/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:15:38,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:15:38,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:15:38,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:15:38,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:15:38,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:15:38,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:15:38,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:15:38,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:15:38,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:15:38,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:15:38,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:15:38,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:15:38,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:15:38,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:15:38,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:15:38,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:15:38,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:15:38,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:15:38,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:15:38,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:15:38,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:15:38,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:15:38,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:15:38,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:15:38,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:15:38,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:15:38,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:15:38,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:15:38,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:15:38,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:15:38,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:15:38,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:15:38,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:15:38,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:15:38,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:15:38,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:15:38,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:15:38,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:15:38,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:15:38,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:15:38,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:15:38,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:15:38,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:15:38,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:15:38,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:15:38,585 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:15:38,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:15:38,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:15:38,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:15:38,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:15:38,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:15:38,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:15:38,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:15:38,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:15:38,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:15:38,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:15:38,589 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:15:38,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:15:38,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:15:38,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:15:38,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:15:38,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:15:38,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:15:38,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:15:38,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:15:38,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:15:38,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:15:38,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:15:38,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:15:38,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:15:38,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:15:38,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:15:38,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:15:38,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:15:38,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:15:38,895 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:15:38,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:15:38,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c5f1823/f84e8efb28db44a89dba7efe1658d44b/FLAGe73d223ed [2020-10-12 20:15:39,514 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:15:39,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:15:39,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c5f1823/f84e8efb28db44a89dba7efe1658d44b/FLAGe73d223ed [2020-10-12 20:15:39,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c5f1823/f84e8efb28db44a89dba7efe1658d44b [2020-10-12 20:15:39,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:15:39,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:15:39,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:15:39,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:15:39,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:15:39,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:15:39" (1/1) ... [2020-10-12 20:15:39,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf2a9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:39, skipping insertion in model container [2020-10-12 20:15:39,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:15:39" (1/1) ... [2020-10-12 20:15:39,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:15:39,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:15:40,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:15:40,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:15:40,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:15:40,548 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:15:40,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40 WrapperNode [2020-10-12 20:15:40,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:15:40,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:15:40,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:15:40,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:15:40,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (1/1) ... [2020-10-12 20:15:40,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (1/1) ... [2020-10-12 20:15:40,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (1/1) ... [2020-10-12 20:15:40,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (1/1) ... [2020-10-12 20:15:40,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (1/1) ... [2020-10-12 20:15:40,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (1/1) ... [2020-10-12 20:15:40,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (1/1) ... [2020-10-12 20:15:40,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:15:40,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:15:40,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:15:40,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:15:40,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:15:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:15:40,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:15:40,736 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:15:40,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:15:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:15:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:15:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:15:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:15:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:15:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:15:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:15:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:15:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:15:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:15:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:15:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:15:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:15:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:15:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:15:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:15:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:15:41,911 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:15:41,911 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:15:41,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:15:41 BoogieIcfgContainer [2020-10-12 20:15:41,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:15:41,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:15:41,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:15:41,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:15:41,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:15:39" (1/3) ... [2020-10-12 20:15:41,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dba90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:15:41, skipping insertion in model container [2020-10-12 20:15:41,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:40" (2/3) ... [2020-10-12 20:15:41,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dba90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:15:41, skipping insertion in model container [2020-10-12 20:15:41,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:15:41" (3/3) ... [2020-10-12 20:15:41,926 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:15:41,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:15:41,946 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-12 20:15:41,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-12 20:15:41,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:15:41,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:15:41,991 