/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=NARROWEST --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_floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:02:40,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:02:40,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:02:40,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:02:40,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:02:40,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:02:40,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:02:40,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:02:40,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:02:40,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:02:40,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:02:40,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:02:40,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:02:40,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:02:40,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:02:40,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:02:40,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:02:40,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:02:40,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:02:40,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:02:40,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:02:40,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:02:40,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:02:40,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:02:40,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:02:40,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:02:40,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:02:40,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:02:40,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:02:40,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:02:40,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:02:40,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:02:40,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:02:40,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:02:40,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:02:40,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:02:40,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:02:40,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:02:40,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:02:40,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:02:40,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:02:40,670 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 [2020-10-13 14:02:40,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:02:40,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:02:40,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:02:40,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:02:40,719 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:02:40,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:02:40,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:02:40,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:02:40,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:02:40,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:02:40,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:02:40,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:02:40,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:02:40,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:02:40,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:02:40,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:02:40,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:02:40,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:02:40,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:02:40,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:02:40,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:02:40,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:02:40,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:02:40,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:02:40,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:02:40,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:02:40,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:02:40,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:02:40,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:02:40,725 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:02:41,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:02:41,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:02:41,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:02:41,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:02:41,065 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:02:41,066 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:02:41,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ceab1fbb/e48a5db08c8a4c03b1066978b59a639d/FLAGe87e3e826 [2020-10-13 14:02:41,747 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:02:41,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:02:41,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ceab1fbb/e48a5db08c8a4c03b1066978b59a639d/FLAGe87e3e826 [2020-10-13 14:02:41,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ceab1fbb/e48a5db08c8a4c03b1066978b59a639d [2020-10-13 14:02:41,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:02:41,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:02:41,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:41,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:02:41,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:02:41,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:41" (1/1) ... [2020-10-13 14:02:41,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13af5d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:41, skipping insertion in model container [2020-10-13 14:02:41,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:41" (1/1) ... [2020-10-13 14:02:41,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:02:42,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:02:43,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:43,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:02:44,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:44,377 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:02:44,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44 WrapperNode [2020-10-13 14:02:44,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:44,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:02:44,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:02:44,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:02:44,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (1/1) ... [2020-10-13 14:02:44,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (1/1) ... [2020-10-13 14:02:44,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (1/1) ... [2020-10-13 14:02:44,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (1/1) ... [2020-10-13 14:02:44,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (1/1) ... [2020-10-13 14:02:44,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (1/1) ... [2020-10-13 14:02:44,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (1/1) ... [2020-10-13 14:02:44,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:02:44,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:02:44,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:02:44,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:02:44,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (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 [2020-10-13 14:02:44,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:02:44,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:02:44,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:02:44,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:02:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:02:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:02:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:02:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:02:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:02:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:02:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:02:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:02:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:02:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:02:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:02:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:02:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:02:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:02:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:02:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:02:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:02:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:02:47,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:02:47,409 