/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/loops/eureka_01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:06:43,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:06:43,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:06:43,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:06:43,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:06:43,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:06:43,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:06:43,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:06:43,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:06:43,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:06:43,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:06:43,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:06:43,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:06:43,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:06:43,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:06:43,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:06:43,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:06:43,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:06:43,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:06:43,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:06:43,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:06:43,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:06:43,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:06:43,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:06:43,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:06:43,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:06:43,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:06:43,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:06:43,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:06:43,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:06:43,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:06:43,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:06:43,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:06:43,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:06:43,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:06:43,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:06:43,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:06:43,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:06:43,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:06:43,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:06:43,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:06:43,703 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 11:06:43,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:06:43,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:06:43,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:06:43,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:06:43,730 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:06:43,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:06:43,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:06:43,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:06:43,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:06:43,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:06:43,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:06:43,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:06:43,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:06:43,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:06:43,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:06:43,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:06:43,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:06:43,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:06:43,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:06:43,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:06:43,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:06:43,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:06:43,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:06:43,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:06:43,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:06:43,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:06:43,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:06:43,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:06:43,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:06:43,734 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 11:06:44,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:06:44,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:06:44,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:06:44,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:06:44,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:06:44,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01-1.c [2020-10-13 11:06:44,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d8cf483a/6429e4d09de64831a0de4aa99dba5c5f/FLAGf59b62244 [2020-10-13 11:06:44,592 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:06:44,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/eureka_01-1.c [2020-10-13 11:06:44,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d8cf483a/6429e4d09de64831a0de4aa99dba5c5f/FLAGf59b62244 [2020-10-13 11:06:44,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d8cf483a/6429e4d09de64831a0de4aa99dba5c5f [2020-10-13 11:06:44,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:06:44,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:06:44,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:06:44,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:06:44,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:06:44,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:06:44" (1/1) ... [2020-10-13 11:06:44,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:44, skipping insertion in model container [2020-10-13 11:06:44,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:06:44" (1/1) ... [2020-10-13 11:06:44,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:06:45,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:06:45,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:06:45,225 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:06:45,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:06:45,376 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:06:45,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45 WrapperNode [2020-10-13 11:06:45,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:06:45,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:06:45,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:06:45,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:06:45,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (1/1) ... [2020-10-13 11:06:45,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (1/1) ... [2020-10-13 11:06:45,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (1/1) ... [2020-10-13 11:06:45,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (1/1) ... [2020-10-13 11:06:45,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (1/1) ... [2020-10-13 11:06:45,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (1/1) ... [2020-10-13 11:06:45,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (1/1) ... [2020-10-13 11:06:45,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:06:45,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:06:45,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:06:45,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:06:45,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (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 11:06:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:06:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:06:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 11:06:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 11:06:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:06:45,517 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 11:06:45,517 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 11:06:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:06:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 11:06:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 11:06:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:06:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 11:06:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-13 11:06:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 11:06:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 11:06:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 11:06:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:06:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:06:45,990 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:06:45,990 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-13 11:06:45,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:06:45 BoogieIcfgContainer [2020-10-13 11:06:45,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:06:46,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:06:46,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:06:46,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:06:46,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:06:44" (1/3) ... [2020-10-13 11:06:46,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678e5c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:06:46, skipping insertion in model container [2020-10-13 11:06:46,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:06:45" (2/3) ... [2020-10-13 11:06:46,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678e5c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:06:46, skipping insertion in model container [2020-10-13 11:06:46,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:06:45" (3/3) ... [2020-10-13 11:06:46,014 INFO L109 eAbstractionObserver]: Analyzing ICFG eureka_01-1.c [2020-10-13 11:06:46,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:06:46,031 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:06:46,046 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:06:46,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:06:46,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:06:46,069 