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:15:41,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:15:41,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:15:41,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:15:41,992 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:15:41,992 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:15:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states. [2020-10-12 20:15:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:15:42,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:42,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:15:42,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:42,040 INFO L82 PathProgramCache]: Analyzing trace with hash 538953665, now seen corresponding path program 1 times [2020-10-12 20:15:42,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:42,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081971719] [2020-10-12 20:15:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:42,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:45,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:47,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:47,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:15:47,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:15:47,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:15:47,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:47,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 20:15:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:15:48,010 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:15:48,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:48,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:15:48,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:15:48,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081971719] [2020-10-12 20:15:48,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:48,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:48,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518662198] [2020-10-12 20:15:48,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:48,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:48,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:48,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:48,160 INFO L87 Difference]: Start difference. First operand 275 states. Second operand 5 states. [2020-10-12 20:15:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:50,894 INFO L93 Difference]: Finished difference Result 696 states and 1218 transitions. [2020-10-12 20:15:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:15:50,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 20:15:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:50,931 INFO L225 Difference]: With dead ends: 696 [2020-10-12 20:15:50,932 INFO L226 Difference]: Without dead ends: 512 [2020-10-12 20:15:50,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:15:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-12 20:15:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2020-10-12 20:15:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-12 20:15:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 707 transitions. [2020-10-12 20:15:51,046 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 707 transitions. Word has length 102 [2020-10-12 20:15:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:51,046 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 707 transitions. [2020-10-12 20:15:51,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 707 transitions. [2020-10-12 20:15:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:15:51,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:51,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:15:51,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:15:51,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash -660772205, now seen corresponding path program 1 times [2020-10-12 20:15:51,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:51,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887850807] [2020-10-12 20:15:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:51,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:51,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:53,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:56,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:56,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:15:56,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:15:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:15:56,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:15:56,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-12 20:15:56,447 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:15:56,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:56,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:56,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:56,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:56,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:15:56,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:56,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:15:56,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887850807] [2020-10-12 20:15:56,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:56,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:56,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142497415] [2020-10-12 20:15:56,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:56,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:56,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:56,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:56,505 INFO L87 Difference]: Start difference. First operand 485 states and 707 transitions. Second operand 5 states. [2020-10-12 20:15:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:58,338 INFO L93 Difference]: Finished difference Result 1380 states and 1999 transitions. [2020-10-12 20:15:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:15:58,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 20:15:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:58,348 INFO L225 Difference]: With dead ends: 1380 [2020-10-12 20:15:58,348 INFO L226 Difference]: Without dead ends: 924 [2020-10-12 20:15:58,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:15:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-10-12 20:15:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 897. [2020-10-12 20:15:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-12 20:15:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1295 transitions. [2020-10-12 20:15:58,424 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1295 transitions. Word has length 103 [2020-10-12 20:15:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:58,424 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1295 transitions. [2020-10-12 20:15:58,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1295 transitions. [2020-10-12 20:15:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 20:15:58,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:58,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:15:58,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:15:58,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:58,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:58,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1912823555, now seen corresponding path program 1 times [2020-10-12 20:15:58,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:58,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198803811] [2020-10-12 20:15:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:58,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:58,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:02,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:02,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:02,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:03,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:03,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 20:16:03,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:16:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:16:03,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:16:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:16:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:03,755 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:03,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:03,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:03,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:03,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 20:16:03,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:03,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198803811] [2020-10-12 20:16:03,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:03,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:03,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136454466] [2020-10-12 20:16:03,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:03,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:03,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:03,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:03,814 INFO L87 Difference]: Start difference. First operand 897 states and 1295 transitions. Second operand 5 states. [2020-10-12 20:16:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:04,908 INFO L93 Difference]: Finished difference Result 1556 states and 2239 transitions. [2020-10-12 20:16:04,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:04,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 20:16:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:04,913 INFO L225 Difference]: With dead ends: 1556 [2020-10-12 20:16:04,913 INFO L226 Difference]: Without dead ends: 703 [2020-10-12 20:16:04,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-12 20:16:04,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 699. [2020-10-12 20:16:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-10-12 20:16:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1004 transitions. [2020-10-12 20:16:04,956 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1004 transitions. Word has length 104 [2020-10-12 20:16:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:04,957 