L87 Difference]: Start difference. First operand 112 states and 178 transitions. Second operand 4 states. [2020-10-14 07:22:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:52,846 INFO L93 Difference]: Finished difference Result 220 states and 351 transitions. [2020-10-14 07:22:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:22:52,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 07:22:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:52,851 INFO L225 Difference]: With dead ends: 220 [2020-10-14 07:22:52,851 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 07:22:52,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 07:22:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2020-10-14 07:22:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 07:22:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2020-10-14 07:22:52,879 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 19 [2020-10-14 07:22:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:52,879 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2020-10-14 07:22:52,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:22:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2020-10-14 07:22:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 07:22:52,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:52,881 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:52,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:22:52,881 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2142865338, now seen corresponding path program 1 times [2020-10-14 07:22:52,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:52,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148080183] [2020-10-14 07:22:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:22:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:22:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:22:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:52,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:22:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:22:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:22:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:53,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:53,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:53,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:22:53,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:53,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:53,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:22:53,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148080183] [2020-10-14 07:22:53,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:53,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:22:53,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010583441] [2020-10-14 07:22:53,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:22:53,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:22:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:22:53,007 INFO L87 Difference]: Start difference. First operand 181 states and 291 transitions. Second operand 4 states. [2020-10-14 07:22:53,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:53,315 INFO L93 Difference]: Finished difference Result 318 states and 512 transitions. [2020-10-14 07:22:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:22:53,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 07:22:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:53,317 INFO L225 Difference]: With dead ends: 318 [2020-10-14 07:22:53,318 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 07:22:53,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:53,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 07:22:53,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2020-10-14 07:22:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 07:22:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 218 transitions. [2020-10-14 07:22:53,347 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 218 transitions. Word has length 20 [2020-10-14 07:22:53,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:53,349 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 218 transitions. [2020-10-14 07:22:53,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:22:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 218 transitions. [2020-10-14 07:22:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 07:22:53,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:53,351 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:53,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:22:53,351 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:53,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:53,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2011475352, now seen corresponding path program 1 times [2020-10-14 07:22:53,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:53,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080991477] [2020-10-14 07:22:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:53,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:53,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:22:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 07:22:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:53,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:22:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:22:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:22:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:53,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:53,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:53,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:53,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:53,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:22:53,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:53,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 07:22:53,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080991477] [2020-10-14 07:22:53,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:53,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:22:53,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027275213] [2020-10-14 07:22:53,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:22:53,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:53,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:22:53,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:22:53,529 INFO L87 Difference]: Start difference. First operand 141 states and 218 transitions. Second operand 4 states. [2020-10-14 07:22:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:53,652 INFO L93 Difference]: Finished difference Result 261 states and 403 transitions. [2020-10-14 07:22:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:22:53,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 07:22:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:53,654 INFO L225 Difference]: With dead ends: 261 [2020-10-14 07:22:53,654 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 07:22:53,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 07:22:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-14 07:22:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 07:22:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 187 transitions. [2020-10-14 07:22:53,672 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 187 transitions. Word has length 25 [2020-10-14 07:22:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:53,672 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 187 transitions. [2020-10-14 07:22:53,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:22:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 187 transitions. [2020-10-14 07:22:53,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 07:22:53,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:53,674 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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 07:22:53,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:22:53,674 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:53,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1818456969, now seen corresponding path program 1 times [2020-10-14 07:22:53,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:53,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207092489] [2020-10-14 07:22:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:54,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:54,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 07:22:54,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:22:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-14 07:22:54,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:54,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:22:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:22:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:22:54,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:54,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:54,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:54,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:22:54,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:54,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:22:54,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207092489] [2020-10-14 07:22:54,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:22:54,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:22:54,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190405577] [2020-10-14 07:22:54,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:22:54,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:22:54,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:54,149 INFO L87 Difference]: Start difference. First operand 124 states and 187 transitions. Second operand 5 states. [2020-10-14 07:22:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:54,753 INFO L93 Difference]: Finished difference Result 223 states and 339 transitions. [2020-10-14 07:22:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:22:54,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-14 07:22:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:54,756 INFO L225 Difference]: With dead ends: 223 [2020-10-14 07:22:54,756 INFO L226 Difference]: Without dead ends: 205 [2020-10-14 07:22:54,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:22:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-14 07:22:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 192. [2020-10-14 07:22:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-14 07:22:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 292 transitions. [2020-10-14 07:22:54,768 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 292 transitions. Word has length 27 [2020-10-14 07:22:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:54,768 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 