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:02:47,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:47 BoogieIcfgContainer [2020-10-13 14:02:47,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:02:47,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:02:47,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:02:47,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:02:47,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:02:41" (1/3) ... [2020-10-13 14:02:47,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2728d207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:47, skipping insertion in model container [2020-10-13 14:02:47,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:44" (2/3) ... [2020-10-13 14:02:47,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2728d207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:47, skipping insertion in model container [2020-10-13 14:02:47,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:47" (3/3) ... [2020-10-13 14:02:47,428 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:02:47,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:02:47,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-13 14:02:47,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-13 14:02:47,490 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:02:47,491 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:02:47,491 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:02:47,491 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:02:47,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:02:47,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:02:47,491 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:02:47,491 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:02:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states. [2020-10-13 14:02:47,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 14:02:47,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:47,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:47,569 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:47,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1131468456, now seen corresponding path program 1 times [2020-10-13 14:02:47,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:47,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676543438] [2020-10-13 14:02:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:52,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 14:02:53,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:02:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:02:53,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:53,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:53,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:02:53,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 14:02:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:02:54,304 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:02:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:54,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:54,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:54,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 14:02:54,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:54,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676543438] [2020-10-13 14:02:54,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:54,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:54,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978463984] [2020-10-13 14:02:54,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:54,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:54,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:54,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:54,674 INFO L87 Difference]: Start difference. First operand 934 states. Second operand 5 states. [2020-10-13 14:03:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:05,573 INFO L93 Difference]: Finished difference Result 2753 states and 4969 transitions. [2020-10-13 14:03:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:03:05,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-13 14:03:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:05,610 INFO L225 Difference]: With dead ends: 2753 [2020-10-13 14:03:05,610 INFO L226 Difference]: Without dead ends: 1826 [2020-10-13 14:03:05,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2020-10-13 14:03:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1730. [2020-10-13 14:03:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1730 states. [2020-10-13 14:03:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2630 transitions. [2020-10-13 14:03:05,780 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2630 transitions. Word has length 308 [2020-10-13 14:03:05,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:05,781 INFO L479 AbstractCegarLoop]: Abstraction has 1730 states and 2630 transitions. [2020-10-13 14:03:05,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2630 transitions. [2020-10-13 14:03:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 14:03:05,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:05,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:05,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:03:05,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:05,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1402429002, now seen corresponding path program 1 times [2020-10-13 14:03:05,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:05,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123837495] [2020-10-13 14:03:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:06,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:10,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:10,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 14:03:10,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:03:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:03:10,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:03:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 14:03:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:11,805 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:03:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:11,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:11,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:03:11,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:11,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:12,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123837495] [2020-10-13 14:03:12,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:12,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:12,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143659666] [2020-10-13 14:03:12,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:12,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:12,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:12,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:12,230 INFO L87 Difference]: Start difference. First operand 1730 states and 2630 transitions. Second operand 5 states. [2020-10-13 14:03:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:21,897 INFO L93 Difference]: Finished difference Result 5109 states and 7761 transitions. [2020-10-13 14:03:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:21,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-13 14:03:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:21,918 INFO L225 Difference]: With dead ends: 5109 [2020-10-13 14:03:21,918 INFO L226 Difference]: Without dead ends: 3395 [2020-10-13 14:03:21,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2020-10-13 14:03:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3303. [2020-10-13 14:03:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3303 states. [2020-10-13 14:03:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 5009 transitions. [2020-10-13 14:03:22,077 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 5009 transitions. Word has length 310 [2020-10-13 14:03:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:22,079 INFO L479 AbstractCegarLoop]: Abstraction has 3303 states and 5009 transitions. [2020-10-13 14:03:22,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 5009 transitions. [2020-10-13 14:03:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 14:03:22,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:22,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:22,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:03:22,094 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1424292611, now seen corresponding path program 1 times [2020-10-13 14:03:22,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:22,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199516598] [2020-10-13 14:03:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:22,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:27,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 14:03:27,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 