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 1004 transitions. [2020-10-12 20:16:04,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:04,957 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1004 transitions. [2020-10-12 20:16:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:16:04,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:04,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:04,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:16:04,960 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:04,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:04,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1466628914, now seen corresponding path program 1 times [2020-10-12 20:16:04,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:04,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402650641] [2020-10-12 20:16:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:05,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:05,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:08,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:08,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:09,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:10,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:10,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:16:10,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:16:10,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:16:10,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:10,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 20:16:10,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:10,342 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:10,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:10,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:10,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:10,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:10,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:16:10,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:10,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402650641] [2020-10-12 20:16:10,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:10,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:10,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758096879] [2020-10-12 20:16:10,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:10,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:10,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:10,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:10,432 INFO L87 Difference]: Start difference. First operand 699 states and 1004 transitions. Second operand 5 states. [2020-10-12 20:16:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:12,479 INFO L93 Difference]: Finished difference Result 1959 states and 2813 transitions. [2020-10-12 20:16:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:12,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:16:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:12,491 INFO L225 Difference]: With dead ends: 1959 [2020-10-12 20:16:12,491 INFO L226 Difference]: Without dead ends: 1351 [2020-10-12 20:16:12,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-10-12 20:16:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1328. [2020-10-12 20:16:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-10-12 20:16:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1890 transitions. [2020-10-12 20:16:12,606 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1890 transitions. Word has length 105 [2020-10-12 20:16:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:12,608 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1890 transitions. [2020-10-12 20:16:12,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1890 transitions. [2020-10-12 20:16:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:16:12,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:12,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:12,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:16:12,616 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:12,616 INFO L82 PathProgramCache]: Analyzing trace with hash 567887652, now seen corresponding path program 1 times [2020-10-12 20:16:12,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:12,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849907477] [2020-10-12 20:16:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:12,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:17,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:17,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:16:17,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:16:17,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:16:17,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:17,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 20:16:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:16:17,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:17,926 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:17,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:17,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:17,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:17,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:16:17,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:17,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:17,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849907477] [2020-10-12 20:16:17,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:17,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:17,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561305976] [2020-10-12 20:16:17,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:17,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:17,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:17,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:17,980 INFO L87 Difference]: Start difference. First operand 1328 states and 1890 transitions. Second operand 5 states. [2020-10-12 20:16:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:19,238 INFO L93 Difference]: Finished difference Result 2596 states and 3688 transitions. [2020-10-12 20:16:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:19,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:16:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:19,247 INFO L225 Difference]: With dead ends: 2596 [2020-10-12 20:16:19,247 INFO L226 Difference]: Without dead ends: 1318 [2020-10-12 20:16:19,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2020-10-12 20:16:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1318. [2020-10-12 20:16:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1318 states. [2020-10-12 20:16:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1870 transitions. [2020-10-12 20:16:19,331 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1870 transitions. Word has length 106 [2020-10-12 20:16:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:19,334 INFO L479 AbstractCegarLoop]: Abstraction has 1318 states and 1870 transitions. [2020-10-12 20:16:19,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1870 transitions. [2020-10-12 20:16:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 20:16:19,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:19,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:19,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:16:19,339 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1698806465, now seen corresponding path program 1 times [2020-10-12 20:16:19,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:19,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136296699] [2020-10-12 20:16:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:19,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:23,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:24,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:24,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:16:24,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:16:24,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:16:24,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:16:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:24,607 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:24,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:24,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:24,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:16:24,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:24,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136296699] [2020-10-12 20:16:24,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:24,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:24,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944562776] [2020-10-12 20:16:24,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:24,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:24,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:24,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:24,644 INFO L87 Difference]: Start difference. First operand 1318 states and 1870 transitions. Second operand 5 states. [2020-10-12 20:16:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:25,944 INFO L93 Difference]: Finished difference Result 3351 states and 4745 transitions. [2020-10-12 20:16:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:25,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 20:16:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:25,957 INFO L225 Difference]: With dead ends: 3351 [2020-10-12 20:16:25,957 INFO L226 Difference]: Without dead ends: 2130 [2020-10-12 20:16:25,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:25,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-10-12 20:16:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 2116. [2020-10-12 20:16:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2116 states. [2020-10-12 20:16:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2962 transitions. [2020-10-12 20:16:26,091 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2962 transitions. Word has length 107 [2020-10-12 20:16:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:26,091 INFO L479 