292 transitions. [2020-10-14 07:22:54,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:22:54,768 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 292 transitions. [2020-10-14 07:22:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 07:22:54,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:54,770 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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 07:22:54,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:22:54,770 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:54,771 INFO L82 PathProgramCache]: Analyzing trace with hash 549034740, now seen corresponding path program 1 times [2020-10-14 07:22:54,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:54,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659889130] [2020-10-14 07:22:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:55,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:55,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:22:55,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:22:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 07:22:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:55,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:22:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:22:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:22:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:55,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:55,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:55,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:22:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:55,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:22:55,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659889130] [2020-10-14 07:22:55,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:22:55,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:22:55,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453332149] [2020-10-14 07:22:55,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:22:55,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:55,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:22:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:55,235 INFO L87 Difference]: Start difference. First operand 192 states and 292 transitions. Second operand 5 states. [2020-10-14 07:22:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:55,834 INFO L93 Difference]: Finished difference Result 261 states and 395 transitions. [2020-10-14 07:22:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:22:55,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-14 07:22:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:55,837 INFO L225 Difference]: With dead ends: 261 [2020-10-14 07:22:55,837 INFO L226 Difference]: Without dead ends: 257 [2020-10-14 07:22:55,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:22:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-14 07:22:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 237. [2020-10-14 07:22:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-14 07:22:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 366 transitions. [2020-10-14 07:22:55,855 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 366 transitions. Word has length 28 [2020-10-14 07:22:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:55,856 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 366 transitions. [2020-10-14 07:22:55,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:22:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 366 transitions. [2020-10-14 07:22:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 07:22:55,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:55,861 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:55,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:22:55,861 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:55,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1113591962, now seen corresponding path program 1 times [2020-10-14 07:22:55,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:55,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163203644] [2020-10-14 07:22:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:55,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:56,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:56,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 07:22:56,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:22:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 07:22:56,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:56,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:22:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:22:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:22:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:56,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:56,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:56,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:56,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:56,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:22:56,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:56,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:56,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:56,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:56,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:56,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:22:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 07:22:56,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163203644] [2020-10-14 07:22:56,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:56,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:22:56,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228320582] [2020-10-14 07:22:56,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:22:56,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:56,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:22:56,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:22:56,059 INFO L87 Difference]: Start difference. First operand 237 states and 366 transitions. Second operand 4 states. [2020-10-14 07:22:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:56,230 INFO L93 Difference]: Finished difference Result 462 states and 707 transitions. [2020-10-14 07:22:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:22:56,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 07:22:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:56,233 INFO L225 Difference]: With dead ends: 462 [2020-10-14 07:22:56,234 INFO L226 Difference]: Without dead ends: 231 [2020-10-14 07:22:56,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-14 07:22:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2020-10-14 07:22:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 07:22:56,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 340 transitions. [2020-10-14 07:22:56,251 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 340 transitions. Word has length 29 [2020-10-14 07:22:56,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:56,252 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 340 transitions. [2020-10-14 07:22:56,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:22:56,252 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 340 transitions. [2020-10-14 07:22:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 07:22:56,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:56,257 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:56,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:22:56,258 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:56,258 INFO L82 PathProgramCache]: Analyzing trace with hash 454582667, now seen corresponding path program 1 times [2020-10-14 07:22:56,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:56,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978791906] [2020-10-14 07:22:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:56,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:56,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 07:22:56,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:56,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 07:22:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:56,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:22:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:22:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:22:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:22:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:56,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:56,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:56,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:22:56,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:56,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 07:22:56,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978791906] [2020-10-14 07:22:56,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:56,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:22:56,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891618689] [2020-10-14 07:22:56,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:22:56,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:56,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:22:56,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:22:56,528 INFO L87 Difference]: Start difference. First operand 229 states and 340 transitions. Second operand 4 states. [2020-10-14 07:22:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:56,572 INFO L93 Difference]: Finished difference Result 233 states and 343 transitions. [2020-10-14 07:22:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:22:56,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 07:22:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:56,574 INFO L225 Difference]: With dead ends: 233 [2020-10-14 07:22:56,574 INFO L226 Difference]: Without dead ends: 227 [2020-10-14 07:22:56,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-14 07:22:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2020-10-14 07:22:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-14 07:22:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 331 transitions. [2020-10-14 07:22:56,586 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 331 transitions. Word has length 31 [2020-10-14 07:22:56,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:56,586 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 331 transitions. [2020-10-14 07:22:56,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:22:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 331 transitions. [2020-10-14 07:22:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 07:22:56,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:56,588 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:56,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:22:56,588 