14:03:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:03:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 14:03:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:27,966 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:03:27,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:27,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:27,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:27,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:03:27,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:27,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:27,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:28,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199516598] [2020-10-13 14:03:28,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:28,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:28,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140506843] [2020-10-13 14:03:28,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:28,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:28,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:28,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:28,234 INFO L87 Difference]: Start difference. First operand 3303 states and 5009 transitions. Second operand 4 states. [2020-10-13 14:03:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:38,158 INFO L93 Difference]: Finished difference Result 9844 states and 14926 transitions. [2020-10-13 14:03:38,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:38,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 312 [2020-10-13 14:03:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:38,194 INFO L225 Difference]: With dead ends: 9844 [2020-10-13 14:03:38,194 INFO L226 Difference]: Without dead ends: 6574 [2020-10-13 14:03:38,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6574 states. [2020-10-13 14:03:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6574 to 3317. [2020-10-13 14:03:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3317 states. [2020-10-13 14:03:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 5026 transitions. [2020-10-13 14:03:38,439 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 5026 transitions. Word has length 312 [2020-10-13 14:03:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:38,439 INFO L479 AbstractCegarLoop]: Abstraction has 3317 states and 5026 transitions. [2020-10-13 14:03:38,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 5026 transitions. [2020-10-13 14:03:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 14:03:38,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:38,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:38,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:03:38,459 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:38,464 INFO L82 PathProgramCache]: Analyzing trace with hash -110003818, now seen corresponding path program 1 times [2020-10-13 14:03:38,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:38,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749640112] [2020-10-13 14:03:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:41,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:41,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:43,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:43,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 14:03:43,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:03:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:03:43,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:03:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:03:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:44,276 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:03:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:44,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:03:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:03:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:44,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749640112] [2020-10-13 14:03:44,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:44,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:44,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906742563] [2020-10-13 14:03:44,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:44,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:44,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:44,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:44,461 INFO L87 Difference]: Start difference. First operand 3317 states and 5026 transitions. Second operand 5 states. [2020-10-13 14:03:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:54,118 INFO L93 Difference]: Finished difference Result 9608 states and 14495 transitions. [2020-10-13 14:03:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:54,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 14:03:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:54,146 INFO L225 Difference]: With dead ends: 9608 [2020-10-13 14:03:54,147 INFO L226 Difference]: Without dead ends: 6579 [2020-10-13 14:03:54,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2020-10-13 14:03:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 3610. [2020-10-13 14:03:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3610 states. [2020-10-13 14:03:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5539 transitions. [2020-10-13 14:03:54,372 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5539 transitions. Word has length 314 [2020-10-13 14:03:54,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:54,373 INFO L479 AbstractCegarLoop]: Abstraction has 3610 states and 5539 transitions. [2020-10-13 14:03:54,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:54,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5539 transitions. [2020-10-13 14:03:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 14:03:54,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:54,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:54,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:03:54,389 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:54,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2045369721, now seen corresponding path program 1 times [2020-10-13 14:03:54,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:54,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627350811] [2020-10-13 14:03:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:54,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:56,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:59,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:59,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 14:03:59,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:03:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 14:03:59,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:03:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 14:03:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:00,120 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:04:00,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:00,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:00,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:00,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:04:00,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:00,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627350811] [2020-10-13 14:04:00,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:00,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:04:00,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144399069] [2020-10-13 14:04:00,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:04:00,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:00,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:04:00,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:00,261 INFO L87 Difference]: Start difference. First operand 3610 states and 5539 transitions. Second operand 5 states. [2020-10-13 14:04:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:09,201 INFO L93 Difference]: Finished difference Result 10520 states and 16105 transitions. [2020-10-13 14:04:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:09,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 14:04:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:09,232 INFO L225 Difference]: With dead ends: 10520 [2020-10-13 14:04:09,232 INFO L226 Difference]: Without dead ends: 6961 [2020-10-13 14:04:09,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2020-10-13 14:04:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 6891. [2020-10-13 14:04:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6891 states. [2020-10-13 14:04:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6891 states to 6891 states and 10484 transitions. [2020-10-13 14:04:09,628 INFO L78 Accepts]: Start accepts. Automaton has 6891 states and 10484 transitions. Word has length 314 [2020-10-13 14:04:09,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:09,630 