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:06:46,069 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:06:46,069 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:06:46,069 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:06:46,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:06:46,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:06:46,087 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-13 11:06:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 11:06:46,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:46,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:06:46,096 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:46,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:46,102 INFO L82 PathProgramCache]: Analyzing trace with hash 900996698, now seen corresponding path program 1 times [2020-10-13 11:06:46,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:46,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168624674] [2020-10-13 11:06:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:46,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:46,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 11:06:46,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:06:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-13 11:06:46,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 11:06:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 11:06:46,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:06:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:46,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:46,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:06:46,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:06:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:06:46,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:46,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:06:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:46,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:46,789 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 11:06:46,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168624674] [2020-10-13 11:06:46,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:06:46,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 11:06:46,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083109278] [2020-10-13 11:06:46,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 11:06:46,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:06:46,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 11:06:46,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 11:06:46,815 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-13 11:06:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:06:46,940 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2020-10-13 11:06:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 11:06:46,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-13 11:06:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:06:46,951 INFO L225 Difference]: With dead ends: 65 [2020-10-13 11:06:46,951 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 11:06:46,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 11:06:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 11:06:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-13 11:06:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 11:06:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-13 11:06:46,997 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 19 [2020-10-13 11:06:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:06:46,998 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-13 11:06:46,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 11:06:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-13 11:06:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 11:06:46,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:47,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:06:47,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:06:47,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:47,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1824269934, now seen corresponding path program 1 times [2020-10-13 11:06:47,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:47,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871704129] [2020-10-13 11:06:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:47,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:47,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 11:06:47,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:06:47,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-13 11:06:47,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:06:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:06:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:06:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:06:47,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:06:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:47,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:47,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:47,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:06:47,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:06:47,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:06:47,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:47,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:06:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:06:47,620 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 11:06:47,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871704129] [2020-10-13 11:06:47,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:06:47,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:06:47,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955913245] [2020-10-13 11:06:47,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:06:47,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:06:47,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:06:47,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:06:47,627 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-13 11:06:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:06:47,886 INFO L93 Difference]: Finished difference Result 80 states and 100 transitions. [2020-10-13 11:06:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:06:47,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-13 11:06:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:06:47,890 INFO L225 Difference]: With dead ends: 80 [2020-10-13 11:06:47,891 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 11:06:47,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:06:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 11:06:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-10-13 11:06:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-13 11:06:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-13 11:06:47,911 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 19 [2020-10-13 11:06:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:06:47,911 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-13 11:06:47,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:06:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-13 11:06:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 11:06:47,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:47,913 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] [2020-10-13 11:06:47,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 11:06:47,914 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:47,914 INFO L82 PathProgramCache]: Analyzing trace with hash 754457612, now seen corresponding path program 1 times [2020-10-13 11:06:47,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:47,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591159179] [2020-10-13 11:06:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:47,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:48,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:48,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 11:06:48,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:06:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-13 11:06:48,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 11:06:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 11:06:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 11:06:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:06:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:06:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:48,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:48,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:06:48,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:06:48,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:06:48,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:06:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:06:48,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591159179] [2020-10-13 11:06:48,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:06:48,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 11:06:48,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408802017] [2020-10-13 11:06:48,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:06:48,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:06:48,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:06:48,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:06:48,938 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 14 states. [2020-10-13 11:06:49,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:06:49,873 INFO L93 Difference]: Finished difference Result 99 states and 121 transitions. [2020-10-13 11:06:49,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 11:06:49,874 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-13 11:06:49,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:06:49,877 INFO L225 Difference]: With dead ends: 99 [2020-10-13 11:06:49,877 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 11:06:49,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2020-10-13 