AbstractCegarLoop]: Abstraction has 2116 states and 2962 transitions. [2020-10-12 20:16:26,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:26,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2962 transitions. [2020-10-12 20:16:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:16:26,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:26,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:26,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:16:26,096 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1628400170, now seen corresponding path program 1 times [2020-10-12 20:16:26,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:26,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937288527] [2020-10-12 20:16:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:26,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:27,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:28,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:31,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:31,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 20:16:31,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:16:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:16:31,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:16:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:16:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 20:16:31,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:31,393 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:31,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:31,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:31,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:31,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:31,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:16:31,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:16:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:16:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:31,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937288527] [2020-10-12 20:16:31,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:31,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:16:31,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517277003] [2020-10-12 20:16:31,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:16:31,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:31,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:16:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:16:31,468 INFO L87 Difference]: Start difference. First operand 2116 states and 2962 transitions. Second operand 9 states. [2020-10-12 20:16:31,695 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 20:16:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:33,603 INFO L93 Difference]: Finished difference Result 5978 states and 8811 transitions. [2020-10-12 20:16:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:16:33,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-12 20:16:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:33,625 INFO L225 Difference]: With dead ends: 5978 [2020-10-12 20:16:33,625 INFO L226 Difference]: Without dead ends: 4535 [2020-10-12 20:16:33,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:16:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2020-10-12 20:16:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 3040. [2020-10-12 20:16:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3040 states. [2020-10-12 20:16:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 4278 transitions. [2020-10-12 20:16:33,892 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 4278 transitions. Word has length 109 [2020-10-12 20:16:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:33,893 INFO L479 AbstractCegarLoop]: Abstraction has 3040 states and 4278 transitions. [2020-10-12 20:16:33,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:16:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 4278 transitions. [2020-10-12 20:16:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:16:33,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:33,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:33,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:16:33,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:33,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:33,899 INFO L82 PathProgramCache]: Analyzing trace with hash -434290673, now seen corresponding path program 1 times [2020-10-12 20:16:33,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:33,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905068056] [2020-10-12 20:16:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:34,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:34,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:34,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:34,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:37,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:37,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 20:16:37,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:16:37,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4043 [2020-10-12 20:16:37,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:16:37,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:38,229 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:38,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:38,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:38,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:38,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:16:38,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:38,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905068056] [2020-10-12 20:16:38,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:38,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:38,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413857225] [2020-10-12 20:16:38,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:38,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:38,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:38,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:38,277 INFO L87 Difference]: Start difference. First operand 3040 states and 4278 transitions. Second operand 5 states. [2020-10-12 20:16:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:40,513 INFO L93 Difference]: Finished difference Result 7047 states and 10027 transitions. [2020-10-12 20:16:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:40,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:16:40,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:40,535 INFO L225 Difference]: With dead ends: 7047 [2020-10-12 20:16:40,536 INFO L226 Difference]: Without dead ends: 4872 [2020-10-12 20:16:40,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2020-10-12 20:16:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4830. [2020-10-12 20:16:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4830 states. [2020-10-12 20:16:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 6719 transitions. [2020-10-12 20:16:41,003 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 6719 transitions. Word has length 109 [2020-10-12 20:16:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:41,004 INFO L479 AbstractCegarLoop]: Abstraction has 4830 states and 6719 transitions. [2020-10-12 20:16:41,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 6719 transitions. [2020-10-12 20:16:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:16:41,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:41,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:41,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:16:41,028 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:41,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:41,029 INFO L82 PathProgramCache]: Analyzing trace with hash -347246716, now seen corresponding path program 1 times [2020-10-12 20:16:41,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:41,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530304859] [2020-10-12 20:16:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:46,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:46,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:16:46,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:16:46,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:16:46,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:46,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:46,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:46,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 20:16:46,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:46,290 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:46,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:46,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:46,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:16:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:46,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530304859] [2020-10-12 20:16:46,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:46,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:46,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116301760] [2020-10-12 20:16:46,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:46,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:46,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:46,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:46,323 INFO L87 Difference]: Start difference. First operand 4830 states and 6719 transitions. Second operand 5 states. [2020-10-12 20:16:46,567 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 20:16:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:48,731 INFO L93 Difference]: Finished difference Result 8762 states and 12114 transitions. [2020-10-12 20:16:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:16:48,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:16:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:48,749 INFO L225 Difference]: With dead ends: 8762 [2020-10-12 20:16:48,749 INFO L226 Difference]: Without dead ends: 4889 [2020-10-12 20:16:48,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:16:48,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2020-10-12 