INFO L479 AbstractCegarLoop]: Abstraction has 6891 states and 10484 transitions. [2020-10-13 14:04:09,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6891 states and 10484 transitions. [2020-10-13 14:04:09,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 14:04:09,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:09,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:09,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:04:09,648 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:09,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1701563199, now seen corresponding path program 1 times [2020-10-13 14:04:09,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:09,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087216526] [2020-10-13 14:04:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:09,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:14,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 14:04:14,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:04:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 14:04:14,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:04:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:04:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:04:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:15,371 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:04:15,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:15,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:15,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:15,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:04:15,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:15,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087216526] [2020-10-13 14:04:15,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:15,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:04:15,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303324415] [2020-10-13 14:04:15,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:04:15,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:15,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:04:15,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:15,488 INFO L87 Difference]: Start difference. First operand 6891 states and 10484 transitions. Second operand 5 states. [2020-10-13 14:04:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:22,654 INFO L93 Difference]: Finished difference Result 18704 states and 28197 transitions. [2020-10-13 14:04:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:22,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-13 14:04:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:22,684 INFO L225 Difference]: With dead ends: 18704 [2020-10-13 14:04:22,684 INFO L226 Difference]: Without dead ends: 12758 [2020-10-13 14:04:22,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12758 states. [2020-10-13 14:04:23,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12758 to 7614. [2020-10-13 14:04:23,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7614 states. [2020-10-13 14:04:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7614 states to 7614 states and 11704 transitions. [2020-10-13 14:04:23,192 INFO L78 Accepts]: Start accepts. Automaton has 7614 states and 11704 transitions. Word has length 316 [2020-10-13 14:04:23,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:23,192 INFO L479 AbstractCegarLoop]: Abstraction has 7614 states and 11704 transitions. [2020-10-13 14:04:23,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7614 states and 11704 transitions. [2020-10-13 14:04:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 14:04:23,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:23,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:23,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:04:23,213 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1528808633, now seen corresponding path program 1 times [2020-10-13 14:04:23,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:23,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569712273] [2020-10-13 14:04:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:26,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:28,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:28,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 14:04:28,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:04:28,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 14:04:28,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:28,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:04:28,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:04:28,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:04:28,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:28,951 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:04:28,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:28,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:28,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:28,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:04:28,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:29,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569712273] [2020-10-13 14:04:29,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:29,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:04:29,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672044555] [2020-10-13 14:04:29,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:04:29,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:29,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:04:29,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:29,047 INFO L87 Difference]: Start difference. First operand 7614 states and 11704 transitions. Second operand 5 states. [2020-10-13 14:04:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:37,267 INFO L93 Difference]: Finished difference Result 20193 states and 30672 transitions. [2020-10-13 14:04:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:37,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-13 14:04:37,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:37,300 INFO L225 Difference]: With dead ends: 20193 [2020-10-13 14:04:37,301 INFO L226 Difference]: Without dead ends: 14159 [2020-10-13 14:04:37,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14159 states. [2020-10-13 14:04:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14159 to 9040. [2020-10-13 14:04:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9040 states. [2020-10-13 14:04:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9040 states to 9040 states and 14086 transitions. [2020-10-13 14:04:37,950 INFO L78 Accepts]: Start accepts. Automaton has 9040 states and 14086 transitions. Word has length 318 [2020-10-13 14:04:37,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:37,950 INFO L479 AbstractCegarLoop]: Abstraction has 9040 states and 14086 transitions. [2020-10-13 14:04:37,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 9040 states and 14086 transitions. [2020-10-13 14:04:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 14:04:37,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:37,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:37,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:04:37,968 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:37,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1313340324, now seen corresponding path program 1 times [2020-10-13 14:04:37,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:37,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102700216] [2020-10-13 14:04:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:43,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:43,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 14:04:43,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:04:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 14:04:43,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:04:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:04:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:04:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:43,692 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:04:43,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:43,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:43,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:43,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:43,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:04:43,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:43,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102700216] [2020-10-13 14:04:43,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:43,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:04:43,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129119807] [2020-10-13 14:04:43,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:04:43,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:43,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:04:43,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:43,801 