11:06:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 11:06:49,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2020-10-13 11:06:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 11:06:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-10-13 11:06:49,892 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 25 [2020-10-13 11:06:49,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:06:49,892 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-10-13 11:06:49,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:06:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-10-13 11:06:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 11:06:49,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:49,894 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] [2020-10-13 11:06:49,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 11:06:49,894 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:49,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:49,895 INFO L82 PathProgramCache]: Analyzing trace with hash -266610742, now seen corresponding path program 1 times [2020-10-13 11:06:49,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:49,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792381988] [2020-10-13 11:06:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:50,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:50,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 11:06:50,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:06:50,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 11:06:50,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:06:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:06:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:06:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:50,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:06:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:50,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:50,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:50,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:06:50,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:06:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:06:50,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:06:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 11:06:50,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792381988] [2020-10-13 11:06:50,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:06:50,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 11:06:50,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020554878] [2020-10-13 11:06:50,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 11:06:50,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:06:50,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 11:06:50,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 11:06:50,227 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 4 states. [2020-10-13 11:06:50,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:06:50,320 INFO L93 Difference]: Finished difference Result 100 states and 123 transitions. [2020-10-13 11:06:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 11:06:50,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 11:06:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:06:50,328 INFO L225 Difference]: With dead ends: 100 [2020-10-13 11:06:50,329 INFO L226 Difference]: Without dead ends: 55 [2020-10-13 11:06:50,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 11:06:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-13 11:06:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-13 11:06:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 11:06:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-13 11:06:50,339 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 25 [2020-10-13 11:06:50,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:06:50,340 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-13 11:06:50,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 11:06:50,340 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-13 11:06:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 11:06:50,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:50,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:06:50,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 11:06:50,342 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:50,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1607975944, now seen corresponding path program 2 times [2020-10-13 11:06:50,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:50,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926757948] [2020-10-13 11:06:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:50,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:51,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:51,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 11:06:51,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:06:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-13 11:06:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:06:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:06:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:06:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:51,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:06:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:06:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:06:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:06:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:06:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:06:51,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926757948] [2020-10-13 11:06:51,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:06:51,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 11:06:51,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236194792] [2020-10-13 11:06:51,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:06:51,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:06:51,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:06:51,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:06:51,561 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 8 states. [2020-10-13 11:06:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:06:51,864 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2020-10-13 11:06:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:06:51,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-13 11:06:51,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:06:51,867 INFO L225 Difference]: With dead ends: 143 [2020-10-13 11:06:51,867 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 11:06:51,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:06:51,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 11:06:51,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 68. [2020-10-13 11:06:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 11:06:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2020-10-13 11:06:51,879 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 28 [2020-10-13 11:06:51,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:06:51,879 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2020-10-13 11:06:51,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:06:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2020-10-13 11:06:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 11:06:51,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:51,881 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] [2020-10-13 11:06:51,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 11:06:51,882 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:51,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1664371647, now seen corresponding path program 1 times [2020-10-13 11:06:51,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:51,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415446181] [2020-10-13 11:06:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:52,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 11:06:52,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:06:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-13 11:06:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:06:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 11:06:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:06:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:06:52,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:06:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:52,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 11:06:52,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415446181] [2020-10-13 11:06:52,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:06:52,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 11:06:52,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455142566] [2020-10-13 11:06:52,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:06:52,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:06:52,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:06:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:06:52,791 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 6 states. [2020-10-13 11:06:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:06:52,988 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2020-10-13 11:06:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:06:52,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-13 11:06:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:06:52,990 INFO L225 Difference]: With dead ends: 114 [2020-10-13 11:06:52,991 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 11:06:52,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:06:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 11:06:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2020-10-13 11:06:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 11:06:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2020-10-13 11:06:53,003 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 28 [2020-10-13 11:06:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:06:53,004 