20:16:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 4826. [2020-10-12 20:16:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4826 states. [2020-10-12 20:16:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6671 transitions. [2020-10-12 20:16:49,121 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6671 transitions. Word has length 110 [2020-10-12 20:16:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:49,121 INFO L479 AbstractCegarLoop]: Abstraction has 4826 states and 6671 transitions. [2020-10-12 20:16:49,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:49,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6671 transitions. [2020-10-12 20:16:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:16:49,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:49,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:49,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:16:49,129 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash 883217055, now seen corresponding path program 1 times [2020-10-12 20:16:49,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:49,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084254674] [2020-10-12 20:16:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:49,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:51,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:51,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:16:51,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:16:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2054 [2020-10-12 20:16:51,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 20:16:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:51,478 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:51,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:51,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:51,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:16:51,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:51,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084254674] [2020-10-12 20:16:51,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:51,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:51,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519745849] [2020-10-12 20:16:51,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:51,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:51,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:51,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:51,519 INFO L87 Difference]: Start difference. First operand 4826 states and 6671 transitions. Second operand 5 states. [2020-10-12 20:16:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:53,939 INFO L93 Difference]: Finished difference Result 13556 states and 18759 transitions. [2020-10-12 20:16:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:53,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:16:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:53,975 INFO L225 Difference]: With dead ends: 13556 [2020-10-12 20:16:53,975 INFO L226 Difference]: Without dead ends: 9291 [2020-10-12 20:16:53,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:53,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9291 states. [2020-10-12 20:16:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9291 to 9273. [2020-10-12 20:16:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9273 states. [2020-10-12 20:16:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9273 states to 9273 states and 12613 transitions. [2020-10-12 20:16:54,633 INFO L78 Accepts]: Start accepts. Automaton has 9273 states and 12613 transitions. Word has length 111 [2020-10-12 20:16:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:54,634 INFO L479 AbstractCegarLoop]: Abstraction has 9273 states and 12613 transitions. [2020-10-12 20:16:54,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:54,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9273 states and 12613 transitions. [2020-10-12 20:16:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:16:54,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:54,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:54,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:16:54,647 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:54,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1522361326, now seen corresponding path program 1 times [2020-10-12 20:16:54,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:54,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210386670] [2020-10-12 20:16:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:54,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:16:57,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:16:57,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2491 [2020-10-12 20:16:57,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 20:16:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:16:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:57,404 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:16:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:57,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:57,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:16:57,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:57,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210386670] [2020-10-12 20:16:57,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:57,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:57,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44238138] [2020-10-12 20:16:57,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:57,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:57,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:57,438 INFO L87 Difference]: Start difference. First operand 9273 states and 12613 transitions. Second operand 5 states. [2020-10-12 20:16:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:58,944 INFO L93 Difference]: Finished difference Result 15777 states and 21456 transitions. [2020-10-12 20:16:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:58,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:16:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:58,959 INFO L225 Difference]: With dead ends: 15777 [2020-10-12 20:16:58,960 INFO L226 Difference]: Without dead ends: 6540 [2020-10-12 20:16:58,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:58,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2020-10-12 20:16:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 6539. [2020-10-12 20:16:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6539 states. [2020-10-12 20:16:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6539 states to 6539 states and 8888 transitions. [2020-10-12 20:16:59,544 INFO L78 Accepts]: Start accepts. Automaton has 6539 states and 8888 transitions. Word has length 112 [2020-10-12 20:16:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:59,545 INFO L479 AbstractCegarLoop]: Abstraction has 6539 states and 8888 transitions. [2020-10-12 20:16:59,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 6539 states and 8888 transitions. [2020-10-12 20:16:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:16:59,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:59,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:59,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:16:59,552 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:59,553 INFO L82 PathProgramCache]: Analyzing trace with hash -287748344, now seen corresponding path program 1 times [2020-10-12 20:16:59,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:59,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355725131] [2020-10-12 20:16:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:02,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:04,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:04,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:17:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:17:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:17:04,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:17:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:17:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 20:17:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:04,870 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:17:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:04,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:04,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:04,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:17:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:17:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:04,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355725131] [2020-10-12 20:17:04,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:04,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:17:04,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246172156] [2020-10-12 20:17:04,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:17:04,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:04,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:17:04,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:17:04,934 INFO L87 Difference]: Start difference. First operand 6539 states and 8888 transitions. Second operand 9 states. [2020-10-12 20:17:05,185 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 20:17:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:08,607 INFO L93 Difference]: Finished difference Result 21507 states and 30393 transitions. [2020-10-12 20:17:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:17:08,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-10-12 20:17:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:08,654 INFO L225 Difference]: With dead ends: 21507 [2020-10-12 20:17:08,654 INFO L226 Difference]: Without dead ends: 17505 [2020-10-12 20:17:08,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:17:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17505 states. [2020-10-12 20:17:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17505 to 12079. [2020-10-12 20:17:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12079 