INFO L87 Difference]: Start difference. First operand 9040 states and 14086 transitions. Second operand 5 states. [2020-10-13 14:04:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:49,464 INFO L93 Difference]: Finished difference Result 14139 states and 21612 transitions. [2020-10-13 14:04:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:49,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-13 14:04:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:49,481 INFO L225 Difference]: With dead ends: 14139 [2020-10-13 14:04:49,481 INFO L226 Difference]: Without dead ends: 7911 [2020-10-13 14:04:49,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7911 states. [2020-10-13 14:04:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7911 to 7911. [2020-10-13 14:04:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7911 states. [2020-10-13 14:04:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 12299 transitions. [2020-10-13 14:04:49,925 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 12299 transitions. Word has length 320 [2020-10-13 14:04:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:49,925 INFO L479 AbstractCegarLoop]: Abstraction has 7911 states and 12299 transitions. [2020-10-13 14:04:49,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 12299 transitions. [2020-10-13 14:04:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 14:04:49,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:49,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:49,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:04:49,941 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:49,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1929490917, now seen corresponding path program 1 times [2020-10-13 14:04:49,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:49,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728647111] [2020-10-13 14:04:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:55,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 14:04:55,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:04:55,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 14:04:55,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 14:04:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 14:04:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:55,668 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:04:55,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:55,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:55,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:04:55,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:55,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:55,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728647111] [2020-10-13 14:04:55,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:55,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:55,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282443908] [2020-10-13 14:04:55,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:55,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:55,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:55,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:55,758 INFO L87 Difference]: Start difference. First operand 7911 states and 12299 transitions. Second operand 4 states. [2020-10-13 14:04:56,296 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-13 14:05:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:02,753 INFO L93 Difference]: Finished difference Result 16231 states and 24649 transitions. [2020-10-13 14:05:02,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:02,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-10-13 14:05:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:02,773 INFO L225 Difference]: With dead ends: 16231 [2020-10-13 14:05:02,774 INFO L226 Difference]: Without dead ends: 12244 [2020-10-13 14:05:02,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12244 states. [2020-10-13 14:05:03,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12244 to 12120. [2020-10-13 14:05:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12120 states. [2020-10-13 14:05:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12120 states to 12120 states and 18514 transitions. [2020-10-13 14:05:03,493 INFO L78 Accepts]: Start accepts. Automaton has 12120 states and 18514 transitions. Word has length 324 [2020-10-13 14:05:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:03,494 INFO L479 AbstractCegarLoop]: Abstraction has 12120 states and 18514 transitions. [2020-10-13 14:05:03,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 12120 states and 18514 transitions. [2020-10-13 14:05:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 14:05:03,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:03,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:03,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:05:03,509 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:03,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2127271008, now seen corresponding path program 1 times [2020-10-13 14:05:03,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:03,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289837332] [2020-10-13 14:05:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:03,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:04,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:04,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:08,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:08,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 14:05:08,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:05:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:05:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:05:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 14:05:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:09,173 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:05:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:09,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:09,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:09,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:09,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:05:09,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:09,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289837332] [2020-10-13 14:05:09,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:09,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:09,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017861991] [2020-10-13 14:05:09,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:09,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:09,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:09,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:09,424 INFO L87 Difference]: Start difference. First operand 12120 states and 18514 transitions. Second operand 4 states. [2020-10-13 14:05:20,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:20,329 INFO L93 Difference]: Finished difference Result 32434 states and 48820 transitions. [2020-10-13 14:05:20,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:05:20,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-10-13 14:05:20,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:20,356 INFO L225 Difference]: With dead ends: 32434 [2020-10-13 14:05:20,356 INFO L226 Difference]: Without dead ends: 22596 [2020-10-13 14:05:20,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:20,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22596 states. [2020-10-13 14:05:21,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22596 to 22400. [2020-10-13 14:05:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22400 states. [2020-10-13 14:05:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22400 states to 22400 states and 33751 transitions. [2020-10-13 14:05:21,537 INFO L78 Accepts]: Start accepts. Automaton has 22400 states and 33751 transitions. Word has length 324 [2020-10-13 14:05:21,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:21,537 INFO L479 AbstractCegarLoop]: Abstraction has 22400 states and 33751 transitions. [2020-10-13 14:05:21,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 22400 states and 33751 transitions. [2020-10-13 14:05:21,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 14:05:21,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:21,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:21,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:05:21,562 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:21,562 INFO L82 PathProgramCache]: Analyzing trace with hash 654573569, now seen corresponding path program 1 times [2020-10-13 14:05:21,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:21,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033427710] [2020-10-13 