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash 362155736, now seen corresponding path program 1 times [2020-10-14 07:22:56,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:56,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88237449] [2020-10-14 07:22:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:57,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:57,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:57,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:22:57,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:22:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-14 07:22:57,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:57,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:22:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:22:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:22:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:22:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:57,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:57,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:57,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:22:57,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:57,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:22:57,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88237449] [2020-10-14 07:22:57,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:57,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:22:57,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810026679] [2020-10-14 07:22:57,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:22:57,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:57,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:22:57,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:22:57,406 INFO L87 Difference]: Start difference. First operand 225 states and 331 transitions. Second operand 4 states. [2020-10-14 07:22:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:57,565 INFO L93 Difference]: Finished difference Result 446 states and 657 transitions. [2020-10-14 07:22:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:22:57,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-14 07:22:57,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:57,568 INFO L225 Difference]: With dead ends: 446 [2020-10-14 07:22:57,568 INFO L226 Difference]: Without dead ends: 227 [2020-10-14 07:22:57,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:22:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-14 07:22:57,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2020-10-14 07:22:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-14 07:22:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 329 transitions. [2020-10-14 07:22:57,580 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 329 transitions. Word has length 36 [2020-10-14 07:22:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:57,581 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 329 transitions. [2020-10-14 07:22:57,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:22:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 329 transitions. [2020-10-14 07:22:57,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 07:22:57,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:57,582 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:57,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:22:57,582 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:57,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1093179144, now seen corresponding path program 1 times [2020-10-14 07:22:57,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:57,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884007369] [2020-10-14 07:22:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:58,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:58,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:22:58,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:22:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-14 07:22:58,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:58,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:22:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:22:58,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 07:22:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:58,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:58,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:58,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:22:58,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:58,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:22:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:22:58,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884007369] [2020-10-14 07:22:58,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:22:58,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:22:58,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743952373] [2020-10-14 07:22:58,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:22:58,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:58,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:22:58,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:22:58,091 INFO L87 Difference]: Start difference. First operand 225 states and 329 transitions. Second operand 6 states. [2020-10-14 07:22:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:58,778 INFO L93 Difference]: Finished difference Result 313 states and 451 transitions. [2020-10-14 07:22:58,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:22:58,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-14 07:22:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:58,781 INFO L225 Difference]: With dead ends: 313 [2020-10-14 07:22:58,781 INFO L226 Difference]: Without dead ends: 308 [2020-10-14 07:22:58,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:22:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-14 07:22:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 278. [2020-10-14 07:22:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-14 07:22:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 410 transitions. [2020-10-14 07:22:58,796 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 410 transitions. Word has length 37 [2020-10-14 07:22:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:58,796 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 410 transitions. [2020-10-14 07:22:58,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:22:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 410 transitions. [2020-10-14 07:22:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 07:22:58,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:58,797 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:58,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:22:58,798 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash 939353414, now seen corresponding path program 1 times [2020-10-14 07:22:58,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:58,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027664494] [2020-10-14 07:22:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:59,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:59,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:59,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:22:59,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:22:59,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-14 07:22:59,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:59,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:22:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:22:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:22:59,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:59,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:59,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:59,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:59,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:22:59,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:59,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:59,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:59,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:22:59,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027664494] [2020-10-14 07:22:59,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:22:59,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:22:59,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907010865] [2020-10-14 07:22:59,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:22:59,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:59,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:22:59,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:22:59,703 INFO L87 Difference]: Start difference. First operand 278 states and 410 transitions. Second operand 6 states. [2020-10-14 07:23:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:00,390 INFO L93 Difference]: Finished difference Result 295 states and 428 transitions. [2020-10-14 07:23:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:23:00,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-14 07:23:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:00,392 INFO L225 Difference]: With dead ends: 295 [2020-10-14 07:23:00,392 INFO L226 Difference]: Without dead ends: 293 [2020-10-14 07:23:00,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:23:00,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-14 07:23:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 279. [2020-10-14 07:23:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-14 07:23:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 411 transitions. [2020-10-14 07:23:00,404 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 411 transitions. Word has length 40 [2020-10-14 07:23:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:00,405 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 411 transitions. [2020-10-14 07:23:00,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:23:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 411 transitions. [2020-10-14 07:23:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 07:23:00,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:00,406 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:00,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:23:00,406 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash -819577482, now seen corresponding path program 1 times [2020-10-14 07:23:00,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:00,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141731746] [2020-10-14 07:23:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:00,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 07:23:00,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 