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2020-10-13 11:06:53,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:06:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2020-10-13 11:06:53,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 11:06:53,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:53,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:06:53,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 11:06:53,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:53,007 INFO L82 PathProgramCache]: Analyzing trace with hash -946743724, now seen corresponding path program 1 times [2020-10-13 11:06:53,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:53,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455474138] [2020-10-13 11:06:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:55,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:55,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 11:06:55,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 11:06:55,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2163 [2020-10-13 11:06:55,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:06:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:06:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:06:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:06:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:55,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:55,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:06:55,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:06:55,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:06:55,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:55,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:06:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:06:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 11:06:55,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455474138] [2020-10-13 11:06:55,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:06:55,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 11:06:55,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712760280] [2020-10-13 11:06:55,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:06:55,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:06:55,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:06:55,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:06:55,360 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand 11 states. [2020-10-13 11:06:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:06:55,972 INFO L93 Difference]: Finished difference Result 135 states and 170 transitions. [2020-10-13 11:06:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 11:06:55,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-13 11:06:55,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:06:55,974 INFO L225 Difference]: With dead ends: 135 [2020-10-13 11:06:55,974 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 11:06:55,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-13 11:06:55,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 11:06:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 81. [2020-10-13 11:06:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 11:06:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2020-10-13 11:06:55,987 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 28 [2020-10-13 11:06:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:06:55,988 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2020-10-13 11:06:55,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:06:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2020-10-13 11:06:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 11:06:55,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:55,989 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] [2020-10-13 11:06:55,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 11:06:55,990 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1770875971, now seen corresponding path program 1 times [2020-10-13 11:06:55,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:55,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317585278] [2020-10-13 11:06:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:56,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:56,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:57,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:57,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 11:06:57,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:06:57,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-10-13 11:06:57,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 11:06:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:06:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 11:06:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:06:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:58,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:06:58,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:06:58,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:06:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:06:58,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:06:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:06:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:06:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:06:58,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:06:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 11:06:58,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317585278] [2020-10-13 11:06:58,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:06:58,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 11:06:58,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733748202] [2020-10-13 11:06:58,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:06:58,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:06:58,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:06:58,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:06:58,255 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand 12 states. [2020-10-13 11:06:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:06:59,528 INFO L93 Difference]: Finished difference Result 225 states and 292 transitions. [2020-10-13 11:06:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 11:06:59,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-13 11:06:59,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:06:59,532 INFO L225 Difference]: With dead ends: 225 [2020-10-13 11:06:59,532 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 11:06:59,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-13 11:06:59,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 11:06:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 120. [2020-10-13 11:06:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 11:06:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2020-10-13 11:06:59,574 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 31 [2020-10-13 11:06:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:06:59,575 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2020-10-13 11:06:59,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:06:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2020-10-13 11:06:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 11:06:59,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:06:59,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:06:59,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 11:06:59,584 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:06:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:06:59,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1482883920, now seen corresponding path program 2 times [2020-10-13 11:06:59,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:06:59,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668707000] [2020-10-13 11:06:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:06:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:06:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:06:59,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:00,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:00,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 11:07:00,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:07:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-13 11:07:00,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 11:07:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:07:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 11:07:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:07:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:07:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:00,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:00,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:07:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:07:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:07:00,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:07:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:07:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:07:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:07:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:07:00,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668707000] [2020-10-13 11:07:00,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:07:00,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 11:07:00,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103391465] [2020-10-13 11:07:00,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 11:07:00,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:07:00,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 11:07:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-13 11:07:00,766 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand 17 states. [2020-10-13 11:07:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:07:01,889 INFO L93 Difference]: Finished difference Result 306 states and 404 transitions. [2020-10-13 11:07:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 