14:05:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:21,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:22,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:22,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:26,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:26,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:26,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-13 14:05:26,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:05:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:05:26,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 14:05:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 14:05:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:27,204 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:05:27,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:27,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:27,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:05:27,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:27,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033427710] [2020-10-13 14:05:27,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:27,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:27,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856131585] [2020-10-13 14:05:27,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:27,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:27,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:27,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:27,295 INFO L87 Difference]: Start difference. First operand 22400 states and 33751 transitions. Second operand 4 states. [2020-10-13 14:05:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:34,759 INFO L93 Difference]: Finished difference Result 41907 states and 62880 transitions. [2020-10-13 14:05:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:05:34,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-13 14:05:34,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:34,788 INFO L225 Difference]: With dead ends: 41907 [2020-10-13 14:05:34,788 INFO L226 Difference]: Without dead ends: 27629 [2020-10-13 14:05:34,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:34,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27629 states. [2020-10-13 14:05:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27629 to 27447. [2020-10-13 14:05:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27447 states. [2020-10-13 14:05:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27447 states to 27447 states and 41393 transitions. [2020-10-13 14:05:36,156 INFO L78 Accepts]: Start accepts. Automaton has 27447 states and 41393 transitions. Word has length 325 [2020-10-13 14:05:36,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:36,156 INFO L479 AbstractCegarLoop]: Abstraction has 27447 states and 41393 transitions. [2020-10-13 14:05:36,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 27447 states and 41393 transitions. [2020-10-13 14:05:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 14:05:36,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:36,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:36,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:05:36,178 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:36,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:36,178 INFO L82 PathProgramCache]: Analyzing trace with hash 520202059, now seen corresponding path program 1 times [2020-10-13 14:05:36,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:36,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447014957] [2020-10-13 14:05:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:41,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:41,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-13 14:05:41,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:05:41,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:05:41,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:41,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:05:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 14:05:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:41,781 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:05:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:41,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:41,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:41,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:05:41,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:41,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447014957] [2020-10-13 14:05:41,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:41,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:41,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986210062] [2020-10-13 14:05:41,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:41,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:41,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:41,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:41,898 INFO L87 Difference]: Start difference. First operand 27447 states and 41393 transitions. Second operand 4 states. [2020-10-13 14:05:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:54,529 INFO L93 Difference]: Finished difference Result 71779 states and 107271 transitions. [2020-10-13 14:05:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:05:54,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-13 14:05:54,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:54,580 INFO L225 Difference]: With dead ends: 71779 [2020-10-13 14:05:54,580 INFO L226 Difference]: Without dead ends: 47802 [2020-10-13 14:05:54,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47802 states. [2020-10-13 14:05:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47802 to 47391. [2020-10-13 14:05:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47391 states. [2020-10-13 14:05:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47391 states to 47391 states and 70702 transitions. [2020-10-13 14:05:56,880 INFO L78 Accepts]: Start accepts. Automaton has 47391 states and 70702 transitions. Word has length 325 [2020-10-13 14:05:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:56,880 INFO L479 AbstractCegarLoop]: Abstraction has 47391 states and 70702 transitions. [2020-10-13 14:05:56,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 47391 states and 70702 transitions. [2020-10-13 14:05:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 14:05:56,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:56,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:56,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:05:56,921 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash -247673183, now seen corresponding path program 1 times [2020-10-13 14:05:56,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:56,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924583152] [2020-10-13 14:05:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:02,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:02,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 14:06:02,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:06:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 14:06:02,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:06:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:06:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 14:06:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:02,708 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:06:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:02,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:02,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:02,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:06:02,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:02,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:06:02,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924583152] [2020-10-13 14:06:02,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:02,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:06:02,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032874630] [2020-10-13 14:06:02,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:06:02,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:02,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:06:02,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:06:02,854 INFO L87 Difference]: Start difference. First operand 47391 states and 70702 transitions. Second operand 5 states. [2020-10-13 14:06:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:06:18,965 INFO L93 Difference]: Finished difference Result 138443 states and 205821 transitions. [2020-10-13 14:06:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:06:18,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 14:06:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:06:19,067 INFO L225 Difference]: With dead ends: 138443 [2020-10-13 14:06:19,067 INFO L226 Difference]: Without dead ends: 92120 [2020-10-13 14:06:19,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:06:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92120 states.