07:23:00,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:00,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:23:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:23:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:00,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:23:00,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141731746] [2020-10-14 07:23:00,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:00,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:00,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52357528] [2020-10-14 07:23:00,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:00,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:00,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:00,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:00,621 INFO L87 Difference]: Start difference. First operand 279 states and 411 transitions. Second operand 4 states. [2020-10-14 07:23:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:00,750 INFO L93 Difference]: Finished difference Result 537 states and 785 transitions. [2020-10-14 07:23:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:00,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 07:23:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:00,753 INFO L225 Difference]: With dead ends: 537 [2020-10-14 07:23:00,754 INFO L226 Difference]: Without dead ends: 264 [2020-10-14 07:23:00,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-14 07:23:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-10-14 07:23:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-14 07:23:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 376 transitions. [2020-10-14 07:23:00,768 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 376 transitions. Word has length 41 [2020-10-14 07:23:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:00,768 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 376 transitions. [2020-10-14 07:23:00,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:00,768 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 376 transitions. [2020-10-14 07:23:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 07:23:00,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:00,769 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:00,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:23:00,770 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:00,770 INFO L82 PathProgramCache]: Analyzing trace with hash 711556807, now seen corresponding path program 1 times [2020-10-14 07:23:00,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:00,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307908528] [2020-10-14 07:23:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:01,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:01,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:01,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 07:23:01,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-14 07:23:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:01,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:23:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:01,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:01,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:01,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 07:23:01,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307908528] [2020-10-14 07:23:01,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:01,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:01,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739496602] [2020-10-14 07:23:01,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:01,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:01,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:01,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:01,774 INFO L87 Difference]: Start difference. First operand 262 states and 376 transitions. Second operand 4 states. [2020-10-14 07:23:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:01,957 INFO L93 Difference]: Finished difference Result 428 states and 609 transitions. [2020-10-14 07:23:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:01,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 07:23:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:01,959 INFO L225 Difference]: With dead ends: 428 [2020-10-14 07:23:01,959 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 07:23:01,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 07:23:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-10-14 07:23:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 07:23:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 237 transitions. [2020-10-14 07:23:01,968 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 237 transitions. Word has length 50 [2020-10-14 07:23:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:01,969 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 237 transitions. [2020-10-14 07:23:01,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 237 transitions. [2020-10-14 07:23:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 07:23:01,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:01,970 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:01,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:23:01,970 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:01,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:01,971 INFO L82 PathProgramCache]: Analyzing trace with hash -370372205, now seen corresponding path program 1 times [2020-10-14 07:23:01,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:01,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574353034] [2020-10-14 07:23:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:02,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:02,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 07:23:02,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:02,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-14 07:23:02,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:02,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:23:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 07:23:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:02,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:02,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:02,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:02,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:02,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:02,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 07:23:02,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574353034] [2020-10-14 07:23:02,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:02,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:23:02,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157015529] [2020-10-14 07:23:02,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:23:02,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:02,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:23:02,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:23:02,648 INFO L87 Difference]: Start difference. First operand 170 states and 237 transitions. Second operand 6 states. [2020-10-14 07:23:03,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:03,246 INFO L93 Difference]: Finished difference Result 240 states and 330 transitions. [2020-10-14 07:23:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:23:03,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 07:23:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:03,249 INFO L225 Difference]: With dead ends: 240 [2020-10-14 07:23:03,249 INFO L226 Difference]: Without dead ends: 236 [2020-10-14 07:23:03,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:23:03,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-14 07:23:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 211. [2020-10-14 07:23:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 07:23:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 296 transitions. [2020-10-14 07:23:03,263 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 296 transitions. Word has length 51 [2020-10-14 07:23:03,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:03,263 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 296 transitions. [2020-10-14 07:23:03,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:23:03,263 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 296 transitions. [2020-10-14 07:23:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 07:23:03,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:03,264 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:03,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:23:03,264 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:03,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:03,265 INFO L82 PathProgramCache]: Analyzing trace with hash 680264501, now seen corresponding path program 1 times [2020-10-14 07:23:03,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:03,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249878725] [2020-10-14 07:23:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:03,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:03,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:03,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 07:23:03,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-14 07:23:03,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:03,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:23:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 07:23:03,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:04,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:04,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:04,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:04,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:04,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:04,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:04,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:04,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:04,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:04,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:04,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:04,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:23:04,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249878725] [2020-10-14 07:23:04,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:04,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:23:04,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350668887] [2020-10-14 07:23:04,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:23:04,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:04,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:23:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:23:04,130 INFO L87 Difference]: Start difference. First operand 211 states and 