states. [2020-10-12 20:17:09,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12079 states to 12079 states and 16672 transitions. [2020-10-12 20:17:09,835 INFO L78 Accepts]: Start accepts. Automaton has 12079 states and 16672 transitions. Word has length 113 [2020-10-12 20:17:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:09,836 INFO L479 AbstractCegarLoop]: Abstraction has 12079 states and 16672 transitions. [2020-10-12 20:17:09,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:17:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 12079 states and 16672 transitions. [2020-10-12 20:17:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:17:09,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:09,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:09,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:17:09,845 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:09,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1486190792, now seen corresponding path program 1 times [2020-10-12 20:17:09,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:09,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271054142] [2020-10-12 20:17:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:09,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:14,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:14,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:17:14,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:17:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:17:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:17:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:15,208 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:17:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:15,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:15,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:15,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:15,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:17:15,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:15,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:15,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271054142] [2020-10-12 20:17:15,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:15,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:15,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636156412] [2020-10-12 20:17:15,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:15,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:15,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:15,244 INFO L87 Difference]: Start difference. First operand 12079 states and 16672 transitions. Second operand 5 states. [2020-10-12 20:17:15,476 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 20:17:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:18,571 INFO L93 Difference]: Finished difference Result 22291 states and 30816 transitions. [2020-10-12 20:17:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:17:18,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:17:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:18,592 INFO L225 Difference]: With dead ends: 22291 [2020-10-12 20:17:18,593 INFO L226 Difference]: Without dead ends: 12068 [2020-10-12 20:17:18,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:18,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12068 states. [2020-10-12 20:17:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12068 to 12051. [2020-10-12 20:17:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12051 states. [2020-10-12 20:17:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12051 states to 12051 states and 16589 transitions. [2020-10-12 20:17:19,894 INFO L78 Accepts]: Start accepts. Automaton has 12051 states and 16589 transitions. Word has length 113 [2020-10-12 20:17:19,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:19,894 INFO L479 AbstractCegarLoop]: Abstraction has 12051 states and 16589 transitions. [2020-10-12 20:17:19,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 12051 states and 16589 transitions. [2020-10-12 20:17:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:17:19,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:19,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:19,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:17:19,902 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:19,902 INFO L82 PathProgramCache]: Analyzing trace with hash 404167539, now seen corresponding path program 1 times [2020-10-12 20:17:19,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:19,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992966317] [2020-10-12 20:17:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:22,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:22,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:17:22,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:17:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2621 [2020-10-12 20:17:22,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:17:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:17:22,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:17:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:22,826 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:17:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:22,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:22,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:22,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:22,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:17:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:17:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:22,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992966317] [2020-10-12 20:17:22,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:22,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:17:22,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564558549] [2020-10-12 20:17:22,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:17:22,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:17:22,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:17:22,874 INFO L87 Difference]: Start difference. First operand 12051 states and 16589 transitions. Second operand 9 states. [2020-10-12 20:17:23,128 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 20:17:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:28,516 INFO L93 Difference]: Finished difference Result 44388 states and 62567 transitions. [2020-10-12 20:17:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:17:28,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 114 [2020-10-12 20:17:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:28,557 INFO L225 Difference]: With dead ends: 44388 [2020-10-12 20:17:28,558 INFO L226 Difference]: Without dead ends: 33599 [2020-10-12 20:17:28,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:17:28,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33599 states. [2020-10-12 20:17:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33599 to 18979. [2020-10-12 20:17:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18979 states. [2020-10-12 20:17:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18979 states to 18979 states and 25851 transitions. [2020-10-12 20:17:30,362 INFO L78 Accepts]: Start accepts. Automaton has 18979 states and 25851 transitions. Word has length 114 [2020-10-12 20:17:30,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:30,362 INFO L479 AbstractCegarLoop]: Abstraction has 18979 states and 25851 transitions. [2020-10-12 20:17:30,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:17:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 18979 states and 25851 transitions. [2020-10-12 20:17:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:17:30,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:30,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:30,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:17:30,371 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:30,371 INFO L82 PathProgramCache]: Analyzing trace with hash 766424134, now seen corresponding path program 1 times [2020-10-12 20:17:30,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:30,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150796726] [2020-10-12 20:17:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:31,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:17:31,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:17:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-12 20:17:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 20:17:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:17:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:31,675 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:17:31,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:31,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:31,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:31,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:17:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:31,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150796726] [2020-10-12 20:17:31,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:31,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:17:31,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125422464] [2020-10-12 20:17:31,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:17:31,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:31,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:17:31,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:17:31,702 INFO L87 Difference]: Start difference. First operand 18979 states and 25851 transitions. Second operand 4 states. [2020-10-12 20:17:35,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:35,612 INFO L93 Difference]: Finished difference Result 40447 states and 56641 transitions. [2020-10-12 20:17:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:17:35,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-12 20:17:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:35,641 INFO L225 Difference]: With dead ends: 40447 [2020-10-12 20:17:35,641 INFO L226 Difference]: Without dead ends: 23757 [2020-10-12 20:17:35,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:17:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23757 states. [2020-10-12 20:17:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23757 to 22789. [2020-10-12 20:17:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22789 states. [2020-10-12 20:17:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22789 states to 22789 states and 31750 transitions. [2020-10-12 20:17:38,056 INFO L78 Accepts]: Start accepts. Automaton has 22789 states and 31750 transitions. Word has length 114 [2020-10-12 20:17:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:38,056 INFO L479 AbstractCegarLoop]: Abstraction has 22789 states and 31750 transitions. [2020-10-12 20:17:38,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:17:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 22789 states and 31750 transitions. [2020-10-12 20:17:38,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:17:38,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:38,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:38,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:17:38,062 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:38,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:38,063 INFO L82 PathProgramCache]: Analyzing trace with hash -995229163, now seen corresponding path program 1 times [2020-10-12 20:17:38,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:38,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192037138] [2020-10-12 20:17:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:38,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:38,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:38,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:17:38,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:17:38,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-12 20:17:38,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:17:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 20:17:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:38,812 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:17:38,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:38,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:38,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:17:38,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:38,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192037138] [2020-10-12 20:17:38,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:38,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:17:38,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654224410] [2020-10-12 20:17:38,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:17:38,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:38,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:17:38,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:17:38,841 INFO L87 Difference]: Start difference. First operand 22789 states and 31750 transitions. Second operand 4 states. [2020-10-12 20:17:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:43,337 INFO L93 Difference]: Finished difference Result 43005 states and 61271 transitions. [2020-10-12 20:17:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:17:43,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-12 20:17:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:43,364 INFO L225 Difference]: With dead ends: 43005 [2020-10-12 20:17:43,364 INFO L226 Difference]: Without dead ends: 22358 [2020-10-12 20:17:43,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:17:43,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22358 states. [2020-10-12 20:17:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22358 to 21988. [2020-10-12 20:17:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21988 states. [2020-10-12 20:17:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21988 states to 21988 states and 31213 transitions. [2020-10-12 20:17:45,572 INFO L78 Accepts]: Start accepts. Automaton has 21988 states and 31213 transitions. Word has length 117 [2020-10-12 20:17:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:45,572 INFO L479 AbstractCegarLoop]: Abstraction has 21988 states and 31213 transitions. [2020-10-12 20:17:45,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:17:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 21988 states and 31213 transitions. [2020-10-12 20:17:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:17:45,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:45,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:45,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:17:45,576 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1750716671, now seen corresponding path program 1 times [2020-10-12 20:17:45,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:45,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511530040] [2020-10-12 20:17:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:45,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:17:45,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:17:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 20:17:45,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 20:17:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:17:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:45,965 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 20:17:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:45,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:45,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:17:45,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:45,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511530040] [2020-10-12 20:17:45,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:45,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:17:45,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288435527] [2020-10-12 20:17:45,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:17:45,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:45,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:17:45,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:17:45,992 INFO L87 Difference]: Start difference. First operand 21988 states and 31213 transitions. Second operand 4 states. [2020-10-12 20:17:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:51,746 INFO L93 Difference]: Finished difference Result 60279 states and 86832 transitions. [2020-10-12 20:17:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:17:51,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-12 20:17:51,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:51,793 INFO L225 Difference]: With dead ends: 60279 [2020-10-12 20:17:51,793 INFO L226 Difference]: Without dead ends: 39774 [2020-10-12 20:17:51,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:17:51,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39774 states. [2020-10-12 20:17:55,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39774 to 36744. [2020-10-12 20:17:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36744 states. [2020-10-12 20:17:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36744 states to 36744 states and 52932 transitions. [2020-10-12 20:17:55,725 INFO L78 Accepts]: Start accepts. Automaton has 36744 states and 52932 transitions. Word has length 120 [2020-10-12 20:17:55,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:55,725 INFO L479 AbstractCegarLoop]: Abstraction has 36744 states and 52932 transitions. [2020-10-12 20:17:55,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:17:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 36744 states and 52932 transitions. [2020-10-12 20:17:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:17:55,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:55,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:55,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:17:55,728 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:55,729 INFO L82 PathProgramCache]: Analyzing trace with hash -293154203, now seen corresponding path program 1 times [2020-10-12 20:17:55,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:55,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80181105] [2020-10-12 20:17:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 20:17:55,771 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 20:17:55,771 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 20:17:55,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:17:55,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:17:55 BoogieIcfgContainer [2020-10-12 20:17:55,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 20:17:55,826 INFO L168 Benchmark]: Toolchain (without parser) took 136019.98 ms. Allocated memory was 147.8 MB in the beginning and 2.6 GB in the end (delta: 2.5 GB). Free memory was 102.3 MB in the beginning and 642.0 MB in the end (delta: -539.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-10-12 20:17:55,826 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 20:17:55,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.15 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.1 MB in the beginning and 168.1 MB in the end (delta: -66.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-12 20:17:55,828 INFO L168 Benchmark]: Boogie Preprocessor took 88.81 ms. Allocated memory is still 204.5 MB. Free memory was 168.1 MB in the beginning and 164.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-12 20:17:55,828 INFO L168 Benchmark]: RCFGBuilder took 1279.28 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 164.1 MB in the beginning and 171.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2020-10-12 20:17:55,830 INFO L168 Benchmark]: TraceAbstraction took 133903.70 ms. Allocated memory was 235.9 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 169.7 MB in the beginning and 642.0 MB in the end (delta: -472.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-10-12 20:17:55,835 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 743.15 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.1 MB in the beginning and 168.1 MB in the end (delta: -66.