11:07:01,889 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2020-10-13 11:07:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:07:01,891 INFO L225 Difference]: With dead ends: 306 [2020-10-13 11:07:01,892 INFO L226 Difference]: Without dead ends: 304 [2020-10-13 11:07:01,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 11:07:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-13 11:07:01,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 149. [2020-10-13 11:07:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 11:07:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2020-10-13 11:07:01,916 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 31 [2020-10-13 11:07:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:07:01,916 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2020-10-13 11:07:01,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 11:07:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2020-10-13 11:07:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 11:07:01,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:07:01,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:07:01,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 11:07:01,918 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:07:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:07:01,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1151715766, now seen corresponding path program 2 times [2020-10-13 11:07:01,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:07:01,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020547635] [2020-10-13 11:07:01,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:07:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:06,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:06,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 11:07:06,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:07:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 11:07:06,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:07:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 11:07:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:07:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:07:06,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:07:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:07,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:07,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:07:07,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:07:07,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:07:07,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:07:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:07:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:07:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:07:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 11:07:07,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020547635] [2020-10-13 11:07:07,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:07:07,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 11:07:07,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798180698] [2020-10-13 11:07:07,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:07:07,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:07:07,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:07:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:07:07,010 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand 8 states. [2020-10-13 11:07:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:07:07,317 INFO L93 Difference]: Finished difference Result 288 states and 384 transitions. [2020-10-13 11:07:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:07:07,317 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-13 11:07:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:07:07,323 INFO L225 Difference]: With dead ends: 288 [2020-10-13 11:07:07,323 INFO L226 Difference]: Without dead ends: 267 [2020-10-13 11:07:07,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:07:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-13 11:07:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 203. [2020-10-13 11:07:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-13 11:07:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 278 transitions. [2020-10-13 11:07:07,361 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 278 transitions. Word has length 34 [2020-10-13 11:07:07,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:07:07,362 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 278 transitions. [2020-10-13 11:07:07,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:07:07,362 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 278 transitions. [2020-10-13 11:07:07,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 11:07:07,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:07:07,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:07:07,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 11:07:07,365 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:07:07,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:07:07,366 INFO L82 PathProgramCache]: Analyzing trace with hash -652089132, now seen corresponding path program 3 times [2020-10-13 11:07:07,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:07:07,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126725960] [2020-10-13 11:07:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:07:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:07,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:08,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:08,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 11:07:08,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:07:08,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-10-13 11:07:08,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:07:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:07:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:07:08,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:07:08,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:07:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:08,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:07:08,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:07:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:07:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:07:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:07:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:07:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:07:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:07:08,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126725960] [2020-10-13 11:07:08,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:07:08,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 11:07:08,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464449210] [2020-10-13 11:07:08,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:07:08,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:07:08,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:07:08,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:07:08,256 INFO L87 Difference]: Start difference. First operand 203 states and 278 transitions. Second operand 10 states. [2020-10-13 11:07:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:07:08,741 INFO L93 Difference]: Finished difference Result 531 states and 732 transitions. [2020-10-13 11:07:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:07:08,741 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-13 11:07:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:07:08,747 INFO L225 Difference]: With dead ends: 531 [2020-10-13 11:07:08,747 INFO L226 Difference]: Without dead ends: 460 [2020-10-13 11:07:08,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:07:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-13 11:07:08,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 340. [2020-10-13 11:07:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 11:07:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 474 transitions. [2020-10-13 11:07:08,804 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 474 transitions. Word has length 34 [2020-10-13 11:07:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:07:08,804 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 474 transitions. [2020-10-13 11:07:08,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:07:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 474 transitions. [2020-10-13 11:07:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 11:07:08,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:07:08,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:07:08,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 11:07:08,807 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:07:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:07:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1209066122, now seen corresponding path program 4 times [2020-10-13 11:07:08,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:07:08,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527555657] [2020-10-13 11:07:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:07:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:08,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:09,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:09,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:10,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:11,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:11,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 11:07:11,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 11:07:11,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-13 11:07:11,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:11,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:07:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:07:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:07:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 