296 transitions. Second operand 7 states. [2020-10-14 07:23:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:04,853 INFO L93 Difference]: Finished difference Result 235 states and 323 transitions. [2020-10-14 07:23:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:23:04,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-14 07:23:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:04,856 INFO L225 Difference]: With dead ends: 235 [2020-10-14 07:23:04,856 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 07:23:04,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:23:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 07:23:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 211. [2020-10-14 07:23:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 07:23:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 295 transitions. [2020-10-14 07:23:04,868 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 295 transitions. Word has length 55 [2020-10-14 07:23:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:04,868 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 295 transitions. [2020-10-14 07:23:04,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:23:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 295 transitions. [2020-10-14 07:23:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 07:23:04,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:04,869 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:04,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:23:04,870 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:04,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:04,870 INFO L82 PathProgramCache]: Analyzing trace with hash -379328264, now seen corresponding path program 1 times [2020-10-14 07:23:04,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:04,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428879663] [2020-10-14 07:23:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:05,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:05,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:05,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 07:23:05,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-14 07:23:05,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:05,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:23:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:23:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 07:23:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:06,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:06,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:06,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:06,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:06,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:06,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:23:06,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428879663] [2020-10-14 07:23:06,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:06,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:23:06,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965874036] [2020-10-14 07:23:06,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:23:06,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:06,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:23:06,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:23:06,239 INFO L87 Difference]: Start difference. First operand 211 states and 295 transitions. Second operand 8 states. [2020-10-14 07:23:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:07,317 INFO L93 Difference]: Finished difference Result 249 states and 338 transitions. [2020-10-14 07:23:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:23:07,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-14 07:23:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:07,320 INFO L225 Difference]: With dead ends: 249 [2020-10-14 07:23:07,320 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 07:23:07,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:23:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 07:23:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 212. [2020-10-14 07:23:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-14 07:23:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2020-10-14 07:23:07,333 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 61 [2020-10-14 07:23:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:07,333 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2020-10-14 07:23:07,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:23:07,333 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2020-10-14 07:23:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 07:23:07,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:07,334 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:07,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:23:07,335 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash 638427137, now seen corresponding path program 1 times [2020-10-14 07:23:07,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:07,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685992908] [2020-10-14 07:23:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:07,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:10,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:10,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 07:23:10,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:10,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3243 [2020-10-14 07:23:10,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:10,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:23:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 07:23:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:23:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:10,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:10,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:10,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 07:23:10,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685992908] [2020-10-14 07:23:10,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:10,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 07:23:10,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099694588] [2020-10-14 07:23:10,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:23:10,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:10,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:23:10,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:10,758 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand 5 states. [2020-10-14 07:23:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:11,194 INFO L93 Difference]: Finished difference Result 220 states and 302 transitions. [2020-10-14 07:23:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:23:11,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-14 07:23:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:11,196 INFO L225 Difference]: With dead ends: 220 [2020-10-14 07:23:11,196 INFO L226 Difference]: Without dead ends: 217 [2020-10-14 07:23:11,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:23:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-14 07:23:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2020-10-14 07:23:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 07:23:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 293 transitions. [2020-10-14 07:23:11,208 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 293 transitions. Word has length 70 [2020-10-14 07:23:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:11,208 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 293 transitions. [2020-10-14 07:23:11,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:23:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 293 transitions. [2020-10-14 07:23:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 07:23:11,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:11,215 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:11,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 07:23:11,215 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -784011109, now seen corresponding path program 1 times [2020-10-14 07:23:11,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:11,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918956734] [2020-10-14 07:23:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:11,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:12,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:13,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:13,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 07:23:13,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:13,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1929 [2020-10-14 07:23:13,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:13,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:23:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 07:23:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:23:13,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:13,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:13,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:13,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:13,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:13,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:13,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:13,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 07:23:13,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918956734] [2020-10-14 07:23:13,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:13,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 07:23:13,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495527161] [2020-10-14 07:23:13,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:23:13,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:23:13,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:13,306 INFO L87 Difference]: Start difference. First operand 211 states and 293 transitions. Second operand 5 states. [2020-10-14 07:23:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:13,651 INFO L93 Difference]: Finished difference Result 223 states and 301 transitions. [2020-10-14 07:23:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:23:13,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-14 07:23:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:13,653 INFO L225 Difference]: With dead ends: 223 [2020-10-14 07:23:13,653 INFO L226 Difference]: Without dead ends: 220 [2020-10-14 07:23:13,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:23:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-14 07:23:13,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 210. [2020-10-14 07:23:13,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 07:23:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 