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.81 ms. Allocated memory is still 204.5 MB. Free memory was 168.1 MB in the beginning and 164.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1279.28 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 164.1 MB in the beginning and 171.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 133903.70 ms. Allocated memory was 235.9 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 169.7 MB in the beginning and 642.0 MB in the end (delta: -472.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 572]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] _Bool newmax1 = 0; [L48] char id2 = '\x0'; [L49] unsigned char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] _Bool newmax2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L63] _Bool newmax3 = 0; [L67] void (*nodes[3])() = { &node1, &node2, &node3 }; [L71] int __return_1248; [L72] int __return_1394; [L73] int __return_1872; [L74] int __return_1528; [L75] int __return_1653; [L78] int main__c1; [L79] int main__i2; [L80] main__c1 = 0 [L81] ep12 = __VERIFIER_nondet_bool() [L82] ep13 = __VERIFIER_nondet_bool() [L83] ep21 = __VERIFIER_nondet_bool() [L84] ep23 = __VERIFIER_nondet_bool() [L85] ep31 = __VERIFIER_nondet_bool() [L86] ep32 = __VERIFIER_nondet_bool() [L87] id1 = __VERIFIER_nondet_char() [L88] r1 = __VERIFIER_nondet_uchar() [L89] st1 = __VERIFIER_nondet_char() [L90] nl1 = __VERIFIER_nondet_char() [L91] m1 = __VERIFIER_nondet_char() [L92] max1 = __VERIFIER_nondet_char() [L93] mode1 = __VERIFIER_nondet_bool() [L94] newmax1 = __VERIFIER_nondet_bool() [L95] id2 = __VERIFIER_nondet_char() [L96] r2 = __VERIFIER_nondet_uchar() [L97] st2 = __VERIFIER_nondet_char() [L98] nl2 = __VERIFIER_nondet_char() [L99] m2 = __VERIFIER_nondet_char() [L100] max2 = __VERIFIER_nondet_char() [L101] mode2 = __VERIFIER_nondet_bool() [L102] newmax2 = __VERIFIER_nondet_bool() [L103] id3 = __VERIFIER_nondet_char() [L104] r3 = __VERIFIER_nondet_uchar() [L105] st3 = __VERIFIER_nondet_char() [L106] nl3 = __VERIFIER_nondet_char() [L107] m3 = __VERIFIER_nondet_char() [L108] max3 = __VERIFIER_nondet_char() [L109] mode3 = __VERIFIER_nondet_bool() [L110] newmax3 = __VERIFIER_nondet_bool() [L112] _Bool init__r121; [L113] _Bool init__r131; [L114] _Bool init__r211; [L115] _Bool init__r231; [L116] _Bool init__r311; [L117] _Bool init__r321; [L118] _Bool init__r122; [L119] int init__tmp; [L120] _Bool init__r132; [L121] int init__tmp___0; [L122] _Bool init__r212; [L123] int init__tmp___1; [L124] _Bool init__r232; [L125] int init__tmp___2; [L126] _Bool init__r312; [L127] int init__tmp___3; [L128] _Bool init__r322; [L129] int init__tmp___4; [L130] int init__tmp___5; [L131] init__r121 = ep12 [L132] init__r131 = ep13 [L133] init__r211 = ep21 [L134] init__r231 = ep23 [L135] init__r311 = ep31 [L136] init__r321 = ep32 [L137] COND TRUE !(init__r121 == 0) [L139] init__tmp = 1 [L141] init__r122 = (_Bool)init__tmp [L142] COND FALSE !(!(init__r131 == 0)) [L1967] COND TRUE !(init__r121 == 0) [L1969] COND TRUE !(ep23 == 0) [L1971] init__tmp___0 = 1 [L146] init__r132 = (_Bool)init__tmp___0 [L147] COND FALSE !(!(init__r211 == 0)) [L1944] COND TRUE !(init__r231 == 0) [L1946] COND TRUE !(ep31 == 0) [L1948] init__tmp___1 = 1 [L151] init__r212 = (_Bool)init__tmp___1 [L152] COND TRUE !(init__r231 == 0) [L154] init__tmp___2 = 1 [L156] init__r232 = (_Bool)init__tmp___2 [L157] COND TRUE !(init__r311 == 0) [L159] init__tmp___3 = 1 [L161] init__r312 = (_Bool)init__tmp___3 [L162] COND FALSE !(!(init__r321 == 0)) [L1875] COND TRUE !(init__r311 == 0) [L1877] COND TRUE !(ep12 == 0) [L1879] init__tmp___4 = 1 [L166] init__r322 = (_Bool)init__tmp___4 [L167] COND TRUE ((int)id1) != ((int)id2) [L169] COND TRUE ((int)id1) != ((int)id3) [L171] COND TRUE ((int)id2) != ((int)id3) [L173] COND TRUE ((int)id1) >= 0 [L175] COND TRUE ((int)id2) >= 0 [L177] COND TRUE ((int)id3) >= 0 [L179] COND TRUE ((int)r1) == 0 [L181] COND TRUE ((int)r2) == 0 [L183] COND TRUE ((int)r3) == 0 [L185] COND TRUE !(init__r122 == 0) [L187] COND TRUE !(init__r132 == 0) [L189] COND TRUE !(init__r212 == 0) [L191] COND TRUE !(init__r232 == 0) [L193] COND TRUE !(init__r312 == 0) [L195] COND TRUE !(init__r322 == 0) [L197] COND TRUE ((int)max1) == ((int)id1) [L199] COND TRUE ((int)max2) == ((int)id2) [L201] COND TRUE ((int)max3) == ((int)id3) [L203] COND TRUE ((int)st1) == 0 [L205] COND TRUE ((int)st2) == 0 [L207] COND TRUE ((int)st3) == 0 [L209] COND TRUE ((int)nl1) == 0 [L211] COND TRUE ((int)nl2) == 0 [L213] COND TRUE ((int)nl3) == 0 [L215] COND TRUE ((int)mode1) == 0 [L217] COND TRUE ((int)mode2) == 0 [L219] COND TRUE ((int)mode3) == 0 [L221] COND TRUE !(newmax1 == 0) [L223] COND TRUE !(newmax2 == 0) [L225] COND TRUE !(newmax3 == 0) [L227] init__tmp___5 = 1 [L228] __return_1248 = init__tmp___5 [L229] main__i2 = __return_1248 [L230] COND TRUE main__i2 != 0 [L232] p12_old = nomsg [L233] p12_new = nomsg [L234] p13_old = nomsg [L235] p13_new = nomsg [L236] p21_old = nomsg [L237] p21_new = nomsg [L238] p23_old = nomsg [L239] p23_new = nomsg [L240] p31_old = nomsg [L241] p31_new = nomsg [L242] p32_old = nomsg [L243] p32_new = nomsg [L244] main__i2 = 0 [L246] _Bool node1__newmax; [L247] node1__newmax = 0 [L248] COND FALSE !(!(mode1 == 0)) [L254] COND TRUE ((int)r1) < 2 [L256] COND TRUE !(ep12 == 0) [L258] COND TRUE !(newmax1 == 0) [L260] int node1____CPAchecker_TMP_0; [L261] COND TRUE max1 != nomsg [L263] COND TRUE p12_new == nomsg [L265] node1____CPAchecker_TMP_0 = max1 [L267] p12_new = node1____CPAchecker_TMP_0 [L269] COND FALSE !(!(ep13 == 0)) [L282] mode1 = 1 [L284] _Bool node2__newmax; [L285] node2__newmax = 0 [L286] COND FALSE !(!(mode2 == 0)) [L292] COND TRUE ((int)r2) < 2 [L294] COND FALSE !(!(ep21 == 0)) [L307] COND TRUE !(ep23 == 0) [L309] COND TRUE !(newmax2 == 0) [L311] int node2____CPAchecker_TMP_1; [L312] COND TRUE max2 != nomsg [L314] COND TRUE p23_new == nomsg [L316] node2____CPAchecker_TMP_1 = max2 [L318] p23_new = node2____CPAchecker_TMP_1 [L320] mode2 = 1 [L322] _Bool node3__newmax; [L323] node3__newmax = 0 [L324] COND FALSE !(!(mode3 == 0)) [L330] COND TRUE ((int)r3) < 2 [L332] COND TRUE !(ep31 == 0) [L334] COND TRUE !(newmax3 == 0) [L336] int node3____CPAchecker_TMP_0; [L337] COND TRUE max3 != nomsg [L339] COND TRUE p31_new == nomsg [L341] node3____CPAchecker_TMP_0 = max3 [L343] p31_new = node3____CPAchecker_TMP_0 [L345] COND FALSE !(!(ep32 == 0)) [L358] mode3 = 1 [L359] p12_old = p12_new [L360] p12_new = nomsg [L361] p13_old = p13_new [L362] p13_new = nomsg [L363] p21_old = p21_new [L364] p21_new = nomsg [L365] p23_old = p23_new [L366] p23_new = nomsg [L367] p31_old = p31_new [L368] p31_new = nomsg [L369] p32_old = p32_new [L370] p32_new = nomsg [L372] int check__tmp; [L373] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L375] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L377] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L379] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L381] COND FALSE !(((int)r1) >= 2) [L387] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L389] COND TRUE ((int)r1) < 2 [L391] COND FALSE !(((int)r1) >= 2) [L397] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L399] COND TRUE ((int)r1) < 2 [L401] check__tmp = 1 [L402] __return_1394 = check__tmp [L403] main__c1 = __return_1394 [L405] _Bool __tmp_1; [L406] __tmp_1 = main__c1 [L407] _Bool assert__arg; [L408] assert__arg = __tmp_1 [L409] COND FALSE !(assert__arg == 0) [L416] _Bool node1__newmax; [L417] node1__newmax = 0 [L418] COND TRUE !(mode1 == 0) [L420] COND FALSE !(r1 == 255) [L426] r1 = r1 + 1 [L427] COND FALSE !(!(ep21 == 0)) [L436] COND TRUE !(ep31 == 0) [L438] m1 = p31_old [L439] p31_old = nomsg [L440] COND FALSE !(((int)m1) > ((int)max1)) [L445] newmax1 = node1__newmax [L446] COND TRUE ((int)r1) == 1 [L448] COND TRUE ((int)max1) == ((int)id1) [L450] st1 = 1 [L451] mode1 = 0 [L453] _Bool node2__newmax; [L454] node2__newmax = 0 [L455] COND TRUE !(mode2 == 0) [L457] COND FALSE !(r2 == 255) [L463] r2 = r2 + 1 [L464] COND TRUE !(ep12 == 0) [L466] m2 = p12_old [L467] p12_old = nomsg [L468] COND TRUE ((int)m2) > ((int)max2) [L470] max2 = m2 [L471] node2__newmax = 1 [L473] COND FALSE !(!(ep32 == 0)) [L482] newmax2 = node2__newmax [L483] COND FALSE !(((int)r2) == 2) [L489] mode2 = 0 [L491] _Bool node3__newmax; [L492] node3__newmax = 0 [L493] COND TRUE !(mode3 == 0) [L495] COND FALSE !(r3 == 255) [L501] r3 = r3 + 1 [L502] COND FALSE !(!(ep13 == 0)) [L511] COND TRUE !(ep23 == 0) [L513] m3 = p23_old [L514] p23_old = nomsg [L515] COND TRUE ((int)m3) > ((int)max3) [L517] max3 = m3 [L518] node3__newmax = 1 [L520] newmax3 = node3__newmax [L521] COND FALSE !(((int)r3) == 2) [L527] mode3 = 0 [L528] p12_old = p12_new [L529] p12_new = nomsg [L530] p13_old = p13_new [L531] p13_new = nomsg [L532] p21_old = p21_new [L533] p21_new = nomsg [L534] p23_old = p23_new [L535] p23_new = nomsg [L536] p31_old = p31_new [L537] p31_new = nomsg [L538] p32_old = p32_new [L539] p32_new = nomsg [L541] int check__tmp; [L542] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L544] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L546] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L548] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L550] COND FALSE !(((int)r1) >= 2) [L556] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L562] check__tmp = 0 [L563] __return_1872 = check__tmp [L564] main__c1 = __return_1872 [L566] _Bool __tmp_2; [L567] __tmp_2 = main__c1 [L568] _Bool assert__arg; [L569] assert__arg = __tmp_2 [L570] COND TRUE assert__arg == 0 [L572] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 279 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 133.7s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 48.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8778 SDtfs, 18284 SDslu, 8590 SDs, 0 SdLazy, 10350 SolverSat, 579 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36744occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 26145 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 68.2s InterpolantComputationTime, 1992 NumberOfCodeBlocks, 1992 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1852 ConstructedInterpolants, 0 QuantifiedInterpolants, 1299271 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...