11:07:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:07:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:11,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:11,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:07:11,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:07:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:07:11,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:07:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:07:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:07:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:07:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 11:07:11,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527555657] [2020-10-13 11:07:11,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:07:11,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 11:07:11,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527784821] [2020-10-13 11:07:11,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:07:11,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:07:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:07:11,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:07:11,080 INFO L87 Difference]: Start difference. First operand 340 states and 474 transitions. Second operand 6 states. [2020-10-13 11:07:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:07:11,219 INFO L93 Difference]: Finished difference Result 466 states and 635 transitions. [2020-10-13 11:07:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 11:07:11,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-13 11:07:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:07:11,221 INFO L225 Difference]: With dead ends: 466 [2020-10-13 11:07:11,221 INFO L226 Difference]: Without dead ends: 186 [2020-10-13 11:07:11,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:07:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-13 11:07:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-13 11:07:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-13 11:07:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 240 transitions. [2020-10-13 11:07:11,260 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 240 transitions. Word has length 34 [2020-10-13 11:07:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:07:11,261 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 240 transitions. [2020-10-13 11:07:11,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:07:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 240 transitions. [2020-10-13 11:07:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 11:07:11,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:07:11,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:07:11,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 11:07:11,263 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:07:11,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:07:11,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1396957432, now seen corresponding path program 5 times [2020-10-13 11:07:11,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:07:11,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490143715] [2020-10-13 11:07:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:07:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:11,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:13,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:13,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 11:07:13,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 11:07:13,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2657 [2020-10-13 11:07:13,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 11:07:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:07:13,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:07:13,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:07:14,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:07:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:14,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:14,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:14,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:07:14,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:07:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:07:14,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:07:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:07:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:07:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:07:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 11:07:14,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490143715] [2020-10-13 11:07:14,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:07:14,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 11:07:14,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463224843] [2020-10-13 11:07:14,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:07:14,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:07:14,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:07:14,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:07:14,075 INFO L87 Difference]: Start difference. First operand 186 states and 240 transitions. Second operand 13 states. [2020-10-13 11:07:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:07:14,861 INFO L93 Difference]: Finished difference Result 246 states and 308 transitions. [2020-10-13 11:07:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 11:07:14,861 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-13 11:07:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:07:14,863 INFO L225 Difference]: With dead ends: 246 [2020-10-13 11:07:14,863 INFO L226 Difference]: Without dead ends: 223 [2020-10-13 11:07:14,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2020-10-13 11:07:14,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-13 11:07:14,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 185. [2020-10-13 11:07:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-13 11:07:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 236 transitions. [2020-10-13 11:07:14,897 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 236 transitions. Word has length 34 [2020-10-13 11:07:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:07:14,897 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 236 transitions. [2020-10-13 11:07:14,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:07:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 236 transitions. [2020-10-13 11:07:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 11:07:14,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:07:14,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:07:14,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 11:07:14,901 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:07:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:07:14,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2143229676, now seen corresponding path program 3 times [2020-10-13 11:07:14,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:07:14,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850298910] [2020-10-13 11:07:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:07:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:07:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:17,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:07:18,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:07:18,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 11:07:18,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:07:18,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3259 [2020-10-13 11:07:18,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:07:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 11:07:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:07:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 11:07:18,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:07:18,248 ERROR L253 erpolLogProxyWrapper]: Interpolant 15 not inductive [2020-10-13 11:07:18,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 11:07:18,269 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-13 11:07:18,277 INFO L168 Benchmark]: Toolchain (without parser) took 33296.08 ms. Allocated memory was 146.8 MB in the beginning and 540.0 MB in the end (delta: 393.2 MB). Free memory was 103.0 MB in the beginning and 364.1 MB in the end (delta: -261.2 MB). Peak memory consumption was 412.8 MB. Max. memory is 7.1 GB. [2020-10-13 11:07:18,278 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 11:07:18,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.29 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 181.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-13 11:07:18,279 INFO L168 Benchmark]: Boogie Preprocessor took 67.21 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 178.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-13 11:07:18,279 INFO L168 Benchmark]: RCFGBuilder took 550.69 ms. Allocated memory is still 202.9 MB. Free memory was 178.2 MB in the beginning and 154.7 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-13 11:07:18,280 INFO L168 Benchmark]: TraceAbstraction took 32270.71 ms. Allocated memory was 202.9 MB in the beginning and 540.0 MB in the end (delta: 337.1 MB). Free memory was 154.7 MB in the beginning and 364.1 MB in the end (delta: -209.4 MB). Peak memory consumption was 408.5 MB. Max. memory is 7.1 GB. [2020-10-13 11:07:18,284 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 395.29 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 102.6 MB in the beginning and 181.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.21 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 178.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 550.69 ms. Allocated memory is still 202.9 MB. Free memory was 178.2 MB in the beginning and 154.7 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32270.71 ms. Allocated memory was 202.9 MB in the beginning and 540.0 MB in the end (delta: 337.1 MB). Free memory was 154.7 MB in the beginning and 364.1 MB in the end (delta: -209.4 MB). Peak memory consumption was 408.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...