291 transitions. [2020-10-14 07:23:13,664 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 291 transitions. Word has length 79 [2020-10-14 07:23:13,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:13,665 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 291 transitions. [2020-10-14 07:23:13,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:23:13,665 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 291 transitions. [2020-10-14 07:23:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 07:23:13,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:13,666 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:13,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 07:23:13,666 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:13,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1961279789, now seen corresponding path program 1 times [2020-10-14 07:23:13,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:13,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855122554] [2020-10-14 07:23:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:13,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:14,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:16,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:16,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 07:23:16,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:16,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2546 [2020-10-14 07:23:16,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:16,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:23:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 07:23:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:23:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:16,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:16,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:16,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:16,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:16,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 59 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 07:23:16,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855122554] [2020-10-14 07:23:16,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:16,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:23:16,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820254527] [2020-10-14 07:23:16,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:23:16,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:16,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:23:16,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:23:16,490 INFO L87 Difference]: Start difference. First operand 210 states and 291 transitions. Second operand 6 states. [2020-10-14 07:23:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:17,111 INFO L93 Difference]: Finished difference Result 220 states and 298 transitions. [2020-10-14 07:23:17,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:23:17,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-14 07:23:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:17,120 INFO L225 Difference]: With dead ends: 220 [2020-10-14 07:23:17,120 INFO L226 Difference]: Without dead ends: 218 [2020-10-14 07:23:17,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:23:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-14 07:23:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2020-10-14 07:23:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 07:23:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 290 transitions. [2020-10-14 07:23:17,132 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 290 transitions. Word has length 82 [2020-10-14 07:23:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:17,132 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 290 transitions. [2020-10-14 07:23:17,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:23:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 290 transitions. [2020-10-14 07:23:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 07:23:17,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:17,133 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:17,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 07:23:17,134 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:17,134 INFO L82 PathProgramCache]: Analyzing trace with hash -101241370, now seen corresponding path program 1 times [2020-10-14 07:23:17,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:17,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307685122] [2020-10-14 07:23:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:19,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:19,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 07:23:19,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2331 [2020-10-14 07:23:19,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:19,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 07:23:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:23:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:19,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:19,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:19,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:19,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:19,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:19,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:23:19,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:19,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:19,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 87 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 07:23:19,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307685122] [2020-10-14 07:23:19,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:19,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:23:19,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574800396] [2020-10-14 07:23:19,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:23:19,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:19,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:23:19,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:23:19,634 INFO L87 Difference]: Start difference. First operand 210 states and 290 transitions. Second operand 6 states. [2020-10-14 07:23:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:20,228 INFO L93 Difference]: Finished difference Result 218 states and 296 transitions. [2020-10-14 07:23:20,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:23:20,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-14 07:23:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:20,231 INFO L225 Difference]: With dead ends: 218 [2020-10-14 07:23:20,231 INFO L226 Difference]: Without dead ends: 214 [2020-10-14 07:23:20,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:23:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-14 07:23:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2020-10-14 07:23:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 07:23:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 286 transitions. [2020-10-14 07:23:20,247 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 286 transitions. Word has length 93 [2020-10-14 07:23:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:20,247 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 286 transitions. [2020-10-14 07:23:20,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:23:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 286 transitions. [2020-10-14 07:23:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 07:23:20,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:20,250 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:20,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 07:23:20,250 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:20,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1099284984, now seen corresponding path program 1 times [2020-10-14 07:23:20,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:20,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173792005] [2020-10-14 07:23:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:24,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 07:23:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:24,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4285 [2020-10-14 07:23:24,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:24,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:23:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 07:23:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:23:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:24,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:24,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:24,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:24,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:24,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:24,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:24,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:24,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:24,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 93 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 07:23:24,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173792005] [2020-10-14 07:23:24,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:24,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:23:24,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40785126] [2020-10-14 07:23:24,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:23:24,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:24,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:23:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:23:24,869 INFO L87 Difference]: Start difference. First operand 208 states and 286 transitions. Second operand 7 states. [2020-10-14 07:23:25,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:25,646 INFO L93 Difference]: Finished difference Result 225 states and 304 transitions. [2020-10-14 07:23:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:23:25,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-14 07:23:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:25,650 INFO L225 Difference]: With dead ends: 225 [2020-10-14 07:23:25,650 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 07:23:25,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:23:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 07:23:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 208. [2020-10-14 07:23:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 07:23:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 285 transitions. [2020-10-14 07:23:25,671 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 285 transitions. Word has length 97 [2020-10-14 07:23:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:25,671 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 285 transitions. [2020-10-14 07:23:25,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:23:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 285 transitions. [2020-10-14 07:23:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 07:23:25,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:25,673 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:25,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 07:23:25,673 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:25,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1744733813, now seen corresponding path program 2 times [2020-10-14 07:23:25,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:25,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53018386] [2020-10-14 07:23:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:25,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:29,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:29,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 07:23:29,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:23:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3808 [2020-10-14 07:23:29,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:29,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:23:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 07:23:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 07:23:29,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:29,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:29,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:29,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:29,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:23:29,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:29,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 115 proven. 26 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 07:23:29,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53018386] [2020-10-14 07:23:29,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:23:29,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:23:29,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676579776] [2020-10-14 07:23:29,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:23:29,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:29,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:23:29,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:23:29,964 INFO L87 Difference]: Start difference. First operand 208 states and 285 transitions. Second operand 8 states. [2020-10-14 07:23:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:31,268 INFO L93 Difference]: Finished difference Result 223 states and 302 transitions. [2020-10-14 07:23:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:23:31,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-14 07:23:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:31,276 INFO L225 Difference]: With dead ends: 223 [2020-10-14 07:23:31,276 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 07:23:31,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:23:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 07:23:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 07:23:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 07:23:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 07:23:31,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2020-10-14 07:23:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:31,278 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 07:23:31,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:23:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 07:23:31,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 07:23:31,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 07:23:31,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 07:23:31,537 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 132 [2020-10-14 07:23:31,874 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 144 [2020-10-14 07:23:32,423 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 53 [2020-10-14 07:23:32,914 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 53 [2020-10-14 07:23:32,919 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 07:23:32,920 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_recv_ack_2~0 |old(~m_recv_ack_2~0)|) (= ~m_msg_1_2~0 |old(~m_msg_1_2~0)|) (= ~m_Protocol~0 |old(~m_Protocol~0)|) (= ~m_recv_ack_1_2~0 |old(~m_recv_ack_1_2~0)|) (= ~m_msg_2~0 |old(~m_msg_2~0)|) (= ~m_recv_ack_1_1~0 |old(~m_recv_ack_1_1~0)|) (= ~m_msg_1_1~0 |old(~m_msg_1_1~0)|)) [2020-10-14 07:23:32,920 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:23:32,920 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:23:32,920 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 07:23:32,920 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 07:23:32,920 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 566) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point L498(lines 498 500) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point L366(lines 366 368) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point L466(lines 466 468) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 566) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point L39(lines 39 58) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point L40(lines 40 55) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-10-14 07:23:32,921 INFO L268 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-10-14 07:23:32,922 INFO L268 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-10-14 07:23:32,922 INFO L268 CegarLoopResult]: For program point L42(lines 42 53) no Hoare annotation was computed. [2020-10-14 07:23:32,922 INFO L268 CegarLoopResult]: For program point L340(lines 340 355) no Hoare annotation was computed. [2020-10-14 07:23:32,922 INFO L268 CegarLoopResult]: For program point L208(lines 208 223) no Hoare annotation was computed. [2020-10-14 07:23:32,922 INFO L268 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-10-14 07:23:32,922 INFO L268 CegarLoopResult]: For program point L76(lines 76 91) no Hoare annotation was computed. [2020-10-14 07:23:32,922 INFO L268 CegarLoopResult]: For program point L440(lines 440 455) no Hoare annotation was computed. [2020-10-14 07:23:32,922 INFO L268 CegarLoopResult]: For program point L308(lines 308 323) no Hoare annotation was computed. [2020-10-14 07:23:32,923 INFO L268 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-10-14 07:23:32,923 INFO L268 CegarLoopResult]: For program point L176(lines 176 191) no Hoare annotation was computed. [2020-10-14 07:23:32,923 INFO L268 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-10-14 07:23:32,923 INFO L268 CegarLoopResult]: For program point L540(lines 540 555) no Hoare annotation was computed. [2020-10-14 07:23:32,923 INFO L268 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-10-14 07:23:32,923 INFO L268 CegarLoopResult]: For program point L342(lines 342 353) no Hoare annotation was computed. [2020-10-14 07:23:32,923 INFO L268 CegarLoopResult]: For program point L276(lines 276 291) no Hoare annotation was computed. [2020-10-14 07:23:32,923 INFO L268 CegarLoopResult]: For program point L210(lines 210 221) no Hoare annotation was computed. [2020-10-14 07:23:32,924 INFO L268 CegarLoopResult]: For program point L78(lines 78 89) no Hoare annotation was computed. [2020-10-14 07:23:32,924 INFO L268 CegarLoopResult]: For program point L508(lines 508 523) no Hoare annotation was computed. [2020-10-14 07:23:32,924 INFO L268 CegarLoopResult]: For program point L442(lines 442 453) no Hoare annotation was computed. [2020-10-14 07:23:32,924 INFO L268 CegarLoopResult]: For program point L376(lines 376 391) no Hoare annotation was computed. [2020-10-14 07:23:32,924 INFO L268 CegarLoopResult]: For program point L310(lines 310 321) no Hoare annotation was computed. [2020-10-14 07:23:32,924 INFO L268 CegarLoopResult]: For program point L178(lines 178 189) no Hoare annotation was computed. [2020-10-14 07:23:32,924 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-10-14 07:23:32,924 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 565) no Hoare annotation was computed. [2020-10-14 07:23:32,925 INFO L268 CegarLoopResult]: For program point L542(lines 542 553) no Hoare annotation was computed. [2020-10-14 07:23:32,925 INFO L268 CegarLoopResult]: For program point L476(lines 476 491) no Hoare annotation was computed. [2020-10-14 07:23:32,925 INFO L268 CegarLoopResult]: For program point L410(lines 410 421) no Hoare annotation was computed. [2020-10-14 07:23:32,925 INFO L268 CegarLoopResult]: For program point L278(lines 278 289) no Hoare annotation was computed. [2020-10-14 07:23:32,925 INFO L268 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-10-14 07:23:32,925 INFO L268 CegarLoopResult]: For program point L510(lines 510 521) no Hoare annotation was computed. [2020-10-14 07:23:32,925 INFO L268 CegarLoopResult]: For program point L378(lines 378 389) no Hoare annotation was computed. [2020-10-14 07:23:32,925 INFO L268 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L478(lines 478 489) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L346(lines 346 348) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L214(lines 214 216) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L82(lines 82 84) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L446(lines 446 448) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L314(lines 314 316) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L182(lines 182 184) no Hoare annotation was computed. [2020-10-14 07:23:32,926 INFO L268 CegarLoopResult]: For program point L546(lines 546 548) no Hoare annotation was computed. [2020-10-14 07:23:32,927 INFO L268 CegarLoopResult]: For program point L414(lines 414 416) no Hoare annotation was computed. [2020-10-14 07:23:32,927 INFO L268 CegarLoopResult]: For program point L282(lines 282 284) no Hoare annotation was computed. [2020-10-14 07:23:32,927 INFO L264 CegarLoopResult]: At program point L547(lines 14 566) the Hoare annotation is: false [2020-10-14 07:23:32,927 INFO L268 CegarLoopResult]: For program point L514(lines 514 516) no Hoare annotation was computed. [2020-10-14 07:23:32,927 INFO L268 CegarLoopResult]: For program point L382(lines 382 384) no Hoare annotation was computed. [2020-10-14 07:23:32,927 INFO L268 CegarLoopResult]: For program point L482(lines 482 484) no Hoare annotation was computed. [2020-10-14 07:23:32,928 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 561) the Hoare annotation is: (let ((.cse5 (< 0 (+ (div main_~this_buffer_empty~0 4294967296) 1))) (.cse6 (<= main_~this_buffer_empty~0 0)) (.cse4 (<= 0 (+ main_~this_expect~0 (* 2 (div (* main_~this_expect~0 (- 1)) 2))))) (.cse0 (<= 0 (+ main_~P8~0 2147483648))) (.cse1 (<= main_~this_buffer_empty~0 1)) (.cse2 (<= main_~P8~0 2147483647)) (.cse3 (<= 1 main_~this_buffer_empty~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= main_~q~0 1)) (and .cse0 .cse2 (<= 3 main_~q~0) (<= main_~this_expect~0 (+ (* 2 (div (+ main_~this_expect~0 (- 1)) 2)) 1)) .cse5 (<= main_~q~0 3) .cse6) (and .cse0 .cse2 .cse4 (<= 5 main_~q~0) .cse5 .cse6) (and (let ((.cse7 (<= main_~q~0 0))) (or (and .cse7 .cse1 .cse3) (and .cse7 .cse5 .cse6))) .cse4) (and (<= main_~q~0 4) .cse0 .cse1 .cse2 .cse3 (<= 4 main_~q~0) (not (= (* (div main_~this_expect~0 2) 2) main_~this_expect~0))))) [2020-10-14 07:23:32,928 INFO L268 CegarLoopResult]: For program point L24-3(lines 24 561) no Hoare annotation was computed. [2020-10-14 07:23:32,928 INFO L268 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-10-14 07:23:32,928 INFO L268 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-10-14 07:23:32,928 INFO L268 CegarLoopResult]: For program point L92(lines 92 107) no Hoare annotation was computed. [2020-10-14 07:23:32,928 INFO L268 CegarLoopResult]: For program point L59(lines 59 158) no Hoare annotation was computed. [2020-10-14 07:23:32,928 INFO L268 CegarLoopResult]: For program point L324(lines 324 339) no Hoare annotation was computed. [2020-10-14 07:23:32,928 INFO L268 CegarLoopResult]: For program point L192(lines 192 207) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L159(lines 159 258) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L60(lines 60 75) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L424(lines 424 439) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L292(lines 292 307) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L259(lines 259 358) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L160(lines 160 175) no Hoare annotation was computed. [2020-10-14 07:23:32,929 INFO L268 CegarLoopResult]: For program point L94(lines 94 105) no Hoare annotation was computed. [2020-10-14 07:23:32,930 INFO L264 CegarLoopResult]: At program point L557(lines 24 561) the Hoare annotation is: (let ((.cse5 (< 0 (+ (div main_~this_buffer_empty~0 4294967296) 1))) (.cse6 (<= main_~this_buffer_empty~0 0)) (.cse4 (<= 0 (+ main_~this_expect~0 (* 2 (div (* main_~this_expect~0 (- 1)) 2))))) (.cse0 (<= 0 (+ main_~P8~0 2147483648))) (.cse1 (<= main_~this_buffer_empty~0 1)) (.cse2 (<= main_~P8~0 2147483647)) (.cse3 (<= 1 main_~this_buffer_empty~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= main_~q~0 1)) (and .cse0 .cse2 (<= 3 main_~q~0) (<= main_~this_expect~0 (+ (* 2 (div (+ main_~this_expect~0 (- 1)) 2)) 1)) .cse5 (<= main_~q~0 3) .cse6) (and .cse0 .cse2 .cse4 (<= 5 main_~q~0) .cse5 .cse6) (and (let ((.cse7 (<= main_~q~0 0))) (or (and .cse7 .cse1 .cse3) (and .cse7 .cse5 .cse6))) .cse4) (and (<= main_~q~0 4) .cse0 .cse1 .cse2 .cse3 (<= 4 main_~q~0) (not (= (* (div main_~this_expect~0 2) 2) main_~this_expect~0))))) [2020-10-14 07:23:32,930 INFO L268 CegarLoopResult]: For program point L524(lines 524 539) no Hoare annotation was computed. [2020-10-14 07:23:32,930 INFO L268 CegarLoopResult]: For program point L392(lines 392 407) no Hoare annotation was computed. [2020-10-14 07:23:32,930 INFO L268 CegarLoopResult]: For program point L359(lines 359 458) no Hoare annotation was computed. [2020-10-14 07:23:32,930 INFO L268 CegarLoopResult]: For program point L326(lines 326 337) no Hoare annotation was computed. [2020-10-14 07:23:32,930 INFO L268 CegarLoopResult]: For program point L260(lines 260 275) no Hoare annotation was computed. [2020-10-14 07:23:32,930 INFO L268 CegarLoopResult]: For program point L194(lines 194 205) no Hoare annotation was computed. [2020-10-14 07:23:32,930 INFO L268 CegarLoopResult]: For program point L62(lines 62 73) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L492(lines 492 507) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L459(lines 459 558) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L426(lines 426 437) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L360(lines 360 375) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L294(lines 294 305) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L162(lines 162 173) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 566) the Hoare annotation is: true [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L526(lines 526 537) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L460(lines 460 475) no Hoare annotation was computed. [2020-10-14 07:23:32,931 INFO L268 CegarLoopResult]: For program point L394(lines 394 405) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L262(lines 262 273) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L494(lines 494 505) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L362(lines 362 373) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L98(lines 98 100) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L462(lines 462 473) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L330(lines 330 332) no Hoare annotation was computed. [2020-10-14 07:23:32,932 INFO L268 CegarLoopResult]: For program point L198(lines 198 200) no Hoare annotation was computed. [2020-10-14 07:23:32,933 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-10-14 07:23:32,933 INFO L268 CegarLoopResult]: For program point L430(lines 430 432) no Hoare annotation was computed. [2020-10-14 07:23:32,933 INFO L268 CegarLoopResult]: For program point L298(lines 298 300) no Hoare annotation was computed. [2020-10-14 07:23:32,933 INFO L268 CegarLoopResult]: For program point L166(lines 166 168) no Hoare annotation was computed. [2020-10-14 07:23:32,933 INFO L268 CegarLoopResult]: For program point L530(lines 530 532) no Hoare annotation was computed. [2020-10-14 07:23:32,933 INFO L268 CegarLoopResult]: For program point L398(lines 398 400) no Hoare annotation was computed. [2020-10-14 07:23:32,933 INFO L268 CegarLoopResult]: For program point L266(lines 266 268) no Hoare annotation was computed. [2020-10-14 07:23:32,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:23:32 BoogieIcfgContainer [2020-10-14 07:23:32,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 07:23:32,958 INFO L168 Benchmark]: Toolchain (without parser) took 44109.60 ms. Allocated memory was 147.8 MB in the beginning and 852.5 MB in the end (delta: 704.6 MB). Free memory was 103.3 MB in the beginning and 687.6 MB in the end (delta: -584.3 MB). Peak memory consumption was 725.5 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:32,959 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 07:23:32,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.75 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.3 MB in the beginning and 175.7 MB in the end (delta: -72.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:32,960 INFO L168 Benchmark]: Boogie Preprocessor took 88.35 ms. Allocated memory is still 203.9 MB. Free memory was 175.7 MB in the beginning and 172.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:32,961 INFO L168 Benchmark]: RCFGBuilder took 1002.12 ms. Allocated memory is still 203.9 MB. Free memory was 172.5 MB in the beginning and 118.7 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:32,961 INFO L168 Benchmark]: TraceAbstraction took 42466.81 ms. Allocated memory was 203.9 MB in the beginning and 852.5 MB in the end (delta: 648.5 MB). Free memory was 117.7 MB in the beginning and 687.6 MB in the end (delta: -569.8 MB). Peak memory consumption was 683.8 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:32,964 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 545.75 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.3 MB in the beginning and 175.7 MB in the end (delta: -72.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.35 ms. Allocated memory is still 203.9 MB. Free memory was 175.7 MB in the beginning and 172.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1002.12 ms. Allocated memory is still 203.9 MB. Free memory was 172.5 MB in the beginning and 118.7 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42466.81 ms. Allocated memory was 203.9 MB in the beginning and 852.5 MB in the end (delta: 648.5 MB). Free memory was 117.7 MB in the beginning and 687.6 MB in the end (delta: -569.8 MB). Peak memory consumption was 683.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 565]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((0 <= P8 + 2147483648 && this_buffer_empty <= 1) && P8 <= 2147483647) && 1 <= this_buffer_empty) && 0 <= this_expect + 2 * (this_expect * -1 / 2)) && q <= 1) || ((((((0 <= P8 + 2147483648 && P8 <= 2147483647) && 3 <= q) && this_expect <= 2 * ((this_expect + -1) / 2) + 1) && 0 < this_buffer_empty / 4294967296 + 1) && q <= 3) && this_buffer_empty <= 0)) || (((((0 <= P8 + 2147483648 && P8 <= 2147483647) && 0 <= this_expect + 2 * (this_expect * -1 / 2)) && 5 <= q) && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)) || ((((q <= 0 && this_buffer_empty <= 1) && 1 <= this_buffer_empty) || ((q <= 0 && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)) && 0 <= this_expect + 2 * (this_expect * -1 / 2))) || ((((((q <= 4 && 0 <= P8 + 2147483648) && this_buffer_empty <= 1) && P8 <= 2147483647) && 1 <= this_buffer_empty) && 4 <= q) && !(this_expect / 2 * 2 == this_expect)) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((0 <= P8 + 2147483648 && this_buffer_empty <= 1) && P8 <= 2147483647) && 1 <= this_buffer_empty) && 0 <= this_expect + 2 * (this_expect * -1 / 2)) && q <= 1) || ((((((0 <= P8 + 2147483648 && P8 <= 2147483647) && 3 <= q) && this_expect <= 2 * ((this_expect + -1) / 2) + 1) && 0 < this_buffer_empty / 4294967296 + 1) && q <= 3) && this_buffer_empty <= 0)) || (((((0 <= P8 + 2147483648 && P8 <= 2147483647) && 0 <= this_expect + 2 * (this_expect * -1 / 2)) && 5 <= q) && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)) || ((((q <= 0 && this_buffer_empty <= 1) && 1 <= this_buffer_empty) || ((q <= 0 && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)) && 0 <= this_expect + 2 * (this_expect * -1 / 2))) || ((((((q <= 4 && 0 <= P8 + 2147483648) && this_buffer_empty <= 1) && P8 <= 2147483647) && 1 <= this_buffer_empty) && 4 <= q) && !(this_expect / 2 * 2 == this_expect)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.7s, OverallIterations: 23, TraceHistogramMax: 10, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3277 SDtfs, 5807 SDslu, 297 SDs, 0 SdLazy, 5585 SolverSat, 209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 238 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 33 NumberOfFragments, 356 HoareAnnotationTreeSize, 7 FomulaSimplifications, 1865319 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 95229 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 1101 NumberOfCodeBlocks, 1101 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1078 ConstructedInterpolants, 0 QuantifiedInterpolants, 510126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 889/1060 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...